fix merge conflicts for gdb_driver_pgsql

.example/database/gdb/driver/driver/driver.go

@@ -1,12 +1,7 @@
-// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
-//
-// This Source Code Form is subject to the terms of the MIT License.
-// If a copy of the MIT was not distributed with this file,
-// You can obtain one at https://github.com/gogf/gf.
-
 package driver
 
 import (
+	"context"
 	"database/sql"
 	"github.com/gogf/gf/database/gdb"
 	"github.com/gogf/gf/os/gtime"
@@ -47,9 +42,9 @@ func (d *MyDriver) New(core *gdb.Core, node *gdb.ConfigNode) (gdb.DB, error) {
 
 // DoQuery commits the sql string and its arguments to underlying driver
 // through given link object and returns the execution result.
-func (d *MyDriver) DoQuery(link gdb.Link, sql string, args ...interface{}) (rows *sql.Rows, err error) {
+func (d *MyDriver) DoQuery(ctx context.Context, link gdb.Link, sql string, args ...interface{}) (rows *sql.Rows, err error) {
 	tsMilli := gtime.TimestampMilli()
-	rows, err = d.DriverMysql.DoQuery(link, sql, args...)
+	rows, err = d.DriverMysql.DoQuery(ctx, link, sql, args...)
 	link.Exec(
 		"INSERT INTO `monitor`(`sql`,`cost`,`time`,`error`) VALUES(?,?,?,?)",
 		gdb.FormatSqlWithArgs(sql, args),
@@ -62,9 +57,9 @@ func (d *MyDriver) DoQuery(link gdb.Link, sql string, args ...interface{}) (rows
 
 // DoExec commits the query string and its arguments to underlying driver
 // through given link object and returns the execution result.
-func (d *MyDriver) DoExec(link gdb.Link, sql string, args ...interface{}) (result sql.Result, err error) {
+func (d *MyDriver) DoExec(ctx context.Context, link gdb.Link, sql string, args ...interface{}) (result sql.Result, err error) {
 	tsMilli := gtime.TimestampMilli()
-	result, err = d.DriverMysql.DoExec(link, sql, args...)
+	result, err = d.DriverMysql.DoExec(ctx, link, sql, args...)
 	link.Exec(
 		"INSERT INTO `monitor`(`sql`,`cost`,`time`,`error`) VALUES(?,?,?,?)",
 		gdb.FormatSqlWithArgs(sql, args),

.example/database/gdb/mysql/gdb_distinct.go

@@ -0,0 +1,9 @@
+package main
+
+import (
+	"github.com/gogf/gf/frame/g"
+)
+
+func main() {
+	g.DB().Model("user").Distinct().CountColumn("uid,name")
+}

.example/database/gdb/mysql/gdb_transaction.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"github.com/gogf/gf/frame/g"
+)
+
+func main() {
+	var (
+		db    = g.DB()
+		table = "user"
+	)
+	tx, err := db.Begin()
+	if err != nil {
+		panic(err)
+	}
+	if err = tx.Begin(); err != nil {
+		panic(err)
+	}
+	_, err = tx.Model(table).Data(g.Map{"id": 1, "name": "john"}).Insert()
+	if err = tx.Rollback(); err != nil {
+		panic(err)
+	}
+	_, err = tx.Model(table).Data(g.Map{"id": 2, "name": "smith"}).Insert()
+	if err = tx.Commit(); err != nil {
+		panic(err)
+	}
+}

.example/database/gdb/mysql/gdb_transaction_closure.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"github.com/gogf/gf/database/gdb"
+	"github.com/gogf/gf/frame/g"
+)
+
+func main() {
+	var (
+		err   error
+		db    = g.DB()
+		table = "user"
+	)
+	if err = db.Transaction(func(tx *gdb.TX) error {
+		// Nested transaction 1.
+		if err = tx.Transaction(func(tx *gdb.TX) error {
+			_, err = tx.Model(table).Data(g.Map{"id": 1, "name": "john"}).Insert()
+			return err
+		}); err != nil {
+			return err
+		}
+		// Nested transaction 2, panic.
+		if err = tx.Transaction(func(tx *gdb.TX) error {
+			_, err = tx.Model(table).Data(g.Map{"id": 2, "name": "smith"}).Insert()
+			// Create a panic that can make this transaction rollback automatically.
+			panic("error")
+		}); err != nil {
+			return err
+		}
+		return nil
+	}); err != nil {
+		panic(err)
+	}
+}

.example/database/gdb/mysql/gdb_transaction_savepoint.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"github.com/gogf/gf/frame/g"
+)
+
+func main() {
+	var (
+		err   error
+		db    = g.DB()
+		table = "user"
+	)
+	tx, err := db.Begin()
+	if err != nil {
+		panic(err)
+	}
+	defer func() {
+		if err := recover(); err != nil {
+			_ = tx.Rollback()
+		}
+	}()
+	if _, err = tx.Model(table).Data(g.Map{"id": 1, "name": "john"}).Insert(); err != nil {
+		panic(err)
+	}
+	if err = tx.SavePoint("MyPoint"); err != nil {
+		panic(err)
+	}
+	if _, err = tx.Model(table).Data(g.Map{"id": 2, "name": "smith"}).Insert(); err != nil {
+		panic(err)
+	}
+	if _, err = tx.Model(table).Data(g.Map{"id": 3, "name": "green"}).Insert(); err != nil {
+		panic(err)
+	}
+	if err = tx.RollbackTo("MyPoint"); err != nil {
+		panic(err)
+	}
+	if err = tx.Commit(); err != nil {
+		panic(err)
+	}
+}

.example/database/gdb/mysql/gdb_with_insert.go

@@ -0,0 +1,66 @@
+package main
+
+import (
+	"fmt"
+	"github.com/gogf/gf/database/gdb"
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/util/gmeta"
+)
+
+func main() {
+	type UserDetail struct {
+		gmeta.Meta `orm:"table:user_detail"`
+		Uid        int    `json:"uid"`
+		Address    string `json:"address"`
+	}
+
+	type UserScore struct {
+		gmeta.Meta `orm:"table:user_score"`
+		Id         int `json:"id"`
+		Uid        int `json:"uid"`
+		Score      int `json:"score"`
+	}
+
+	type User struct {
+		gmeta.Meta `orm:"table:user"`
+		Id         int          `json:"id"`
+		Name       string       `json:"name"`
+		UserDetail *UserDetail  `orm:"with:uid=id"`
+		UserScores []*UserScore `orm:"with:uid=id"`
+	}
+
+	db := g.DB()
+	db.Transaction(func(tx *gdb.TX) error {
+		for i := 1; i <= 5; i++ {
+			// User.
+			user := User{
+				Name: fmt.Sprintf(`name_%d`, i),
+			}
+			lastInsertId, err := db.Model(user).Data(user).OmitEmpty().InsertAndGetId()
+			if err != nil {
+				return err
+			}
+			// Detail.
+			userDetail := UserDetail{
+				Uid:     int(lastInsertId),
+				Address: fmt.Sprintf(`address_%d`, lastInsertId),
+			}
+			_, err = db.Model(userDetail).Data(userDetail).OmitEmpty().Insert()
+			if err != nil {
+				return err
+			}
+			// Scores.
+			for j := 1; j <= 5; j++ {
+				userScore := UserScore{
+					Uid:   int(lastInsertId),
+					Score: j,
+				}
+				_, err = db.Model(userScore).Data(userScore).OmitEmpty().Insert()
+				if err != nil {
+					return err
+				}
+			}
+		}
+		return nil
+	})
+}

.example/database/gdb/mysql/gdb_with_slect.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/util/gmeta"
+)
+
+func main() {
+	type UserDetail struct {
+		gmeta.Meta `orm:"table:user_detail"`
+		Uid        int    `json:"uid"`
+		Address    string `json:"address"`
+	}
+
+	type UserScore struct {
+		gmeta.Meta `orm:"table:user_score"`
+		Id         int `json:"id"`
+		Uid        int `json:"uid"`
+		Score      int `json:"score"`
+	}
+
+	type User struct {
+		gmeta.Meta `orm:"table:user"`
+		Id         int          `json:"id"`
+		Name       string       `json:"name"`
+		UserDetail *UserDetail  `orm:"with:uid=id"`
+		UserScores []*UserScore `orm:"with:uid=id"`
+	}
+
+	db := g.DB()
+	var user *User
+	err := db.Model(user).WithAll().Where("id", 3).Scan(&user)
+	if err != nil {
+		panic(err)
+	}
+	g.Dump(user)
+}

.example/database/gredis/gredis.go

@@ -9,10 +9,11 @@ import (
 
 // 使用原生gredis.New操作redis，但是注意需要自己调用Close方法关闭redis链接池
 func main() {
-	redis := gredis.New(gredis.Config{
+	config := &gredis.Config{
 		Host: "127.0.0.1",
 		Port: 6379,
-	})
+	}
+	redis := gredis.New(config)
 	defer redis.Close()
 	redis.Do("SET", "k", "v")
 	v, _ := redis.Do("GET", "k")

.example/i18n/gi18n/gi18n-dir.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"fmt"
 
 	"github.com/gogf/gf/i18n/gi18n"
@@ -13,6 +14,6 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
-	fmt.Println(t.Translate(`hello`))
-	fmt.Println(t.Translate(`{#hello}{#world}!`))
+	fmt.Println(t.Translate(context.TODO(), `hello`))
+	fmt.Println(t.Translate(context.TODO(), `{#hello}{#world}!`))
 }

.example/i18n/gi18n/gi18n-file.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"fmt"
 
 	"github.com/gogf/gf/i18n/gi18n"
@@ -13,6 +14,6 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
-	fmt.Println(t.Translate(`hello`))
-	fmt.Println(t.Translate(`{#hello}{#world}!`))
+	fmt.Println(t.Translate(context.TODO(), `hello`))
+	fmt.Println(t.Translate(context.TODO(), `{#hello}{#world}!`))
 }

.example/i18n/gi18n/gi18n.go

@@ -1,8 +1,10 @@
 package main
 
 import (
+	"context"
 	"fmt"
 	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/i18n/gi18n"
 )
 
 func main() {
@@ -10,6 +12,12 @@ func main() {
 		orderId     = 865271654
 		orderAmount = 99.8
 	)
-	fmt.Println(g.I18n().Tfl(`en`, `{#OrderPaid}`, orderId, orderAmount))
-	fmt.Println(g.I18n().Tfl(`zh-CN`, `{#OrderPaid}`, orderId, orderAmount))
+	fmt.Println(g.I18n().Tf(
+		gi18n.WithLanguage(context.TODO(), `en`),
+		`{#OrderPaid}`, orderId, orderAmount,
+	))
+	fmt.Println(g.I18n().Tf(
+		gi18n.WithLanguage(context.TODO(), `zh-CN`),
+		`{#OrderPaid}`, orderId, orderAmount,
+	))
 }

.example/i18n/gi18n/http_view_i18n.go

@@ -2,15 +2,19 @@ package main
 
 import (
 	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/i18n/gi18n"
 	"github.com/gogf/gf/net/ghttp"
 )
 
 func main() {
-	g.I18n().SetPath("/Users/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/.example/i18n/gi18n/i18n")
 	s := g.Server()
-	s.BindHandler("/", func(r *ghttp.Request) {
-		r.Response.WriteTplContent(`{#hello}{#world}!`, g.Map{
-			"I18nLanguage": r.Get("lang", "zh-CN"),
+	s.Group("/", func(group *ghttp.RouterGroup) {
+		group.Middleware(func(r *ghttp.Request) {
+			r.SetCtx(gi18n.WithLanguage(r.Context(), r.GetString("lang", "zh-CN")))
+			r.Middleware.Next()
+		})
+		group.ALL("/", func(r *ghttp.Request) {
+			r.Response.WriteTplContent(`{#hello}{#world}!`)
 		})
 	})
 	s.SetPort(8199)

.example/i18n/gi18n/i18n/zh-CN.toml

@@ -1 +1,3 @@
-OrderPaid = "您已成功完成订单号 #%d 支付，支付金额￥%.2f。"
+OrderPaid = "您已成功完成订单号 #%d 支付，支付金额￥%.2f。"
+hello     = "你好"
+world     = "世界"

.example/net/ghttp/client/middleware/client.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/gogf/gf/container/garray"
+	"github.com/gogf/gf/crypto/gmd5"
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/internal/json"
+	"github.com/gogf/gf/net/ghttp"
+	"github.com/gogf/gf/os/gtime"
+	"github.com/gogf/gf/util/gconv"
+	"github.com/gogf/gf/util/guid"
+	"github.com/gogf/gf/util/gutil"
+	"io/ioutil"
+	"net/http"
+)
+
+const (
+	appId     = "123"
+	appSecret = "456"
+)
+
+// 注入统一的接口签名参数
+func injectSignature(jsonContent []byte) []byte {
+	var m map[string]interface{}
+	_ = json.Unmarshal(jsonContent, &m)
+	if len(m) > 0 {
+		m["appid"] = appId
+		m["nonce"] = guid.S()
+		m["timestamp"] = gtime.Timestamp()
+		var (
+			keyArray   = garray.NewSortedStrArrayFrom(gutil.Keys(m))
+			sigContent string
+		)
+		keyArray.Iterator(func(k int, v string) bool {
+			sigContent += v
+			sigContent += gconv.String(m[v])
+			return true
+		})
+		m["signature"] = gmd5.MustEncryptString(gmd5.MustEncryptString(sigContent) + appSecret)
+		jsonContent, _ = json.Marshal(m)
+	}
+	return jsonContent
+}
+
+func main() {
+	c := g.Client()
+	c.Use(func(c *ghttp.Client, r *http.Request) (resp *ghttp.ClientResponse, err error) {
+		bodyBytes, _ := ioutil.ReadAll(r.Body)
+		if len(bodyBytes) > 0 {
+			// 注入签名相关参数，修改Request原有的提交参数
+			bodyBytes = injectSignature(bodyBytes)
+			r.Body = ioutil.NopCloser(bytes.NewBuffer(bodyBytes))
+			r.ContentLength = int64(len(bodyBytes))
+		}
+		return c.Next(r)
+	})
+	content := c.ContentJson().PostContent("http://127.0.0.1:8199/", g.Map{
+		"name": "goframe",
+		"site": "https://goframe.org",
+	})
+	fmt.Println(content)
+}

.example/net/ghttp/client/middleware/server.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/net/ghttp"
+)
+
+func main() {
+	s := g.Server()
+	s.Group("/", func(group *ghttp.RouterGroup) {
+		group.ALL("/", func(r *ghttp.Request) {
+			r.Response.Write(r.GetMap())
+		})
+	})
+	s.SetPort(8199)
+	s.Run()
+}

.example/net/ghttp/server/request/json-xml/test2.go

@@ -25,7 +25,7 @@ func main() {
 		//fmt.Println(r.GetBody())
 		if err := r.Parse(&req); err != nil {
 			// Validation error.
-			if v, ok := err.(*gvalid.Error); ok {
+			if v, ok := err.(gvalid.Error); ok {
 				r.Response.WriteJsonExit(RegisterRes{
 					Code:  1,
 					Error: v.FirstString(),

.example/net/ghttp/server/request/request_validation.go

@@ -18,13 +18,13 @@ func main() {
 	s.Group("/", func(rgroup *ghttp.RouterGroup) {
 		rgroup.ALL("/user", func(r *ghttp.Request) {
 			user := new(User)
-			if err := r.GetToStruct(user); err != nil {
+			if err := r.GetStruct(user); err != nil {
 				r.Response.WriteJsonExit(g.Map{
 					"message": err,
 					"errcode": 1,
 				})
 			}
-			if err := gvalid.CheckStruct(user, nil); err != nil {
+			if err := gvalid.CheckStruct(r.Context(), user, nil); err != nil {
 				r.Response.WriteJsonExit(g.Map{
 					"message": err.Maps(),
 					"errcode": 1,

.example/net/ghttp/server/request/validation/validation2/validation2.go

@@ -24,7 +24,7 @@ func main() {
 		var req *RegisterReq
 		if err := r.Parse(&req); err != nil {
 			// Validation error.
-			if v, ok := err.(*gvalid.Error); ok {
+			if v, ok := err.(gvalid.Error); ok {
 				r.Response.WriteJsonExit(RegisterRes{
 					Code:  1,
 					Error: v.FirstString(),

.example/net/ghttp/server/session/redis/redis_bigint.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/net/ghttp"
+	"github.com/gogf/gf/os/gsession"
+)
+
+func main() {
+	type User struct {
+		Id   int64
+		Name string
+	}
+	s := g.Server()
+	s.SetSessionStorage(gsession.NewStorageRedis(g.Redis()))
+	s.Group("/", func(group *ghttp.RouterGroup) {
+		group.GET("/set", func(r *ghttp.Request) {
+			user := &User{
+				Id:   1265476890672672808,
+				Name: "john",
+			}
+			if err := r.Session.Set("user", user); err != nil {
+				panic(err)
+			}
+			r.Response.Write("ok")
+		})
+		group.GET("/get", func(r *ghttp.Request) {
+			r.Response.WriteJson(r.Session.Get("user"))
+		})
+		group.GET("/clear", func(r *ghttp.Request) {
+			r.Session.Clear()
+		})
+	})
+	s.SetPort(8199)
+	s.Run()
+}

.example/os/gproc/signal/signal_handler.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+func signalHandlerForMQ() {
+	var (
+		sig          os.Signal
+		receivedChan = make(chan os.Signal)
+	)
+	signal.Notify(
+		receivedChan,
+		syscall.SIGINT,
+		syscall.SIGQUIT,
+		syscall.SIGKILL,
+		syscall.SIGTERM,
+		syscall.SIGABRT,
+	)
+	for {
+		sig = <-receivedChan
+		fmt.Println("MQ is shutting down due to signal:", sig.String())
+		time.Sleep(time.Second)
+		fmt.Println("MQ is shut down smoothly")
+		return
+	}
+}
+
+func main() {
+	fmt.Println("Process start, pid:", os.Getpid())
+	go signalHandlerForMQ()
+
+	var (
+		sig          os.Signal
+		receivedChan = make(chan os.Signal)
+	)
+	signal.Notify(
+		receivedChan,
+		syscall.SIGINT,
+		syscall.SIGQUIT,
+		syscall.SIGKILL,
+		syscall.SIGTERM,
+		syscall.SIGABRT,
+	)
+	for {
+		sig = <-receivedChan
+		fmt.Println("MainProcess is shutting down due to signal:", sig.String())
+		return
+	}
+}

.example/os/gproc/signal/signal_handler_gproc.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+	"github.com/gogf/gf/os/gproc"
+	"os"
+	"time"
+)
+
+func signalHandlerForMQ(sig os.Signal) {
+	fmt.Println("MQ is shutting down due to signal:", sig.String())
+	time.Sleep(time.Second)
+	fmt.Println("MQ is shut down smoothly")
+}
+
+func signalHandlerForMain(sig os.Signal) {
+	fmt.Println("MainProcess is shutting down due to signal:", sig.String())
+}
+
+func main() {
+	fmt.Println("Process start, pid:", os.Getpid())
+	gproc.AddSigHandlerShutdown(
+		signalHandlerForMQ,
+		signalHandlerForMain,
+	)
+	gproc.Listen()
+}

.example/util/gvalid/config.toml

@@ -0,0 +1,14 @@
+
+
+
+# MySQL.
+[database]
+    [database.default]
+        link   = "mysql:root:12345678@tcp(127.0.0.1:3306)/test"
+        debug  = true
+
+
+
+
+
+

.example/util/gvalid/gvalid.go

@@ -1,31 +1,32 @@
 package main
 
 import (
+	"context"
 	"github.com/gogf/gf/frame/g"
 	"github.com/gogf/gf/util/gvalid"
 )
 
 func main() {
 	//rule := "length:6,16"
-	//if m := gvalid.Check("123456", rule, nil);  m != nil {
+	//if m := gvalid.Check(context.TODO(), "123456", rule, nil);  m != nil {
 	//    fmt.Println(m)
 	//}
-	//if m := gvalid.Check("12345", rule, nil);  m != nil {
+	//if m := gvalid.Check(context.TODO(), "12345", rule, nil);  m != nil {
 	//    fmt.Println(m)
 	//    // map[length:字段长度为6到16个字符]
 	//}
 
 	//rule := "integer|between:6,16"
 	//msgs := "请输入一个整数|参数大小不对啊老铁"
-	//fmt.Println(gvalid.Check("5.66", rule, msgs))
+	//fmt.Println(gvalid.Check(context.TODO(), "5.66", rule, msgs))
 	//// map[integer:请输入一个整数 between:参数大小不对啊老铁]
 
 	//// 参数长度至少为6个数字或者6个字母，但是总长度不能超过16个字符
 	//rule := `regex:\d{6,}|\D{6,}|max-length:16`
-	//if m := gvalid.Check("123456", rule, nil);  m != nil {
+	//if m := gvalid.Check(context.TODO(), "123456", rule, nil);  m != nil {
 	//    fmt.Println(m)
 	//}
-	//if m := gvalid.Check("abcde6", rule, nil);  m != nil {
+	//if m := gvalid.Check(context.TODO(), "abcde6", rule, nil);  m != nil {
 	//    fmt.Println(m)
 	//    // map[regex:字段值不合法]
 	//}
@@ -40,18 +41,20 @@ func main() {
 	//    "password"  : "required|length:6,16|same:password2",
 	//    "password2" : "required|length:6,16",
 	//}
-	//fmt.Println(gvalid.CheckMap(params, rules))
+	//fmt.Println(gvalid.CheckMap(context.TODO(), params, rules))
 	//// map[passport:map[length:字段长度为6到16个字符] password:map[same:字段值不合法]]
 
 	params := map[string]interface{}{
 		"passport":  "john",
 		"password":  "123456",
 		"password2": "1234567",
+		"name":      "gf",
 	}
 	rules := map[string]string{
 		"passport":  "required|length:6,16",
 		"password":  "required|length:6,16|same:password2",
 		"password2": "required|length:6,16",
+		"name":      "size:5",
 	}
 	msgs := map[string]interface{}{
 		"passport": "账号不能为空|账号长度应当在:min到:max之间",
@@ -59,8 +62,9 @@ func main() {
 			"required": "密码不能为空",
 			"same":     "两次密码输入不相等",
 		},
+		"name": "名字长度必须为:size",
 	}
-	if e := gvalid.CheckMap(params, rules, msgs); e != nil {
+	if e := gvalid.CheckMap(context.TODO(), params, rules, msgs); e != nil {
 		g.Dump(e.Maps())
 	}
 	// map[passport:map[length:账号长度应当在6到16之间] password:map[same:两次密码输入不相等]]

.example/util/gvalid/gvalid_checkstructwithdata.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"context"
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/util/gconv"
+	"github.com/gogf/gf/util/gvalid"
+)
+
+func main() {
+	type User struct {
+		Name string `v:"required#请输入用户姓名"`
+		Type int    `v:"required#请选择用户类型"`
+	}
+	data := g.Map{
+		"name": "john",
+	}
+	user := User{}
+	if err := gconv.Scan(data, &user); err != nil {
+		panic(err)
+	}
+	err := gvalid.CheckStructWithData(context.TODO(), user, data, nil)
+	// 也可以使用
+	// err := g.Validator().Data(data).CheckStruct(user)
+	if err != nil {
+		g.Dump(err.Items())
+	}
+}

.example/util/gvalid/gvalid_custom_message.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"fmt"
 	"github.com/gogf/gf/frame/g"
 	"github.com/gogf/gf/util/gvalid"
@@ -8,6 +9,6 @@ import (
 
 func main() {
 	g.I18n().SetLanguage("cn")
-	err := gvalid.Check("", "required", nil)
+	err := gvalid.Check(context.TODO(), "", "required", nil)
 	fmt.Println(err.String())
 }

.example/util/gvalid/gvalid_error.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"github.com/gogf/gf/frame/g"
 	"github.com/gogf/gf/util/gvalid"
 )
@@ -17,7 +18,7 @@ func main() {
 		ConfiemPassword: "",
 	}
 
-	e := gvalid.CheckStruct(user, nil)
+	e := gvalid.CheckStruct(context.TODO(), user, nil)
 	g.Dump(e.Map())
 	g.Dump(e.Maps())
 	g.Dump(e.String())

.example/util/gvalid/gvalid_i18n.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"context"
+
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/i18n/gi18n"
+	"github.com/gogf/gf/util/gconv"
+)
+
+func main() {
+	type User struct {
+		Name    string `v:"required#ReuiredUserName"`
+		Type    int    `v:"required#ReuiredUserType"`
+		Project string `v:"size:10#MustSize"`
+	}
+	var (
+		data = g.Map{
+			"name":    "john",
+			"project": "gf",
+		}
+		user  = User{}
+		ctxEn = gi18n.WithLanguage(context.TODO(), "en")
+		ctxCh = gi18n.WithLanguage(context.TODO(), "zh-CN")
+	)
+
+	if err := gconv.Scan(data, &user); err != nil {
+		panic(err)
+	}
+	// 英文
+	if err := g.Validator().Ctx(ctxEn).Data(data).CheckStruct(user); err != nil {
+		g.Dump(err.String())
+	}
+	// 中文
+	if err := g.Validator().Ctx(ctxCh).Data(data).CheckStruct(user); err != nil {
+		g.Dump(err.String())
+	}
+}

.example/util/gvalid/gvalid_result.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"github.com/gogf/gf/frame/g"
 	"github.com/gogf/gf/util/gvalid"
 )
@@ -18,7 +19,7 @@ func main() {
 		Pass2: "123",
 	}
 
-	e := gvalid.CheckStruct(user, nil)
+	e := gvalid.CheckStruct(context.TODO(), user, nil)
 	g.Dump(e.String())
 	g.Dump(e.FirstString())
 }

.example/util/gvalid/gvalid_sequence.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"fmt"
 
 	"github.com/gogf/gf/util/gvalid"
@@ -17,7 +18,7 @@ func main() {
 		"password@required|length:6,16|same:password2#密码不能为空}|两次密码输入不相等",
 		"password2@required|length:6,16#",
 	}
-	if e := gvalid.CheckMap(params, rules); e != nil {
+	if e := gvalid.CheckMap(context.TODO(), params, rules); e != nil {
 		fmt.Println(e.Map())
 		fmt.Println(e.FirstItem())
 		fmt.Println(e.FirstString())

.example/util/gvalid/gvalid_struct1.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"github.com/gogf/gf/frame/g"
 	"github.com/gogf/gf/util/gvalid"
 )
@@ -20,7 +21,7 @@ func main() {
 	}
 
 	// 使用结构体定义的校验规则和错误提示进行校验
-	g.Dump(gvalid.CheckStruct(user, nil).Map())
+	g.Dump(gvalid.CheckStruct(context.TODO(), user, nil).Map())
 
 	// 自定义校验规则和错误提示，对定义的特定校验规则和错误提示进行覆盖
 	rules := map[string]string{
@@ -31,5 +32,5 @@ func main() {
 			"password3": "名称不能为空",
 		},
 	}
-	g.Dump(gvalid.CheckStruct(user, rules, msgs).Map())
+	g.Dump(gvalid.CheckStruct(context.TODO(), user, rules, msgs).Map())
 }

.example/util/gvalid/gvalid_struct2.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"github.com/gogf/gf/frame/g"
 	"github.com/gogf/gf/util/gvalid"
 )
@@ -13,5 +14,5 @@ func main() {
 
 	user := &User{}
 
-	g.Dump(gvalid.CheckStruct(user, nil))
+	g.Dump(gvalid.CheckStruct(context.TODO(), user, nil))
 }

.example/util/gvalid/gvalid_struct3.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"github.com/gogf/gf/frame/g"
 	"github.com/gogf/gf/util/gvalid"
 )
@@ -15,5 +16,5 @@ func main() {
 		Pass: "1",
 	}
 
-	g.Dump(gvalid.CheckStruct(user, nil).Maps())
+	g.Dump(gvalid.CheckStruct(context.TODO(), user, nil).Maps())
 }

.example/util/gvalid/gvalid_struct_meta.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"github.com/gogf/gf/errors/gerror"
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/util/gmeta"
+)
+
+type UserCreateReq struct {
+	gmeta.Meta `v:"UserCreateReq"`
+	Name       string
+	Pass       string
+}
+
+func UserCreateReqChecker(ctx context.Context, rule string, value interface{}, message string, data interface{}) error {
+	user := &UserCreateReq{}
+	if v, ok := data.(*UserCreateReq); ok {
+		user = v
+	}
+	// SELECT COUNT(*) FROM `user` WHERE `name` = xxx
+	count, err := g.Model("user").Ctx(ctx).Where("name", user.Name).Count()
+	if err != nil {
+		return err
+	}
+	if count > 0 {
+		return gerror.Newf(`The name "%s" is already token`, user.Name)
+	}
+	return nil
+}
+
+func main() {
+	user := &UserCreateReq{
+		Name: "john",
+		Pass: "123456",
+	}
+	err := g.Validator().RuleFunc("UserCreateReq", UserCreateReqChecker).CheckStruct(user)
+	fmt.Println(err)
+}

.example/util/gvalid/i18n/cn.toml

@@ -1,14 +0,0 @@
-
-
-"gf.gvalid.required" = "字段不能为空"
-
-
-
-
-
-
-
-
-
-
-

.example/util/gvalid/i18n/en.toml

@@ -0,0 +1,7 @@
+"gf.gvalid.required" = "字段不能为空"
+
+
+"ReuiredUserName" = "Please input user name"
+"ReuiredUserType" = "Please select user type"
+"MustSize"        = "Size of :attribute must be :size"
+

.example/util/gvalid/i18n/zh-CN.toml

@@ -0,0 +1,16 @@
+
+
+"gf.gvalid.required" = "字段不能为空"
+
+"ReuiredUserName" = "请输入用户名称"
+"ReuiredUserType" = "请选择用户类型"
+"MustSize"        = ":attribute长度必须为:size"
+
+
+
+
+
+
+
+
+

.gitee/ISSUE_TEMPLATE.MD

@@ -1,4 +1,7 @@
-<!-- 为更高效率地交流并解决问题，请按照以下模板提交issue，感谢！ -->
+<!-- 为高效处理您的疑问，如果觉得是BUG类问题，请您务必提供可复现该问题的最小可运行代码！ -->
+<!-- 为高效处理您的疑问，如果觉得是BUG类问题，请您务必提供可复现该问题的最小可运行代码！ -->
+<!-- 为高效处理您的疑问，如果觉得是BUG类问题，请您务必提供可复现该问题的最小可运行代码！ -->
+<!-- 重要的事情说三遍！ -->
 
 ### 1. 您当前使用的`Go`版本，及系统版本、系统架构？
 

.github/ISSUE_TEMPLATE.MD

@@ -1,5 +1,10 @@
 <!-- Please answer these questions before submitting your issue. Thanks! -->
 
+<!-- 为高效处理您的疑问，如果觉得是BUG类问题，请您务必提供可复现该问题的最小可运行代码！ -->
+<!-- 为高效处理您的疑问，如果觉得是BUG类问题，请您务必提供可复现该问题的最小可运行代码！ -->
+<!-- 为高效处理您的疑问，如果觉得是BUG类问题，请您务必提供可复现该问题的最小可运行代码！ -->
+<!-- 重要的事情说三遍！ -->
+
 ### 1. What version of `Go` and system type/arch are you using?
 
 <!-- 
@@ -13,7 +18,7 @@ What expect to see is like: `go 1.12, linux/amd64`
 <!-- You can find the GF version from your `go.mod`, or from the `version.go` in `GF` -->
 
 
-### 3. Can this issue be reproduced with the latest release?
+### 3. Can this issue be re-produced with the latest release?
 
 
 

README.MD

@@ -50,17 +50,10 @@ The `Web` component performance of `GoFrame`, please refer to third-party projec
 
 # Documentation
 
-* 中文官网: https://goframe.org
-* GoDoc API: https://godoc.org/github.com/gogf/gf
+* 中文官网: [https://goframe.org](https://goframe.org/display/gf)
+* GoDoc API: [https://pkg.go.dev/github.com/gogf/gf](https://pkg.go.dev/github.com/gogf/gf)
 
 
-# Discussion
-- QQ Group：[116707870](//shang.qq.com/wpa/qunwpa?idkey=195f91eceeb5d7fa76009b7cd5a4641f70bf4897b7f5a520635eb26ff17adfe7)
-- WX Group：Add friend`389961817` in WeChat, commenting `GF`
-- Issues：https://github.com/gogf/gf/issues
-
-> It's recommended learning `GoFrame` through its awesome source codes and API reference.
-
 # License
 
 `GF` is licensed under the [MIT License](LICENSE), 100% free and open-source, forever.

README_ZH.MD

@@ -13,14 +13,16 @@
 > 如果您初识`Go`语言，您可以将`GoFrame`类似于`PHP`中的`Laravel`, `Java`中的`SpringBoot`或者`Python`中的`Django`。
 
 # 特点
-* 模块化、松耦合设计；
-* 模块丰富、开箱即用；
-* 简便易用、易于维护；
-* 高代码质量、高单元测试覆盖率；
-* 社区活跃，大牛谦逊低调脾气好；
-* 详尽的开发文档及示例；
-* 完善的本地中文化支持；
-* 设计为团队及企业使用；
+*   模块化、松耦合
+*   模块丰富、开箱即用
+*   简洁易用、快速接入
+*   文档详尽、易于维护
+*   自顶向下、体系化设计
+*   统一框架、统一组件、降低选择成本
+*   开发规范、设计模式、代码分层模型
+*   强大便捷的开发工具链
+*   完善的本地中文化支持
+*   设计为团队及企业使用
 
 # 地址
 - **主库**：https://github.com/gogf/gf 
@@ -63,16 +65,10 @@ golang版本 >= 1.11
 
 # 文档
 
-开发文档：https://goframe.org
+官方站点：[https://goframe.org](https://goframe.org/display/gf)
 
-接口文档：https://godoc.org/github.com/gogf/gf
+接口文档：[https://pkg.go.dev/github.com/gogf/gf](https://pkg.go.dev/github.com/gogf/gf)
 
-# 帮助
-- QQ交流群：[116707870](//shang.qq.com/wpa/qunwpa?idkey=195f91eceeb5d7fa76009b7cd5a4641f70bf4897b7f5a520635eb26ff17adfe7)
-- WX交流群：微信添加`389961817`备注`GF`
-- 主库ISSUE：https://github.com/gogf/gf/issues
-
-> 建议通过阅读`GoFrame`的源码以及API文档深度学习`GoFrame`，了解更多的精妙设计。
 
 # 协议
 

container/garray/garray_normal_any.go

@@ -30,7 +30,7 @@ type Array struct {
 }
 
 // New creates and returns an empty array.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func New(safe ...bool) *Array {
 	return NewArraySize(0, 0, safe...)
@@ -42,7 +42,7 @@ func NewArray(safe ...bool) *Array {
 }
 
 // NewArraySize create and returns an array with given size and cap.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewArraySize(size int, cap int, safe ...bool) *Array {
 	return &Array{
@@ -51,8 +51,8 @@ func NewArraySize(size int, cap int, safe ...bool) *Array {
 	}
 }
 
-// NewArrayRange creates and returns a array by a range from <start> to <end>
-// with step value <step>.
+// NewArrayRange creates and returns a array by a range from `start` to `end`
+// with step value `step`.
 func NewArrayRange(start, end, step int, safe ...bool) *Array {
 	if step == 0 {
 		panic(fmt.Sprintf(`invalid step value: %d`, step))
@@ -66,18 +66,20 @@ func NewArrayRange(start, end, step int, safe ...bool) *Array {
 	return NewArrayFrom(slice, safe...)
 }
 
+// NewFrom is alias of NewArrayFrom.
 // See NewArrayFrom.
 func NewFrom(array []interface{}, safe ...bool) *Array {
 	return NewArrayFrom(array, safe...)
 }
 
+// NewFromCopy is alias of NewArrayFromCopy.
 // See NewArrayFromCopy.
 func NewFromCopy(array []interface{}, safe ...bool) *Array {
 	return NewArrayFromCopy(array, safe...)
 }
 
-// NewArrayFrom creates and returns an array with given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewArrayFrom creates and returns an array with given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewArrayFrom(array []interface{}, safe ...bool) *Array {
 	return &Array{
@@ -86,8 +88,8 @@ func NewArrayFrom(array []interface{}, safe ...bool) *Array {
 	}
 }
 
-// NewArrayFromCopy creates and returns an array from a copy of given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewArrayFromCopy creates and returns an array from a copy of given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewArrayFromCopy(array []interface{}, safe ...bool) *Array {
 	newArray := make([]interface{}, len(array))
@@ -98,8 +100,15 @@ func NewArrayFromCopy(array []interface{}, safe ...bool) *Array {
 	}
 }
 
+// At returns the value by the specified index.
+// If the given `index` is out of range of the array, it returns `nil`.
+func (a *Array) At(index int) (value interface{}) {
+	value, _ = a.Get(index)
+	return
+}
+
 // Get returns the value by the specified index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *Array) Get(index int) (value interface{}, found bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -120,7 +129,7 @@ func (a *Array) Set(index int, value interface{}) error {
 	return nil
 }
 
-// SetArray sets the underlying slice array with the given <array>.
+// SetArray sets the underlying slice array with the given `array`.
 func (a *Array) SetArray(array []interface{}) *Array {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -128,7 +137,7 @@ func (a *Array) SetArray(array []interface{}) *Array {
 	return a
 }
 
-// Replace replaces the array items by given <array> from the beginning of array.
+// Replace replaces the array items by given `array` from the beginning of array.
 func (a *Array) Replace(array []interface{}) *Array {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -152,7 +161,7 @@ func (a *Array) Sum() (sum int) {
 	return
 }
 
-// SortFunc sorts the array by custom function <less>.
+// SortFunc sorts the array by custom function `less`.
 func (a *Array) SortFunc(less func(v1, v2 interface{}) bool) *Array {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -162,7 +171,7 @@ func (a *Array) SortFunc(less func(v1, v2 interface{}) bool) *Array {
 	return a
 }
 
-// InsertBefore inserts the <value> to the front of <index>.
+// InsertBefore inserts the `value` to the front of `index`.
 func (a *Array) InsertBefore(index int, value interface{}) error {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -175,7 +184,7 @@ func (a *Array) InsertBefore(index int, value interface{}) error {
 	return nil
 }
 
-// InsertAfter inserts the <value> to the back of <index>.
+// InsertAfter inserts the `value` to the back of `index`.
 func (a *Array) InsertAfter(index int, value interface{}) error {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -189,7 +198,7 @@ func (a *Array) InsertAfter(index int, value interface{}) error {
 }
 
 // Remove removes an item by index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *Array) Remove(index int) (value interface{}, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -247,14 +256,14 @@ func (a *Array) PushRight(value ...interface{}) *Array {
 }
 
 // PopRand randomly pops and return an item out of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *Array) PopRand() (value interface{}, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
 	return a.doRemoveWithoutLock(grand.Intn(len(a.array)))
 }
 
-// PopRands randomly pops and returns <size> items out of array.
+// PopRands randomly pops and returns `size` items out of array.
 func (a *Array) PopRands(size int) []interface{} {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -272,7 +281,7 @@ func (a *Array) PopRands(size int) []interface{} {
 }
 
 // PopLeft pops and returns an item from the beginning of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *Array) PopLeft() (value interface{}, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -285,7 +294,7 @@ func (a *Array) PopLeft() (value interface{}, found bool) {
 }
 
 // PopRight pops and returns an item from the end of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *Array) PopRight() (value interface{}, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -298,7 +307,7 @@ func (a *Array) PopRight() (value interface{}, found bool) {
 	return value, true
 }
 
-// PopLefts pops and returns <size> items from the beginning of array.
+// PopLefts pops and returns `size` items from the beginning of array.
 func (a *Array) PopLefts(size int) []interface{} {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -315,7 +324,7 @@ func (a *Array) PopLefts(size int) []interface{} {
 	return value
 }
 
-// PopRights pops and returns <size> items from the end of array.
+// PopRights pops and returns `size` items from the end of array.
 func (a *Array) PopRights(size int) []interface{} {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -337,8 +346,8 @@ func (a *Array) PopRights(size int) []interface{} {
 // Notice, if in concurrent-safe usage, it returns a copy of slice;
 // else a pointer to the underlying data.
 //
-// If <end> is negative, then the offset will start from the end of array.
-// If <end> is omitted, then the sequence will have everything from start up
+// If `end` is negative, then the offset will start from the end of array.
+// If `end` is omitted, then the sequence will have everything from start up
 // until the end of the array.
 func (a *Array) Range(start int, end ...int) []interface{} {
 	a.mu.RLock()
@@ -364,7 +373,7 @@ func (a *Array) Range(start int, end ...int) []interface{} {
 }
 
 // SubSlice returns a slice of elements from the array as specified
-// by the <offset> and <size> parameters.
+// by the `offset` and `size` parameters.
 // If in concurrent safe usage, it returns a copy of the slice; else a pointer.
 //
 // If offset is non-negative, the sequence will start at that offset in the array.
@@ -471,7 +480,7 @@ func (a *Array) Contains(value interface{}) bool {
 	return a.Search(value) != -1
 }
 
-// Search searches array by <value>, returns the index of <value>,
+// Search searches array by `value`, returns the index of `value`,
 // or returns -1 if not exists.
 func (a *Array) Search(value interface{}) int {
 	a.mu.RLock()
@@ -506,7 +515,7 @@ func (a *Array) Unique() *Array {
 	return a
 }
 
-// LockFunc locks writing by callback function <f>.
+// LockFunc locks writing by callback function `f`.
 func (a *Array) LockFunc(f func(array []interface{})) *Array {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -514,7 +523,7 @@ func (a *Array) LockFunc(f func(array []interface{})) *Array {
 	return a
 }
 
-// RLockFunc locks reading by callback function <f>.
+// RLockFunc locks reading by callback function `f`.
 func (a *Array) RLockFunc(f func(array []interface{})) *Array {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -522,16 +531,16 @@ func (a *Array) RLockFunc(f func(array []interface{})) *Array {
 	return a
 }
 
-// Merge merges <array> into current array.
-// The parameter <array> can be any garray or slice type.
+// Merge merges `array` into current array.
+// The parameter `array` can be any garray or slice type.
 // The difference between Merge and Append is Append supports only specified slice type,
 // but Merge supports more parameter types.
 func (a *Array) Merge(array interface{}) *Array {
 	return a.Append(gconv.Interfaces(array)...)
 }
 
-// Fill fills an array with num entries of the value <value>,
-// keys starting at the <startIndex> parameter.
+// Fill fills an array with num entries of the value `value`,
+// keys starting at the `startIndex` parameter.
 func (a *Array) Fill(startIndex int, num int, value interface{}) error {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -549,7 +558,7 @@ func (a *Array) Fill(startIndex int, num int, value interface{}) error {
 }
 
 // Chunk splits an array into multiple arrays,
-// the size of each array is determined by <size>.
+// the size of each array is determined by `size`.
 // The last chunk may contain less than size elements.
 func (a *Array) Chunk(size int) [][]interface{} {
 	if size < 1 {
@@ -571,9 +580,9 @@ func (a *Array) Chunk(size int) [][]interface{} {
 	return n
 }
 
-// Pad pads array to the specified length with <value>.
+// Pad pads array to the specified length with `value`.
 // If size is positive then the array is padded on the right, or negative on the left.
-// If the absolute value of <size> is less than or equal to the length of the array
+// If the absolute value of `size` is less than or equal to the length of the array
 // then no padding takes place.
 func (a *Array) Pad(size int, val interface{}) *Array {
 	a.mu.Lock()
@@ -608,7 +617,7 @@ func (a *Array) Rand() (value interface{}, found bool) {
 	return a.array[grand.Intn(len(a.array))], true
 }
 
-// Rands randomly returns <size> items from array(no deleting).
+// Rands randomly returns `size` items from array(no deleting).
 func (a *Array) Rands(size int) []interface{} {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -642,7 +651,7 @@ func (a *Array) Reverse() *Array {
 	return a
 }
 
-// Join joins array elements with a string <glue>.
+// Join joins array elements with a string `glue`.
 func (a *Array) Join(glue string) string {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -675,8 +684,8 @@ func (a *Array) Iterator(f func(k int, v interface{}) bool) {
 	a.IteratorAsc(f)
 }
 
-// IteratorAsc iterates the array readonly in ascending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorAsc iterates the array readonly in ascending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *Array) IteratorAsc(f func(k int, v interface{}) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -687,8 +696,8 @@ func (a *Array) IteratorAsc(f func(k int, v interface{}) bool) {
 	}
 }
 
-// IteratorDesc iterates the array readonly in descending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorDesc iterates the array readonly in descending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *Array) IteratorDesc(f func(k int, v interface{}) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -736,7 +745,7 @@ func (a *Array) UnmarshalJSON(b []byte) error {
 	}
 	a.mu.Lock()
 	defer a.mu.Unlock()
-	if err := json.Unmarshal(b, &a.array); err != nil {
+	if err := json.UnmarshalUseNumber(b, &a.array); err != nil {
 		return err
 	}
 	return nil
@@ -748,7 +757,7 @@ func (a *Array) UnmarshalValue(value interface{}) error {
 	defer a.mu.Unlock()
 	switch value.(type) {
 	case string, []byte:
-		return json.Unmarshal(gconv.Bytes(value), &a.array)
+		return json.UnmarshalUseNumber(gconv.Bytes(value), &a.array)
 	default:
 		a.array = gconv.SliceAny(value)
 	}
@@ -784,7 +793,7 @@ func (a *Array) FilterEmpty() *Array {
 	return a
 }
 
-// Walk applies a user supplied function <f> to every item of array.
+// Walk applies a user supplied function `f` to every item of array.
 func (a *Array) Walk(f func(value interface{}) interface{}) *Array {
 	a.mu.Lock()
 	defer a.mu.Unlock()

container/garray/garray_normal_int.go

@@ -28,14 +28,14 @@ type IntArray struct {
 }
 
 // NewIntArray creates and returns an empty array.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewIntArray(safe ...bool) *IntArray {
 	return NewIntArraySize(0, 0, safe...)
 }
 
 // NewIntArraySize create and returns an array with given size and cap.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewIntArraySize(size int, cap int, safe ...bool) *IntArray {
 	return &IntArray{
@@ -44,8 +44,8 @@ func NewIntArraySize(size int, cap int, safe ...bool) *IntArray {
 	}
 }
 
-// NewIntArrayRange creates and returns a array by a range from <start> to <end>
-// with step value <step>.
+// NewIntArrayRange creates and returns a array by a range from `start` to `end`
+// with step value `step`.
 func NewIntArrayRange(start, end, step int, safe ...bool) *IntArray {
 	if step == 0 {
 		panic(fmt.Sprintf(`invalid step value: %d`, step))
@@ -59,8 +59,8 @@ func NewIntArrayRange(start, end, step int, safe ...bool) *IntArray {
 	return NewIntArrayFrom(slice, safe...)
 }
 
-// NewIntArrayFrom creates and returns an array with given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewIntArrayFrom creates and returns an array with given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewIntArrayFrom(array []int, safe ...bool) *IntArray {
 	return &IntArray{
@@ -69,8 +69,8 @@ func NewIntArrayFrom(array []int, safe ...bool) *IntArray {
 	}
 }
 
-// NewIntArrayFromCopy creates and returns an array from a copy of given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewIntArrayFromCopy creates and returns an array from a copy of given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewIntArrayFromCopy(array []int, safe ...bool) *IntArray {
 	newArray := make([]int, len(array))
@@ -81,8 +81,15 @@ func NewIntArrayFromCopy(array []int, safe ...bool) *IntArray {
 	}
 }
 
+// At returns the value by the specified index.
+// If the given `index` is out of range of the array, it returns `0`.
+func (a *IntArray) At(index int) (value int) {
+	value, _ = a.Get(index)
+	return
+}
+
 // Get returns the value by the specified index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *IntArray) Get(index int) (value int, found bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -103,7 +110,7 @@ func (a *IntArray) Set(index int, value int) error {
 	return nil
 }
 
-// SetArray sets the underlying slice array with the given <array>.
+// SetArray sets the underlying slice array with the given `array`.
 func (a *IntArray) SetArray(array []int) *IntArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -111,7 +118,7 @@ func (a *IntArray) SetArray(array []int) *IntArray {
 	return a
 }
 
-// Replace replaces the array items by given <array> from the beginning of array.
+// Replace replaces the array items by given `array` from the beginning of array.
 func (a *IntArray) Replace(array []int) *IntArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -136,7 +143,7 @@ func (a *IntArray) Sum() (sum int) {
 }
 
 // Sort sorts the array in increasing order.
-// The parameter <reverse> controls whether sort in increasing order(default) or decreasing order.
+// The parameter `reverse` controls whether sort in increasing order(default) or decreasing order.
 func (a *IntArray) Sort(reverse ...bool) *IntArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -153,7 +160,7 @@ func (a *IntArray) Sort(reverse ...bool) *IntArray {
 	return a
 }
 
-// SortFunc sorts the array by custom function <less>.
+// SortFunc sorts the array by custom function `less`.
 func (a *IntArray) SortFunc(less func(v1, v2 int) bool) *IntArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -163,7 +170,7 @@ func (a *IntArray) SortFunc(less func(v1, v2 int) bool) *IntArray {
 	return a
 }
 
-// InsertBefore inserts the <value> to the front of <index>.
+// InsertBefore inserts the `value` to the front of `index`.
 func (a *IntArray) InsertBefore(index int, value int) error {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -176,7 +183,7 @@ func (a *IntArray) InsertBefore(index int, value int) error {
 	return nil
 }
 
-// InsertAfter inserts the <value> to the back of <index>.
+// InsertAfter inserts the `value` to the back of `index`.
 func (a *IntArray) InsertAfter(index int, value int) error {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -190,7 +197,7 @@ func (a *IntArray) InsertAfter(index int, value int) error {
 }
 
 // Remove removes an item by index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *IntArray) Remove(index int) (value int, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -248,7 +255,7 @@ func (a *IntArray) PushRight(value ...int) *IntArray {
 }
 
 // PopLeft pops and returns an item from the beginning of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *IntArray) PopLeft() (value int, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -261,7 +268,7 @@ func (a *IntArray) PopLeft() (value int, found bool) {
 }
 
 // PopRight pops and returns an item from the end of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *IntArray) PopRight() (value int, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -275,16 +282,16 @@ func (a *IntArray) PopRight() (value int, found bool) {
 }
 
 // PopRand randomly pops and return an item out of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *IntArray) PopRand() (value int, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
 	return a.doRemoveWithoutLock(grand.Intn(len(a.array)))
 }
 
-// PopRands randomly pops and returns <size> items out of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopRands randomly pops and returns `size` items out of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *IntArray) PopRands(size int) []int {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -301,9 +308,9 @@ func (a *IntArray) PopRands(size int) []int {
 	return array
 }
 
-// PopLefts pops and returns <size> items from the beginning of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopLefts pops and returns `size` items from the beginning of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *IntArray) PopLefts(size int) []int {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -320,9 +327,9 @@ func (a *IntArray) PopLefts(size int) []int {
 	return value
 }
 
-// PopRights pops and returns <size> items from the end of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopRights pops and returns `size` items from the end of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *IntArray) PopRights(size int) []int {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -344,8 +351,8 @@ func (a *IntArray) PopRights(size int) []int {
 // Notice, if in concurrent-safe usage, it returns a copy of slice;
 // else a pointer to the underlying data.
 //
-// If <end> is negative, then the offset will start from the end of array.
-// If <end> is omitted, then the sequence will have everything from start up
+// If `end` is negative, then the offset will start from the end of array.
+// If `end` is omitted, then the sequence will have everything from start up
 // until the end of the array.
 func (a *IntArray) Range(start int, end ...int) []int {
 	a.mu.RLock()
@@ -371,7 +378,7 @@ func (a *IntArray) Range(start int, end ...int) []int {
 }
 
 // SubSlice returns a slice of elements from the array as specified
-// by the <offset> and <size> parameters.
+// by the `offset` and `size` parameters.
 // If in concurrent safe usage, it returns a copy of the slice; else a pointer.
 //
 // If offset is non-negative, the sequence will start at that offset in the array.
@@ -487,7 +494,7 @@ func (a *IntArray) Contains(value int) bool {
 	return a.Search(value) != -1
 }
 
-// Search searches array by <value>, returns the index of <value>,
+// Search searches array by `value`, returns the index of `value`,
 // or returns -1 if not exists.
 func (a *IntArray) Search(value int) int {
 	a.mu.RLock()
@@ -522,7 +529,7 @@ func (a *IntArray) Unique() *IntArray {
 	return a
 }
 
-// LockFunc locks writing by callback function <f>.
+// LockFunc locks writing by callback function `f`.
 func (a *IntArray) LockFunc(f func(array []int)) *IntArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -530,7 +537,7 @@ func (a *IntArray) LockFunc(f func(array []int)) *IntArray {
 	return a
 }
 
-// RLockFunc locks reading by callback function <f>.
+// RLockFunc locks reading by callback function `f`.
 func (a *IntArray) RLockFunc(f func(array []int)) *IntArray {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -538,16 +545,16 @@ func (a *IntArray) RLockFunc(f func(array []int)) *IntArray {
 	return a
 }
 
-// Merge merges <array> into current array.
-// The parameter <array> can be any garray or slice type.
+// Merge merges `array` into current array.
+// The parameter `array` can be any garray or slice type.
 // The difference between Merge and Append is Append supports only specified slice type,
 // but Merge supports more parameter types.
 func (a *IntArray) Merge(array interface{}) *IntArray {
 	return a.Append(gconv.Ints(array)...)
 }
 
-// Fill fills an array with num entries of the value <value>,
-// keys starting at the <startIndex> parameter.
+// Fill fills an array with num entries of the value `value`,
+// keys starting at the `startIndex` parameter.
 func (a *IntArray) Fill(startIndex int, num int, value int) error {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -565,7 +572,7 @@ func (a *IntArray) Fill(startIndex int, num int, value int) error {
 }
 
 // Chunk splits an array into multiple arrays,
-// the size of each array is determined by <size>.
+// the size of each array is determined by `size`.
 // The last chunk may contain less than size elements.
 func (a *IntArray) Chunk(size int) [][]int {
 	if size < 1 {
@@ -587,9 +594,9 @@ func (a *IntArray) Chunk(size int) [][]int {
 	return n
 }
 
-// Pad pads array to the specified length with <value>.
+// Pad pads array to the specified length with `value`.
 // If size is positive then the array is padded on the right, or negative on the left.
-// If the absolute value of <size> is less than or equal to the length of the array
+// If the absolute value of `size` is less than or equal to the length of the array
 // then no padding takes place.
 func (a *IntArray) Pad(size int, value int) *IntArray {
 	a.mu.Lock()
@@ -624,7 +631,7 @@ func (a *IntArray) Rand() (value int, found bool) {
 	return a.array[grand.Intn(len(a.array))], true
 }
 
-// Rands randomly returns <size> items from array(no deleting).
+// Rands randomly returns `size` items from array(no deleting).
 func (a *IntArray) Rands(size int) []int {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -658,7 +665,7 @@ func (a *IntArray) Reverse() *IntArray {
 	return a
 }
 
-// Join joins array elements with a string <glue>.
+// Join joins array elements with a string `glue`.
 func (a *IntArray) Join(glue string) string {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -691,8 +698,8 @@ func (a *IntArray) Iterator(f func(k int, v int) bool) {
 	a.IteratorAsc(f)
 }
 
-// IteratorAsc iterates the array readonly in ascending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorAsc iterates the array readonly in ascending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *IntArray) IteratorAsc(f func(k int, v int) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -703,8 +710,8 @@ func (a *IntArray) IteratorAsc(f func(k int, v int) bool) {
 	}
 }
 
-// IteratorDesc iterates the array readonly in descending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorDesc iterates the array readonly in descending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *IntArray) IteratorDesc(f func(k int, v int) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -735,7 +742,7 @@ func (a *IntArray) UnmarshalJSON(b []byte) error {
 	}
 	a.mu.Lock()
 	defer a.mu.Unlock()
-	if err := json.Unmarshal(b, &a.array); err != nil {
+	if err := json.UnmarshalUseNumber(b, &a.array); err != nil {
 		return err
 	}
 	return nil
@@ -747,7 +754,7 @@ func (a *IntArray) UnmarshalValue(value interface{}) error {
 	defer a.mu.Unlock()
 	switch value.(type) {
 	case string, []byte:
-		return json.Unmarshal(gconv.Bytes(value), &a.array)
+		return json.UnmarshalUseNumber(gconv.Bytes(value), &a.array)
 	default:
 		a.array = gconv.SliceInt(value)
 	}
@@ -768,7 +775,7 @@ func (a *IntArray) FilterEmpty() *IntArray {
 	return a
 }
 
-// Walk applies a user supplied function <f> to every item of array.
+// Walk applies a user supplied function `f` to every item of array.
 func (a *IntArray) Walk(f func(value int) int) *IntArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()

container/garray/garray_normal_str.go

@@ -30,14 +30,14 @@ type StrArray struct {
 }
 
 // NewStrArray creates and returns an empty array.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewStrArray(safe ...bool) *StrArray {
 	return NewStrArraySize(0, 0, safe...)
 }
 
 // NewStrArraySize create and returns an array with given size and cap.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewStrArraySize(size int, cap int, safe ...bool) *StrArray {
 	return &StrArray{
@@ -46,8 +46,8 @@ func NewStrArraySize(size int, cap int, safe ...bool) *StrArray {
 	}
 }
 
-// NewStrArrayFrom creates and returns an array with given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewStrArrayFrom creates and returns an array with given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewStrArrayFrom(array []string, safe ...bool) *StrArray {
 	return &StrArray{
@@ -56,8 +56,8 @@ func NewStrArrayFrom(array []string, safe ...bool) *StrArray {
 	}
 }
 
-// NewStrArrayFromCopy creates and returns an array from a copy of given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewStrArrayFromCopy creates and returns an array from a copy of given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewStrArrayFromCopy(array []string, safe ...bool) *StrArray {
 	newArray := make([]string, len(array))
@@ -68,8 +68,15 @@ func NewStrArrayFromCopy(array []string, safe ...bool) *StrArray {
 	}
 }
 
+// At returns the value by the specified index.
+// If the given `index` is out of range of the array, it returns an empty string.
+func (a *StrArray) At(index int) (value string) {
+	value, _ = a.Get(index)
+	return
+}
+
 // Get returns the value by the specified index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *StrArray) Get(index int) (value string, found bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -90,7 +97,7 @@ func (a *StrArray) Set(index int, value string) error {
 	return nil
 }
 
-// SetArray sets the underlying slice array with the given <array>.
+// SetArray sets the underlying slice array with the given `array`.
 func (a *StrArray) SetArray(array []string) *StrArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -98,7 +105,7 @@ func (a *StrArray) SetArray(array []string) *StrArray {
 	return a
 }
 
-// Replace replaces the array items by given <array> from the beginning of array.
+// Replace replaces the array items by given `array` from the beginning of array.
 func (a *StrArray) Replace(array []string) *StrArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -123,7 +130,7 @@ func (a *StrArray) Sum() (sum int) {
 }
 
 // Sort sorts the array in increasing order.
-// The parameter <reverse> controls whether sort
+// The parameter `reverse` controls whether sort
 // in increasing order(default) or decreasing order
 func (a *StrArray) Sort(reverse ...bool) *StrArray {
 	a.mu.Lock()
@@ -141,7 +148,7 @@ func (a *StrArray) Sort(reverse ...bool) *StrArray {
 	return a
 }
 
-// SortFunc sorts the array by custom function <less>.
+// SortFunc sorts the array by custom function `less`.
 func (a *StrArray) SortFunc(less func(v1, v2 string) bool) *StrArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -151,7 +158,7 @@ func (a *StrArray) SortFunc(less func(v1, v2 string) bool) *StrArray {
 	return a
 }
 
-// InsertBefore inserts the <value> to the front of <index>.
+// InsertBefore inserts the `value` to the front of `index`.
 func (a *StrArray) InsertBefore(index int, value string) error {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -164,7 +171,7 @@ func (a *StrArray) InsertBefore(index int, value string) error {
 	return nil
 }
 
-// InsertAfter inserts the <value> to the back of <index>.
+// InsertAfter inserts the `value` to the back of `index`.
 func (a *StrArray) InsertAfter(index int, value string) error {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -178,7 +185,7 @@ func (a *StrArray) InsertAfter(index int, value string) error {
 }
 
 // Remove removes an item by index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *StrArray) Remove(index int) (value string, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -236,7 +243,7 @@ func (a *StrArray) PushRight(value ...string) *StrArray {
 }
 
 // PopLeft pops and returns an item from the beginning of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *StrArray) PopLeft() (value string, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -249,7 +256,7 @@ func (a *StrArray) PopLeft() (value string, found bool) {
 }
 
 // PopRight pops and returns an item from the end of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *StrArray) PopRight() (value string, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -263,16 +270,16 @@ func (a *StrArray) PopRight() (value string, found bool) {
 }
 
 // PopRand randomly pops and return an item out of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *StrArray) PopRand() (value string, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
 	return a.doRemoveWithoutLock(grand.Intn(len(a.array)))
 }
 
-// PopRands randomly pops and returns <size> items out of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopRands randomly pops and returns `size` items out of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *StrArray) PopRands(size int) []string {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -289,9 +296,9 @@ func (a *StrArray) PopRands(size int) []string {
 	return array
 }
 
-// PopLefts pops and returns <size> items from the beginning of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopLefts pops and returns `size` items from the beginning of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *StrArray) PopLefts(size int) []string {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -308,9 +315,9 @@ func (a *StrArray) PopLefts(size int) []string {
 	return value
 }
 
-// PopRights pops and returns <size> items from the end of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopRights pops and returns `size` items from the end of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *StrArray) PopRights(size int) []string {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -332,8 +339,8 @@ func (a *StrArray) PopRights(size int) []string {
 // Notice, if in concurrent-safe usage, it returns a copy of slice;
 // else a pointer to the underlying data.
 //
-// If <end> is negative, then the offset will start from the end of array.
-// If <end> is omitted, then the sequence will have everything from start up
+// If `end` is negative, then the offset will start from the end of array.
+// If `end` is omitted, then the sequence will have everything from start up
 // until the end of the array.
 func (a *StrArray) Range(start int, end ...int) []string {
 	a.mu.RLock()
@@ -359,7 +366,7 @@ func (a *StrArray) Range(start int, end ...int) []string {
 }
 
 // SubSlice returns a slice of elements from the array as specified
-// by the <offset> and <size> parameters.
+// by the `offset` and `size` parameters.
 // If in concurrent safe usage, it returns a copy of the slice; else a pointer.
 //
 // If offset is non-negative, the sequence will start at that offset in the array.
@@ -491,7 +498,7 @@ func (a *StrArray) ContainsI(value string) bool {
 	return false
 }
 
-// Search searches array by <value>, returns the index of <value>,
+// Search searches array by `value`, returns the index of `value`,
 // or returns -1 if not exists.
 func (a *StrArray) Search(value string) int {
 	a.mu.RLock()
@@ -526,7 +533,7 @@ func (a *StrArray) Unique() *StrArray {
 	return a
 }
 
-// LockFunc locks writing by callback function <f>.
+// LockFunc locks writing by callback function `f`.
 func (a *StrArray) LockFunc(f func(array []string)) *StrArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -534,7 +541,7 @@ func (a *StrArray) LockFunc(f func(array []string)) *StrArray {
 	return a
 }
 
-// RLockFunc locks reading by callback function <f>.
+// RLockFunc locks reading by callback function `f`.
 func (a *StrArray) RLockFunc(f func(array []string)) *StrArray {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -542,16 +549,16 @@ func (a *StrArray) RLockFunc(f func(array []string)) *StrArray {
 	return a
 }
 
-// Merge merges <array> into current array.
-// The parameter <array> can be any garray or slice type.
+// Merge merges `array` into current array.
+// The parameter `array` can be any garray or slice type.
 // The difference between Merge and Append is Append supports only specified slice type,
 // but Merge supports more parameter types.
 func (a *StrArray) Merge(array interface{}) *StrArray {
 	return a.Append(gconv.Strings(array)...)
 }
 
-// Fill fills an array with num entries of the value <value>,
-// keys starting at the <startIndex> parameter.
+// Fill fills an array with num entries of the value `value`,
+// keys starting at the `startIndex` parameter.
 func (a *StrArray) Fill(startIndex int, num int, value string) error {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -569,7 +576,7 @@ func (a *StrArray) Fill(startIndex int, num int, value string) error {
 }
 
 // Chunk splits an array into multiple arrays,
-// the size of each array is determined by <size>.
+// the size of each array is determined by `size`.
 // The last chunk may contain less than size elements.
 func (a *StrArray) Chunk(size int) [][]string {
 	if size < 1 {
@@ -591,9 +598,9 @@ func (a *StrArray) Chunk(size int) [][]string {
 	return n
 }
 
-// Pad pads array to the specified length with <value>.
+// Pad pads array to the specified length with `value`.
 // If size is positive then the array is padded on the right, or negative on the left.
-// If the absolute value of <size> is less than or equal to the length of the array
+// If the absolute value of `size` is less than or equal to the length of the array
 // then no padding takes place.
 func (a *StrArray) Pad(size int, value string) *StrArray {
 	a.mu.Lock()
@@ -628,7 +635,7 @@ func (a *StrArray) Rand() (value string, found bool) {
 	return a.array[grand.Intn(len(a.array))], true
 }
 
-// Rands randomly returns <size> items from array(no deleting).
+// Rands randomly returns `size` items from array(no deleting).
 func (a *StrArray) Rands(size int) []string {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -662,7 +669,7 @@ func (a *StrArray) Reverse() *StrArray {
 	return a
 }
 
-// Join joins array elements with a string <glue>.
+// Join joins array elements with a string `glue`.
 func (a *StrArray) Join(glue string) string {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -695,8 +702,8 @@ func (a *StrArray) Iterator(f func(k int, v string) bool) {
 	a.IteratorAsc(f)
 }
 
-// IteratorAsc iterates the array readonly in ascending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorAsc iterates the array readonly in ascending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *StrArray) IteratorAsc(f func(k int, v string) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -707,8 +714,8 @@ func (a *StrArray) IteratorAsc(f func(k int, v string) bool) {
 	}
 }
 
-// IteratorDesc iterates the array readonly in descending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorDesc iterates the array readonly in descending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *StrArray) IteratorDesc(f func(k int, v string) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -750,7 +757,7 @@ func (a *StrArray) UnmarshalJSON(b []byte) error {
 	}
 	a.mu.Lock()
 	defer a.mu.Unlock()
-	if err := json.Unmarshal(b, &a.array); err != nil {
+	if err := json.UnmarshalUseNumber(b, &a.array); err != nil {
 		return err
 	}
 	return nil
@@ -762,7 +769,7 @@ func (a *StrArray) UnmarshalValue(value interface{}) error {
 	defer a.mu.Unlock()
 	switch value.(type) {
 	case string, []byte:
-		return json.Unmarshal(gconv.Bytes(value), &a.array)
+		return json.UnmarshalUseNumber(gconv.Bytes(value), &a.array)
 	default:
 		a.array = gconv.SliceStr(value)
 	}
@@ -783,7 +790,7 @@ func (a *StrArray) FilterEmpty() *StrArray {
 	return a
 }
 
-// Walk applies a user supplied function <f> to every item of array.
+// Walk applies a user supplied function `f` to every item of array.
 func (a *StrArray) Walk(f func(value string) string) *StrArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()

container/garray/garray_sorted_any.go

@@ -34,8 +34,8 @@ type SortedArray struct {
 }
 
 // NewSortedArray creates and returns an empty sorted array.
-// The parameter <safe> is used to specify whether using array in concurrent-safety, which is false in default.
-// The parameter <comparator> used to compare values to sort in array,
+// The parameter `safe` is used to specify whether using array in concurrent-safety, which is false in default.
+// The parameter `comparator` used to compare values to sort in array,
 // if it returns value < 0, means v1 < v2; the v1 will be inserted before v2;
 // if it returns value = 0, means v1 = v2; the v1 will be replaced by v2;
 // if it returns value > 0, means v1 > v2; the v1 will be inserted after v2;
@@ -44,7 +44,7 @@ func NewSortedArray(comparator func(a, b interface{}) int, safe ...bool) *Sorted
 }
 
 // NewSortedArraySize create and returns an sorted array with given size and cap.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedArraySize(cap int, comparator func(a, b interface{}) int, safe ...bool) *SortedArray {
 	return &SortedArray{
@@ -54,8 +54,8 @@ func NewSortedArraySize(cap int, comparator func(a, b interface{}) int, safe ...
 	}
 }
 
-// NewSortedArrayRange creates and returns a array by a range from <start> to <end>
-// with step value <step>.
+// NewSortedArrayRange creates and returns a array by a range from `start` to `end`
+// with step value `step`.
 func NewSortedArrayRange(start, end, step int, comparator func(a, b interface{}) int, safe ...bool) *SortedArray {
 	if step == 0 {
 		panic(fmt.Sprintf(`invalid step value: %d`, step))
@@ -69,8 +69,8 @@ func NewSortedArrayRange(start, end, step int, comparator func(a, b interface{})
 	return NewSortedArrayFrom(slice, comparator, safe...)
 }
 
-// NewSortedArrayFrom creates and returns an sorted array with given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewSortedArrayFrom creates and returns an sorted array with given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedArrayFrom(array []interface{}, comparator func(a, b interface{}) int, safe ...bool) *SortedArray {
 	a := NewSortedArraySize(0, comparator, safe...)
@@ -81,8 +81,8 @@ func NewSortedArrayFrom(array []interface{}, comparator func(a, b interface{}) i
 	return a
 }
 
-// NewSortedArrayFromCopy creates and returns an sorted array from a copy of given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewSortedArrayFromCopy creates and returns an sorted array from a copy of given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedArrayFromCopy(array []interface{}, comparator func(a, b interface{}) int, safe ...bool) *SortedArray {
 	newArray := make([]interface{}, len(array))
@@ -90,7 +90,14 @@ func NewSortedArrayFromCopy(array []interface{}, comparator func(a, b interface{
 	return NewSortedArrayFrom(newArray, comparator, safe...)
 }
 
-// SetArray sets the underlying slice array with the given <array>.
+// At returns the value by the specified index.
+// If the given `index` is out of range of the array, it returns `nil`.
+func (a *SortedArray) At(index int) (value interface{}) {
+	value, _ = a.Get(index)
+	return
+}
+
+// SetArray sets the underlying slice array with the given `array`.
 func (a *SortedArray) SetArray(array []interface{}) *SortedArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -113,7 +120,7 @@ func (a *SortedArray) SetComparator(comparator func(a, b interface{}) int) {
 }
 
 // Sort sorts the array in increasing order.
-// The parameter <reverse> controls whether sort
+// The parameter `reverse` controls whether sort
 // in increasing order(default) or decreasing order
 func (a *SortedArray) Sort() *SortedArray {
 	a.mu.Lock()
@@ -157,7 +164,7 @@ func (a *SortedArray) Append(values ...interface{}) *SortedArray {
 }
 
 // Get returns the value by the specified index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *SortedArray) Get(index int) (value interface{}, found bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -168,7 +175,7 @@ func (a *SortedArray) Get(index int) (value interface{}, found bool) {
 }
 
 // Remove removes an item by index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *SortedArray) Remove(index int) (value interface{}, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -209,7 +216,7 @@ func (a *SortedArray) RemoveValue(value interface{}) bool {
 }
 
 // PopLeft pops and returns an item from the beginning of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *SortedArray) PopLeft() (value interface{}, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -222,7 +229,7 @@ func (a *SortedArray) PopLeft() (value interface{}, found bool) {
 }
 
 // PopRight pops and returns an item from the end of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *SortedArray) PopRight() (value interface{}, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -236,14 +243,14 @@ func (a *SortedArray) PopRight() (value interface{}, found bool) {
 }
 
 // PopRand randomly pops and return an item out of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *SortedArray) PopRand() (value interface{}, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
 	return a.doRemoveWithoutLock(grand.Intn(len(a.array)))
 }
 
-// PopRands randomly pops and returns <size> items out of array.
+// PopRands randomly pops and returns `size` items out of array.
 func (a *SortedArray) PopRands(size int) []interface{} {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -260,7 +267,7 @@ func (a *SortedArray) PopRands(size int) []interface{} {
 	return array
 }
 
-// PopLefts pops and returns <size> items from the beginning of array.
+// PopLefts pops and returns `size` items from the beginning of array.
 func (a *SortedArray) PopLefts(size int) []interface{} {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -277,7 +284,7 @@ func (a *SortedArray) PopLefts(size int) []interface{} {
 	return value
 }
 
-// PopRights pops and returns <size> items from the end of array.
+// PopRights pops and returns `size` items from the end of array.
 func (a *SortedArray) PopRights(size int) []interface{} {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -299,8 +306,8 @@ func (a *SortedArray) PopRights(size int) []interface{} {
 // Notice, if in concurrent-safe usage, it returns a copy of slice;
 // else a pointer to the underlying data.
 //
-// If <end> is negative, then the offset will start from the end of array.
-// If <end> is omitted, then the sequence will have everything from start up
+// If `end` is negative, then the offset will start from the end of array.
+// If `end` is omitted, then the sequence will have everything from start up
 // until the end of the array.
 func (a *SortedArray) Range(start int, end ...int) []interface{} {
 	a.mu.RLock()
@@ -326,7 +333,7 @@ func (a *SortedArray) Range(start int, end ...int) []interface{} {
 }
 
 // SubSlice returns a slice of elements from the array as specified
-// by the <offset> and <size> parameters.
+// by the `offset` and `size` parameters.
 // If in concurrent safe usage, it returns a copy of the slice; else a pointer.
 //
 // If offset is non-negative, the sequence will start at that offset in the array.
@@ -419,7 +426,7 @@ func (a *SortedArray) Contains(value interface{}) bool {
 	return a.Search(value) != -1
 }
 
-// Search searches array by <value>, returns the index of <value>,
+// Search searches array by `value`, returns the index of `value`,
 // or returns -1 if not exists.
 func (a *SortedArray) Search(value interface{}) (index int) {
 	if i, r := a.binSearch(value, true); r == 0 {
@@ -430,9 +437,9 @@ func (a *SortedArray) Search(value interface{}) (index int) {
 
 // Binary search.
 // It returns the last compared index and the result.
-// If <result> equals to 0, it means the value at <index> is equals to <value>.
-// If <result> lesser than 0, it means the value at <index> is lesser than <value>.
-// If <result> greater than 0, it means the value at <index> is greater than <value>.
+// If `result` equals to 0, it means the value at `index` is equals to `value`.
+// If `result` lesser than 0, it means the value at `index` is lesser than `value`.
+// If `result` greater than 0, it means the value at `index` is greater than `value`.
 func (a *SortedArray) binSearch(value interface{}, lock bool) (index int, result int) {
 	if lock {
 		a.mu.RLock()
@@ -512,7 +519,7 @@ func (a *SortedArray) Clear() *SortedArray {
 	return a
 }
 
-// LockFunc locks writing by callback function <f>.
+// LockFunc locks writing by callback function `f`.
 func (a *SortedArray) LockFunc(f func(array []interface{})) *SortedArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -526,7 +533,7 @@ func (a *SortedArray) LockFunc(f func(array []interface{})) *SortedArray {
 	return a
 }
 
-// RLockFunc locks reading by callback function <f>.
+// RLockFunc locks reading by callback function `f`.
 func (a *SortedArray) RLockFunc(f func(array []interface{})) *SortedArray {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -534,8 +541,8 @@ func (a *SortedArray) RLockFunc(f func(array []interface{})) *SortedArray {
 	return a
 }
 
-// Merge merges <array> into current array.
-// The parameter <array> can be any garray or slice type.
+// Merge merges `array` into current array.
+// The parameter `array` can be any garray or slice type.
 // The difference between Merge and Append is Append supports only specified slice type,
 // but Merge supports more parameter types.
 func (a *SortedArray) Merge(array interface{}) *SortedArray {
@@ -543,7 +550,7 @@ func (a *SortedArray) Merge(array interface{}) *SortedArray {
 }
 
 // Chunk splits an array into multiple arrays,
-// the size of each array is determined by <size>.
+// the size of each array is determined by `size`.
 // The last chunk may contain less than size elements.
 func (a *SortedArray) Chunk(size int) [][]interface{} {
 	if size < 1 {
@@ -575,7 +582,7 @@ func (a *SortedArray) Rand() (value interface{}, found bool) {
 	return a.array[grand.Intn(len(a.array))], true
 }
 
-// Rands randomly returns <size> items from array(no deleting).
+// Rands randomly returns `size` items from array(no deleting).
 func (a *SortedArray) Rands(size int) []interface{} {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -589,7 +596,7 @@ func (a *SortedArray) Rands(size int) []interface{} {
 	return array
 }
 
-// Join joins array elements with a string <glue>.
+// Join joins array elements with a string `glue`.
 func (a *SortedArray) Join(glue string) string {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -622,8 +629,8 @@ func (a *SortedArray) Iterator(f func(k int, v interface{}) bool) {
 	a.IteratorAsc(f)
 }
 
-// IteratorAsc iterates the array readonly in ascending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorAsc iterates the array readonly in ascending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *SortedArray) IteratorAsc(f func(k int, v interface{}) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -634,8 +641,8 @@ func (a *SortedArray) IteratorAsc(f func(k int, v interface{}) bool) {
 	}
 }
 
-// IteratorDesc iterates the array readonly in descending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorDesc iterates the array readonly in descending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *SortedArray) IteratorDesc(f func(k int, v interface{}) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -685,7 +692,7 @@ func (a *SortedArray) UnmarshalJSON(b []byte) error {
 	}
 	a.mu.Lock()
 	defer a.mu.Unlock()
-	if err := json.Unmarshal(b, &a.array); err != nil {
+	if err := json.UnmarshalUseNumber(b, &a.array); err != nil {
 		return err
 	}
 	if a.comparator != nil && a.array != nil {
@@ -706,7 +713,7 @@ func (a *SortedArray) UnmarshalValue(value interface{}) (err error) {
 	defer a.mu.Unlock()
 	switch value.(type) {
 	case string, []byte:
-		err = json.Unmarshal(gconv.Bytes(value), &a.array)
+		err = json.UnmarshalUseNumber(gconv.Bytes(value), &a.array)
 	default:
 		a.array = gconv.SliceAny(value)
 	}
@@ -761,7 +768,7 @@ func (a *SortedArray) FilterEmpty() *SortedArray {
 	return a
 }
 
-// Walk applies a user supplied function <f> to every item of array.
+// Walk applies a user supplied function `f` to every item of array.
 func (a *SortedArray) Walk(f func(value interface{}) interface{}) *SortedArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()

container/garray/garray_sorted_int.go

@@ -31,14 +31,14 @@ type SortedIntArray struct {
 }
 
 // NewSortedIntArray creates and returns an empty sorted array.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedIntArray(safe ...bool) *SortedIntArray {
 	return NewSortedIntArraySize(0, safe...)
 }
 
 // NewSortedIntArrayComparator creates and returns an empty sorted array with specified comparator.
-// The parameter <safe> is used to specify whether using array in concurrent-safety which is false in default.
+// The parameter `safe` is used to specify whether using array in concurrent-safety which is false in default.
 func NewSortedIntArrayComparator(comparator func(a, b int) int, safe ...bool) *SortedIntArray {
 	array := NewSortedIntArray(safe...)
 	array.comparator = comparator
@@ -46,7 +46,7 @@ func NewSortedIntArrayComparator(comparator func(a, b int) int, safe ...bool) *S
 }
 
 // NewSortedIntArraySize create and returns an sorted array with given size and cap.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedIntArraySize(cap int, safe ...bool) *SortedIntArray {
 	return &SortedIntArray{
@@ -56,8 +56,8 @@ func NewSortedIntArraySize(cap int, safe ...bool) *SortedIntArray {
 	}
 }
 
-// NewSortedIntArrayRange creates and returns a array by a range from <start> to <end>
-// with step value <step>.
+// NewSortedIntArrayRange creates and returns a array by a range from `start` to `end`
+// with step value `step`.
 func NewSortedIntArrayRange(start, end, step int, safe ...bool) *SortedIntArray {
 	if step == 0 {
 		panic(fmt.Sprintf(`invalid step value: %d`, step))
@@ -71,8 +71,8 @@ func NewSortedIntArrayRange(start, end, step int, safe ...bool) *SortedIntArray
 	return NewSortedIntArrayFrom(slice, safe...)
 }
 
-// NewIntArrayFrom creates and returns an sorted array with given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewSortedIntArrayFrom creates and returns an sorted array with given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedIntArrayFrom(array []int, safe ...bool) *SortedIntArray {
 	a := NewSortedIntArraySize(0, safe...)
@@ -81,8 +81,8 @@ func NewSortedIntArrayFrom(array []int, safe ...bool) *SortedIntArray {
 	return a
 }
 
-// NewSortedIntArrayFromCopy creates and returns an sorted array from a copy of given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewSortedIntArrayFromCopy creates and returns an sorted array from a copy of given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedIntArrayFromCopy(array []int, safe ...bool) *SortedIntArray {
 	newArray := make([]int, len(array))
@@ -90,7 +90,14 @@ func NewSortedIntArrayFromCopy(array []int, safe ...bool) *SortedIntArray {
 	return NewSortedIntArrayFrom(newArray, safe...)
 }
 
-// SetArray sets the underlying slice array with the given <array>.
+// At returns the value by the specified index.
+// If the given `index` is out of range of the array, it returns `0`.
+func (a *SortedIntArray) At(index int) (value int) {
+	value, _ = a.Get(index)
+	return
+}
+
+// SetArray sets the underlying slice array with the given `array`.
 func (a *SortedIntArray) SetArray(array []int) *SortedIntArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -100,7 +107,7 @@ func (a *SortedIntArray) SetArray(array []int) *SortedIntArray {
 }
 
 // Sort sorts the array in increasing order.
-// The parameter <reverse> controls whether sort
+// The parameter `reverse` controls whether sort
 // in increasing order(default) or decreasing order.
 func (a *SortedIntArray) Sort() *SortedIntArray {
 	a.mu.Lock()
@@ -142,7 +149,7 @@ func (a *SortedIntArray) Append(values ...int) *SortedIntArray {
 }
 
 // Get returns the value by the specified index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *SortedIntArray) Get(index int) (value int, found bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -153,7 +160,7 @@ func (a *SortedIntArray) Get(index int) (value int, found bool) {
 }
 
 // Remove removes an item by index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *SortedIntArray) Remove(index int) (value int, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -194,7 +201,7 @@ func (a *SortedIntArray) RemoveValue(value int) bool {
 }
 
 // PopLeft pops and returns an item from the beginning of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *SortedIntArray) PopLeft() (value int, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -207,7 +214,7 @@ func (a *SortedIntArray) PopLeft() (value int, found bool) {
 }
 
 // PopRight pops and returns an item from the end of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *SortedIntArray) PopRight() (value int, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -221,16 +228,16 @@ func (a *SortedIntArray) PopRight() (value int, found bool) {
 }
 
 // PopRand randomly pops and return an item out of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *SortedIntArray) PopRand() (value int, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
 	return a.doRemoveWithoutLock(grand.Intn(len(a.array)))
 }
 
-// PopRands randomly pops and returns <size> items out of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopRands randomly pops and returns `size` items out of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *SortedIntArray) PopRands(size int) []int {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -247,9 +254,9 @@ func (a *SortedIntArray) PopRands(size int) []int {
 	return array
 }
 
-// PopLefts pops and returns <size> items from the beginning of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopLefts pops and returns `size` items from the beginning of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *SortedIntArray) PopLefts(size int) []int {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -266,9 +273,9 @@ func (a *SortedIntArray) PopLefts(size int) []int {
 	return value
 }
 
-// PopRights pops and returns <size> items from the end of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopRights pops and returns `size` items from the end of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *SortedIntArray) PopRights(size int) []int {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -290,8 +297,8 @@ func (a *SortedIntArray) PopRights(size int) []int {
 // Notice, if in concurrent-safe usage, it returns a copy of slice;
 // else a pointer to the underlying data.
 //
-// If <end> is negative, then the offset will start from the end of array.
-// If <end> is omitted, then the sequence will have everything from start up
+// If `end` is negative, then the offset will start from the end of array.
+// If `end` is omitted, then the sequence will have everything from start up
 // until the end of the array.
 func (a *SortedIntArray) Range(start int, end ...int) []int {
 	a.mu.RLock()
@@ -317,7 +324,7 @@ func (a *SortedIntArray) Range(start int, end ...int) []int {
 }
 
 // SubSlice returns a slice of elements from the array as specified
-// by the <offset> and <size> parameters.
+// by the `offset` and `size` parameters.
 // If in concurrent safe usage, it returns a copy of the slice; else a pointer.
 //
 // If offset is non-negative, the sequence will start at that offset in the array.
@@ -416,7 +423,7 @@ func (a *SortedIntArray) Contains(value int) bool {
 	return a.Search(value) != -1
 }
 
-// Search searches array by <value>, returns the index of <value>,
+// Search searches array by `value`, returns the index of `value`,
 // or returns -1 if not exists.
 func (a *SortedIntArray) Search(value int) (index int) {
 	if i, r := a.binSearch(value, true); r == 0 {
@@ -427,9 +434,9 @@ func (a *SortedIntArray) Search(value int) (index int) {
 
 // Binary search.
 // It returns the last compared index and the result.
-// If <result> equals to 0, it means the value at <index> is equals to <value>.
-// If <result> lesser than 0, it means the value at <index> is lesser than <value>.
-// If <result> greater than 0, it means the value at <index> is greater than <value>.
+// If `result` equals to 0, it means the value at `index` is equals to `value`.
+// If `result` lesser than 0, it means the value at `index` is lesser than `value`.
+// If `result` greater than 0, it means the value at `index` is greater than `value`.
 func (a *SortedIntArray) binSearch(value int, lock bool) (index int, result int) {
 	if lock {
 		a.mu.RLock()
@@ -509,7 +516,7 @@ func (a *SortedIntArray) Clear() *SortedIntArray {
 	return a
 }
 
-// LockFunc locks writing by callback function <f>.
+// LockFunc locks writing by callback function `f`.
 func (a *SortedIntArray) LockFunc(f func(array []int)) *SortedIntArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -517,7 +524,7 @@ func (a *SortedIntArray) LockFunc(f func(array []int)) *SortedIntArray {
 	return a
 }
 
-// RLockFunc locks reading by callback function <f>.
+// RLockFunc locks reading by callback function `f`.
 func (a *SortedIntArray) RLockFunc(f func(array []int)) *SortedIntArray {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -525,8 +532,8 @@ func (a *SortedIntArray) RLockFunc(f func(array []int)) *SortedIntArray {
 	return a
 }
 
-// Merge merges <array> into current array.
-// The parameter <array> can be any garray or slice type.
+// Merge merges `array` into current array.
+// The parameter `array` can be any garray or slice type.
 // The difference between Merge and Append is Append supports only specified slice type,
 // but Merge supports more parameter types.
 func (a *SortedIntArray) Merge(array interface{}) *SortedIntArray {
@@ -534,7 +541,7 @@ func (a *SortedIntArray) Merge(array interface{}) *SortedIntArray {
 }
 
 // Chunk splits an array into multiple arrays,
-// the size of each array is determined by <size>.
+// the size of each array is determined by `size`.
 // The last chunk may contain less than size elements.
 func (a *SortedIntArray) Chunk(size int) [][]int {
 	if size < 1 {
@@ -566,7 +573,7 @@ func (a *SortedIntArray) Rand() (value int, found bool) {
 	return a.array[grand.Intn(len(a.array))], true
 }
 
-// Rands randomly returns <size> items from array(no deleting).
+// Rands randomly returns `size` items from array(no deleting).
 func (a *SortedIntArray) Rands(size int) []int {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -580,7 +587,7 @@ func (a *SortedIntArray) Rands(size int) []int {
 	return array
 }
 
-// Join joins array elements with a string <glue>.
+// Join joins array elements with a string `glue`.
 func (a *SortedIntArray) Join(glue string) string {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -613,8 +620,8 @@ func (a *SortedIntArray) Iterator(f func(k int, v int) bool) {
 	a.IteratorAsc(f)
 }
 
-// IteratorAsc iterates the array readonly in ascending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorAsc iterates the array readonly in ascending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *SortedIntArray) IteratorAsc(f func(k int, v int) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -625,8 +632,8 @@ func (a *SortedIntArray) IteratorAsc(f func(k int, v int) bool) {
 	}
 }
 
-// IteratorDesc iterates the array readonly in descending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorDesc iterates the array readonly in descending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *SortedIntArray) IteratorDesc(f func(k int, v int) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -658,7 +665,7 @@ func (a *SortedIntArray) UnmarshalJSON(b []byte) error {
 	}
 	a.mu.Lock()
 	defer a.mu.Unlock()
-	if err := json.Unmarshal(b, &a.array); err != nil {
+	if err := json.UnmarshalUseNumber(b, &a.array); err != nil {
 		return err
 	}
 	if a.array != nil {
@@ -676,7 +683,7 @@ func (a *SortedIntArray) UnmarshalValue(value interface{}) (err error) {
 	defer a.mu.Unlock()
 	switch value.(type) {
 	case string, []byte:
-		err = json.Unmarshal(gconv.Bytes(value), &a.array)
+		err = json.UnmarshalUseNumber(gconv.Bytes(value), &a.array)
 	default:
 		a.array = gconv.SliceInt(value)
 	}
@@ -707,7 +714,7 @@ func (a *SortedIntArray) FilterEmpty() *SortedIntArray {
 	return a
 }
 
-// Walk applies a user supplied function <f> to every item of array.
+// Walk applies a user supplied function `f` to every item of array.
 func (a *SortedIntArray) Walk(f func(value int) int) *SortedIntArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()

container/garray/garray_sorted_str.go

@@ -32,14 +32,14 @@ type SortedStrArray struct {
 }
 
 // NewSortedStrArray creates and returns an empty sorted array.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedStrArray(safe ...bool) *SortedStrArray {
 	return NewSortedStrArraySize(0, safe...)
 }
 
 // NewSortedStrArrayComparator creates and returns an empty sorted array with specified comparator.
-// The parameter <safe> is used to specify whether using array in concurrent-safety which is false in default.
+// The parameter `safe` is used to specify whether using array in concurrent-safety which is false in default.
 func NewSortedStrArrayComparator(comparator func(a, b string) int, safe ...bool) *SortedStrArray {
 	array := NewSortedStrArray(safe...)
 	array.comparator = comparator
@@ -47,7 +47,7 @@ func NewSortedStrArrayComparator(comparator func(a, b string) int, safe ...bool)
 }
 
 // NewSortedStrArraySize create and returns an sorted array with given size and cap.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedStrArraySize(cap int, safe ...bool) *SortedStrArray {
 	return &SortedStrArray{
@@ -57,8 +57,8 @@ func NewSortedStrArraySize(cap int, safe ...bool) *SortedStrArray {
 	}
 }
 
-// NewSortedStrArrayFrom creates and returns an sorted array with given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewSortedStrArrayFrom creates and returns an sorted array with given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedStrArrayFrom(array []string, safe ...bool) *SortedStrArray {
 	a := NewSortedStrArraySize(0, safe...)
@@ -67,8 +67,8 @@ func NewSortedStrArrayFrom(array []string, safe ...bool) *SortedStrArray {
 	return a
 }
 
-// NewSortedStrArrayFromCopy creates and returns an sorted array from a copy of given slice <array>.
-// The parameter <safe> is used to specify whether using array in concurrent-safety,
+// NewSortedStrArrayFromCopy creates and returns an sorted array from a copy of given slice `array`.
+// The parameter `safe` is used to specify whether using array in concurrent-safety,
 // which is false in default.
 func NewSortedStrArrayFromCopy(array []string, safe ...bool) *SortedStrArray {
 	newArray := make([]string, len(array))
@@ -76,7 +76,7 @@ func NewSortedStrArrayFromCopy(array []string, safe ...bool) *SortedStrArray {
 	return NewSortedStrArrayFrom(newArray, safe...)
 }
 
-// SetArray sets the underlying slice array with the given <array>.
+// SetArray sets the underlying slice array with the given `array`.
 func (a *SortedStrArray) SetArray(array []string) *SortedStrArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -85,8 +85,15 @@ func (a *SortedStrArray) SetArray(array []string) *SortedStrArray {
 	return a
 }
 
+// At returns the value by the specified index.
+// If the given `index` is out of range of the array, it returns an empty string.
+func (a *SortedStrArray) At(index int) (value string) {
+	value, _ = a.Get(index)
+	return
+}
+
 // Sort sorts the array in increasing order.
-// The parameter <reverse> controls whether sort
+// The parameter `reverse` controls whether sort
 // in increasing order(default) or decreasing order.
 func (a *SortedStrArray) Sort() *SortedStrArray {
 	a.mu.Lock()
@@ -128,7 +135,7 @@ func (a *SortedStrArray) Append(values ...string) *SortedStrArray {
 }
 
 // Get returns the value by the specified index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *SortedStrArray) Get(index int) (value string, found bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -139,7 +146,7 @@ func (a *SortedStrArray) Get(index int) (value string, found bool) {
 }
 
 // Remove removes an item by index.
-// If the given <index> is out of range of the array, the <found> is false.
+// If the given `index` is out of range of the array, the `found` is false.
 func (a *SortedStrArray) Remove(index int) (value string, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -180,7 +187,7 @@ func (a *SortedStrArray) RemoveValue(value string) bool {
 }
 
 // PopLeft pops and returns an item from the beginning of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *SortedStrArray) PopLeft() (value string, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -193,7 +200,7 @@ func (a *SortedStrArray) PopLeft() (value string, found bool) {
 }
 
 // PopRight pops and returns an item from the end of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *SortedStrArray) PopRight() (value string, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -207,16 +214,16 @@ func (a *SortedStrArray) PopRight() (value string, found bool) {
 }
 
 // PopRand randomly pops and return an item out of array.
-// Note that if the array is empty, the <found> is false.
+// Note that if the array is empty, the `found` is false.
 func (a *SortedStrArray) PopRand() (value string, found bool) {
 	a.mu.Lock()
 	defer a.mu.Unlock()
 	return a.doRemoveWithoutLock(grand.Intn(len(a.array)))
 }
 
-// PopRands randomly pops and returns <size> items out of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopRands randomly pops and returns `size` items out of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *SortedStrArray) PopRands(size int) []string {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -233,9 +240,9 @@ func (a *SortedStrArray) PopRands(size int) []string {
 	return array
 }
 
-// PopLefts pops and returns <size> items from the beginning of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopLefts pops and returns `size` items from the beginning of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *SortedStrArray) PopLefts(size int) []string {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -252,9 +259,9 @@ func (a *SortedStrArray) PopLefts(size int) []string {
 	return value
 }
 
-// PopRights pops and returns <size> items from the end of array.
-// If the given <size> is greater than size of the array, it returns all elements of the array.
-// Note that if given <size> <= 0 or the array is empty, it returns nil.
+// PopRights pops and returns `size` items from the end of array.
+// If the given `size` is greater than size of the array, it returns all elements of the array.
+// Note that if given `size` <= 0 or the array is empty, it returns nil.
 func (a *SortedStrArray) PopRights(size int) []string {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -276,8 +283,8 @@ func (a *SortedStrArray) PopRights(size int) []string {
 // Notice, if in concurrent-safe usage, it returns a copy of slice;
 // else a pointer to the underlying data.
 //
-// If <end> is negative, then the offset will start from the end of array.
-// If <end> is omitted, then the sequence will have everything from start up
+// If `end` is negative, then the offset will start from the end of array.
+// If `end` is omitted, then the sequence will have everything from start up
 // until the end of the array.
 func (a *SortedStrArray) Range(start int, end ...int) []string {
 	a.mu.RLock()
@@ -303,7 +310,7 @@ func (a *SortedStrArray) Range(start int, end ...int) []string {
 }
 
 // SubSlice returns a slice of elements from the array as specified
-// by the <offset> and <size> parameters.
+// by the `offset` and `size` parameters.
 // If in concurrent safe usage, it returns a copy of the slice; else a pointer.
 //
 // If offset is non-negative, the sequence will start at that offset in the array.
@@ -418,7 +425,7 @@ func (a *SortedStrArray) ContainsI(value string) bool {
 	return false
 }
 
-// Search searches array by <value>, returns the index of <value>,
+// Search searches array by `value`, returns the index of `value`,
 // or returns -1 if not exists.
 func (a *SortedStrArray) Search(value string) (index int) {
 	if i, r := a.binSearch(value, true); r == 0 {
@@ -429,9 +436,9 @@ func (a *SortedStrArray) Search(value string) (index int) {
 
 // Binary search.
 // It returns the last compared index and the result.
-// If <result> equals to 0, it means the value at <index> is equals to <value>.
-// If <result> lesser than 0, it means the value at <index> is lesser than <value>.
-// If <result> greater than 0, it means the value at <index> is greater than <value>.
+// If `result` equals to 0, it means the value at `index` is equals to `value`.
+// If `result` lesser than 0, it means the value at `index` is lesser than `value`.
+// If `result` greater than 0, it means the value at `index` is greater than `value`.
 func (a *SortedStrArray) binSearch(value string, lock bool) (index int, result int) {
 	if lock {
 		a.mu.RLock()
@@ -511,7 +518,7 @@ func (a *SortedStrArray) Clear() *SortedStrArray {
 	return a
 }
 
-// LockFunc locks writing by callback function <f>.
+// LockFunc locks writing by callback function `f`.
 func (a *SortedStrArray) LockFunc(f func(array []string)) *SortedStrArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()
@@ -519,7 +526,7 @@ func (a *SortedStrArray) LockFunc(f func(array []string)) *SortedStrArray {
 	return a
 }
 
-// RLockFunc locks reading by callback function <f>.
+// RLockFunc locks reading by callback function `f`.
 func (a *SortedStrArray) RLockFunc(f func(array []string)) *SortedStrArray {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -527,8 +534,8 @@ func (a *SortedStrArray) RLockFunc(f func(array []string)) *SortedStrArray {
 	return a
 }
 
-// Merge merges <array> into current array.
-// The parameter <array> can be any garray or slice type.
+// Merge merges `array` into current array.
+// The parameter `array` can be any garray or slice type.
 // The difference between Merge and Append is Append supports only specified slice type,
 // but Merge supports more parameter types.
 func (a *SortedStrArray) Merge(array interface{}) *SortedStrArray {
@@ -536,7 +543,7 @@ func (a *SortedStrArray) Merge(array interface{}) *SortedStrArray {
 }
 
 // Chunk splits an array into multiple arrays,
-// the size of each array is determined by <size>.
+// the size of each array is determined by `size`.
 // The last chunk may contain less than size elements.
 func (a *SortedStrArray) Chunk(size int) [][]string {
 	if size < 1 {
@@ -568,7 +575,7 @@ func (a *SortedStrArray) Rand() (value string, found bool) {
 	return a.array[grand.Intn(len(a.array))], true
 }
 
-// Rands randomly returns <size> items from array(no deleting).
+// Rands randomly returns `size` items from array(no deleting).
 func (a *SortedStrArray) Rands(size int) []string {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -582,7 +589,7 @@ func (a *SortedStrArray) Rands(size int) []string {
 	return array
 }
 
-// Join joins array elements with a string <glue>.
+// Join joins array elements with a string `glue`.
 func (a *SortedStrArray) Join(glue string) string {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -615,8 +622,8 @@ func (a *SortedStrArray) Iterator(f func(k int, v string) bool) {
 	a.IteratorAsc(f)
 }
 
-// IteratorAsc iterates the array readonly in ascending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorAsc iterates the array readonly in ascending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *SortedStrArray) IteratorAsc(f func(k int, v string) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -627,8 +634,8 @@ func (a *SortedStrArray) IteratorAsc(f func(k int, v string) bool) {
 	}
 }
 
-// IteratorDesc iterates the array readonly in descending order with given callback function <f>.
-// If <f> returns true, then it continues iterating; or false to stop.
+// IteratorDesc iterates the array readonly in descending order with given callback function `f`.
+// If `f` returns true, then it continues iterating; or false to stop.
 func (a *SortedStrArray) IteratorDesc(f func(k int, v string) bool) {
 	a.mu.RLock()
 	defer a.mu.RUnlock()
@@ -671,7 +678,7 @@ func (a *SortedStrArray) UnmarshalJSON(b []byte) error {
 	}
 	a.mu.Lock()
 	defer a.mu.Unlock()
-	if err := json.Unmarshal(b, &a.array); err != nil {
+	if err := json.UnmarshalUseNumber(b, &a.array); err != nil {
 		return err
 	}
 	if a.array != nil {
@@ -689,7 +696,7 @@ func (a *SortedStrArray) UnmarshalValue(value interface{}) (err error) {
 	defer a.mu.Unlock()
 	switch value.(type) {
 	case string, []byte:
-		err = json.Unmarshal(gconv.Bytes(value), &a.array)
+		err = json.UnmarshalUseNumber(gconv.Bytes(value), &a.array)
 	default:
 		a.array = gconv.SliceStr(value)
 	}
@@ -720,7 +727,7 @@ func (a *SortedStrArray) FilterEmpty() *SortedStrArray {
 	return a
 }
 
-// Walk applies a user supplied function <f> to every item of array.
+// Walk applies a user supplied function `f` to every item of array.
 func (a *SortedStrArray) Walk(f func(value string) string) *SortedStrArray {
 	a.mu.Lock()
 	defer a.mu.Unlock()

container/garray/garray_z_example_any_test.go

@@ -75,14 +75,14 @@ func ExampleNew() {
 func ExampleArray_Iterator() {
 	array := garray.NewArrayFrom(g.Slice{"a", "b", "c"})
 	// Iterator is alias of IteratorAsc, which iterates the array readonly in ascending order
-	//  with given callback function <f>.
-	// If <f> returns true, then it continues iterating; or false to stop.
+	//  with given callback function `f`.
+	// If `f` returns true, then it continues iterating; or false to stop.
 	array.Iterator(func(k int, v interface{}) bool {
 		fmt.Println(k, v)
 		return true
 	})
-	// IteratorDesc iterates the array readonly in descending order with given callback function <f>.
-	// If <f> returns true, then it continues iterating; or false to stop.
+	// IteratorDesc iterates the array readonly in descending order with given callback function `f`.
+	// If `f` returns true, then it continues iterating; or false to stop.
 	array.IteratorDesc(func(k int, v interface{}) bool {
 		fmt.Println(k, v)
 		return true
@@ -150,7 +150,7 @@ func ExampleArray_Chunk() {
 	array := garray.NewFrom(g.Slice{1, 2, 3, 4, 5, 6, 7, 8, 9})
 
 	// Chunk splits an array into multiple arrays,
-	// the size of each array is determined by <size>.
+	// the size of each array is determined by `size`.
 	// The last chunk may contain less than size elements.
 	fmt.Println(array.Chunk(2))
 

container/garray/garray_z_unit_normal_any_array_test.go

@@ -570,12 +570,12 @@ func TestArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.New()
-		err2 = json.Unmarshal(b2, &a2)
+		err2 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(err2, nil)
 		t.Assert(a2.Slice(), s1)
 
 		var a3 garray.Array
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 	})
@@ -589,12 +589,12 @@ func TestArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.New()
-		err2 = json.Unmarshal(b2, &a2)
+		err2 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(err2, nil)
 		t.Assert(a2.Slice(), s1)
 
 		var a3 garray.Array
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 	})
@@ -612,7 +612,7 @@ func TestArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.Assert(user.Scores, data["Scores"])
@@ -631,7 +631,7 @@ func TestArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.Assert(user.Scores, data["Scores"])

container/garray/garray_z_unit_normal_int_array_test.go

@@ -615,11 +615,11 @@ func TestIntArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.NewIntArray()
-		err1 = json.Unmarshal(b2, &a2)
+		err1 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(a2.Slice(), s1)
 
 		var a3 garray.IntArray
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 	})
@@ -633,11 +633,11 @@ func TestIntArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.NewIntArray()
-		err1 = json.Unmarshal(b2, &a2)
+		err1 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(a2.Slice(), s1)
 
 		var a3 garray.IntArray
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 	})
@@ -655,7 +655,7 @@ func TestIntArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.Assert(user.Scores, data["Scores"])
@@ -674,7 +674,7 @@ func TestIntArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.Assert(user.Scores, data["Scores"])

container/garray/garray_z_unit_normal_str_array_test.go

@@ -614,11 +614,11 @@ func TestStrArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.NewStrArray()
-		err1 = json.Unmarshal(b2, &a2)
+		err1 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(a2.Slice(), s1)
 
 		var a3 garray.StrArray
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 	})
@@ -632,11 +632,11 @@ func TestStrArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.NewStrArray()
-		err1 = json.Unmarshal(b2, &a2)
+		err1 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(a2.Slice(), s1)
 
 		var a3 garray.StrArray
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 	})
@@ -654,7 +654,7 @@ func TestStrArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.Assert(user.Scores, data["Scores"])
@@ -673,7 +673,7 @@ func TestStrArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.Assert(user.Scores, data["Scores"])

container/garray/garray_z_unit_sorted_any_array_test.go

@@ -656,11 +656,11 @@ func TestSortedArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.NewSortedArray(gutil.ComparatorString)
-		err1 = json.Unmarshal(b2, &a2)
+		err1 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(a2.Slice(), s2)
 
 		var a3 garray.SortedArray
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 		t.Assert(a3.Interfaces(), s1)
@@ -676,11 +676,11 @@ func TestSortedArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.NewSortedArray(gutil.ComparatorString)
-		err1 = json.Unmarshal(b2, &a2)
+		err1 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(a2.Slice(), s2)
 
 		var a3 garray.SortedArray
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 		t.Assert(a3.Interfaces(), s1)
@@ -699,7 +699,7 @@ func TestSortedArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.AssertNE(user.Scores, nil)
@@ -735,7 +735,7 @@ func TestSortedArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.AssertNE(user.Scores, nil)

container/garray/garray_z_unit_sorted_int_array_test.go

@@ -557,11 +557,11 @@ func TestSortedIntArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.NewSortedIntArray()
-		err1 = json.Unmarshal(b2, &a2)
+		err1 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(a2.Slice(), s2)
 
 		var a3 garray.SortedIntArray
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 	})
@@ -576,11 +576,11 @@ func TestSortedIntArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.NewSortedIntArray()
-		err1 = json.Unmarshal(b2, &a2)
+		err1 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(a2.Slice(), s2)
 
 		var a3 garray.SortedIntArray
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 	})
@@ -598,7 +598,7 @@ func TestSortedIntArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.Assert(user.Scores, []int{98, 99, 100})
@@ -617,7 +617,7 @@ func TestSortedIntArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.Assert(user.Scores, []int{98, 99, 100})

container/garray/garray_z_unit_sorted_str_array_test.go

@@ -577,12 +577,12 @@ func TestSortedStrArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.NewSortedStrArray()
-		err1 = json.Unmarshal(b2, &a2)
+		err1 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(a2.Slice(), s2)
 		t.Assert(a2.Interfaces(), s2)
 
 		var a3 garray.SortedStrArray
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 		t.Assert(a3.Interfaces(), s1)
@@ -598,12 +598,12 @@ func TestSortedStrArray_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := garray.NewSortedStrArray()
-		err1 = json.Unmarshal(b2, &a2)
+		err1 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(a2.Slice(), s2)
 		t.Assert(a2.Interfaces(), s2)
 
 		var a3 garray.SortedStrArray
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Slice(), s1)
 		t.Assert(a3.Interfaces(), s1)
@@ -622,7 +622,7 @@ func TestSortedStrArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.Assert(user.Scores, []string{"A", "A", "A+"})
@@ -641,7 +641,7 @@ func TestSortedStrArray_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		user := new(User)
-		err = json.Unmarshal(b, user)
+		err = json.UnmarshalUseNumber(b, user)
 		t.Assert(err, nil)
 		t.Assert(user.Name, data["Name"])
 		t.Assert(user.Scores, []string{"A", "A", "A+"})

container/glist/glist.go

@@ -519,7 +519,7 @@ func (l *List) UnmarshalJSON(b []byte) error {
 		l.list = list.New()
 	}
 	var array []interface{}
-	if err := json.Unmarshal(b, &array); err != nil {
+	if err := json.UnmarshalUseNumber(b, &array); err != nil {
 		return err
 	}
 	l.PushBacks(array)
@@ -536,7 +536,7 @@ func (l *List) UnmarshalValue(value interface{}) (err error) {
 	var array []interface{}
 	switch value.(type) {
 	case string, []byte:
-		err = json.Unmarshal(gconv.Bytes(value), &array)
+		err = json.UnmarshalUseNumber(gconv.Bytes(value), &array)
 	default:
 		array = gconv.SliceAny(value)
 	}

container/glist/glist_z_unit_test.go

@@ -711,7 +711,7 @@ func TestList_Json(t *testing.T) {
 		b, err := json.Marshal(a)
 		t.Assert(err, nil)
 
-		err = json.Unmarshal(b, l)
+		err = json.UnmarshalUseNumber(b, l)
 		t.Assert(err, nil)
 		t.Assert(l.FrontAll(), a)
 	})
@@ -721,7 +721,7 @@ func TestList_Json(t *testing.T) {
 		b, err := json.Marshal(a)
 		t.Assert(err, nil)
 
-		err = json.Unmarshal(b, &l)
+		err = json.UnmarshalUseNumber(b, &l)
 		t.Assert(err, nil)
 		t.Assert(l.FrontAll(), a)
 	})

container/gmap/gmap_hash_any_any_map.go

@@ -476,7 +476,7 @@ func (m *AnyAnyMap) UnmarshalJSON(b []byte) error {
 		m.data = make(map[interface{}]interface{})
 	}
 	var data map[string]interface{}
-	if err := json.Unmarshal(b, &data); err != nil {
+	if err := json.UnmarshalUseNumber(b, &data); err != nil {
 		return err
 	}
 	for k, v := range data {

container/gmap/gmap_hash_int_any_map.go

@@ -475,7 +475,7 @@ func (m *IntAnyMap) UnmarshalJSON(b []byte) error {
 	if m.data == nil {
 		m.data = make(map[int]interface{})
 	}
-	if err := json.Unmarshal(b, &m.data); err != nil {
+	if err := json.UnmarshalUseNumber(b, &m.data); err != nil {
 		return err
 	}
 	return nil
@@ -490,7 +490,7 @@ func (m *IntAnyMap) UnmarshalValue(value interface{}) (err error) {
 	}
 	switch value.(type) {
 	case string, []byte:
-		return json.Unmarshal(gconv.Bytes(value), &m.data)
+		return json.UnmarshalUseNumber(gconv.Bytes(value), &m.data)
 	default:
 		for k, v := range gconv.Map(value) {
 			m.data[gconv.Int(k)] = v

container/gmap/gmap_hash_int_int_map.go

@@ -446,7 +446,7 @@ func (m *IntIntMap) UnmarshalJSON(b []byte) error {
 	if m.data == nil {
 		m.data = make(map[int]int)
 	}
-	if err := json.Unmarshal(b, &m.data); err != nil {
+	if err := json.UnmarshalUseNumber(b, &m.data); err != nil {
 		return err
 	}
 	return nil
@@ -461,7 +461,7 @@ func (m *IntIntMap) UnmarshalValue(value interface{}) (err error) {
 	}
 	switch value.(type) {
 	case string, []byte:
-		return json.Unmarshal(gconv.Bytes(value), &m.data)
+		return json.UnmarshalUseNumber(gconv.Bytes(value), &m.data)
 	default:
 		for k, v := range gconv.Map(value) {
 			m.data[gconv.Int(k)] = gconv.Int(v)

container/gmap/gmap_hash_int_str_map.go

@@ -446,7 +446,7 @@ func (m *IntStrMap) UnmarshalJSON(b []byte) error {
 	if m.data == nil {
 		m.data = make(map[int]string)
 	}
-	if err := json.Unmarshal(b, &m.data); err != nil {
+	if err := json.UnmarshalUseNumber(b, &m.data); err != nil {
 		return err
 	}
 	return nil
@@ -461,7 +461,7 @@ func (m *IntStrMap) UnmarshalValue(value interface{}) (err error) {
 	}
 	switch value.(type) {
 	case string, []byte:
-		return json.Unmarshal(gconv.Bytes(value), &m.data)
+		return json.UnmarshalUseNumber(gconv.Bytes(value), &m.data)
 	default:
 		for k, v := range gconv.Map(value) {
 			m.data[gconv.Int(k)] = gconv.String(v)

container/gmap/gmap_hash_str_any_map.go

@@ -471,7 +471,7 @@ func (m *StrAnyMap) UnmarshalJSON(b []byte) error {
 	if m.data == nil {
 		m.data = make(map[string]interface{})
 	}
-	if err := json.Unmarshal(b, &m.data); err != nil {
+	if err := json.UnmarshalUseNumber(b, &m.data); err != nil {
 		return err
 	}
 	return nil

container/gmap/gmap_hash_str_int_map.go

@@ -449,7 +449,7 @@ func (m *StrIntMap) UnmarshalJSON(b []byte) error {
 	if m.data == nil {
 		m.data = make(map[string]int)
 	}
-	if err := json.Unmarshal(b, &m.data); err != nil {
+	if err := json.UnmarshalUseNumber(b, &m.data); err != nil {
 		return err
 	}
 	return nil
@@ -464,7 +464,7 @@ func (m *StrIntMap) UnmarshalValue(value interface{}) (err error) {
 	}
 	switch value.(type) {
 	case string, []byte:
-		return json.Unmarshal(gconv.Bytes(value), &m.data)
+		return json.UnmarshalUseNumber(gconv.Bytes(value), &m.data)
 	default:
 		for k, v := range gconv.Map(value) {
 			m.data[k] = gconv.Int(v)

container/gmap/gmap_hash_str_str_map.go

@@ -449,7 +449,7 @@ func (m *StrStrMap) UnmarshalJSON(b []byte) error {
 	if m.data == nil {
 		m.data = make(map[string]string)
 	}
-	if err := json.Unmarshal(b, &m.data); err != nil {
+	if err := json.UnmarshalUseNumber(b, &m.data); err != nil {
 		return err
 	}
 	return nil

container/gmap/gmap_list_map.go

@@ -530,7 +530,7 @@ func (m *ListMap) UnmarshalJSON(b []byte) error {
 		m.list = glist.New()
 	}
 	var data map[string]interface{}
-	if err := json.Unmarshal(b, &data); err != nil {
+	if err := json.UnmarshalUseNumber(b, &data); err != nil {
 		return err
 	}
 	for key, value := range data {

container/gmap/gmap_z_unit_any_any_test.go

@@ -255,7 +255,7 @@ func Test_AnyAnyMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		m := gmap.New()
-		err = json.Unmarshal(b, m)
+		err = json.UnmarshalUseNumber(b, m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])
@@ -269,7 +269,7 @@ func Test_AnyAnyMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		var m gmap.Map
-		err = json.Unmarshal(b, &m)
+		err = json.UnmarshalUseNumber(b, &m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])

container/gmap/gmap_z_unit_int_any_test.go

@@ -245,7 +245,7 @@ func Test_IntAnyMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		m := gmap.NewIntAnyMap()
-		err = json.Unmarshal(b, m)
+		err = json.UnmarshalUseNumber(b, m)
 		t.Assert(err, nil)
 		t.Assert(m.Get(1), data[1])
 		t.Assert(m.Get(2), data[2])

container/gmap/gmap_z_unit_int_int_test.go

@@ -251,7 +251,7 @@ func Test_IntIntMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		m := gmap.NewIntIntMap()
-		err = json.Unmarshal(b, m)
+		err = json.UnmarshalUseNumber(b, m)
 		t.Assert(err, nil)
 		t.Assert(m.Get(1), data[1])
 		t.Assert(m.Get(2), data[2])

container/gmap/gmap_z_unit_int_str_test.go

@@ -249,7 +249,7 @@ func Test_IntStrMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		m := gmap.NewIntStrMap()
-		err = json.Unmarshal(b, m)
+		err = json.UnmarshalUseNumber(b, m)
 		t.Assert(err, nil)
 		t.Assert(m.Get(1), data[1])
 		t.Assert(m.Get(2), data[2])

container/gmap/gmap_z_unit_list_map_test.go

@@ -204,7 +204,7 @@ func Test_ListMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		m := gmap.NewListMap()
-		err = json.Unmarshal(b, m)
+		err = json.UnmarshalUseNumber(b, m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])
@@ -219,7 +219,7 @@ func Test_ListMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		var m gmap.ListMap
-		err = json.Unmarshal(b, &m)
+		err = json.UnmarshalUseNumber(b, &m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])

container/gmap/gmap_z_unit_str_any_test.go

@@ -243,7 +243,7 @@ func Test_StrAnyMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		m := gmap.NewStrAnyMap()
-		err = json.Unmarshal(b, m)
+		err = json.UnmarshalUseNumber(b, m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])
@@ -257,7 +257,7 @@ func Test_StrAnyMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		var m gmap.StrAnyMap
-		err = json.Unmarshal(b, &m)
+		err = json.UnmarshalUseNumber(b, &m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])

container/gmap/gmap_z_unit_str_int_test.go

@@ -247,7 +247,7 @@ func Test_StrIntMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		m := gmap.NewStrIntMap()
-		err = json.Unmarshal(b, m)
+		err = json.UnmarshalUseNumber(b, m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])
@@ -261,7 +261,7 @@ func Test_StrIntMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		var m gmap.StrIntMap
-		err = json.Unmarshal(b, &m)
+		err = json.UnmarshalUseNumber(b, &m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])

container/gmap/gmap_z_unit_str_str_test.go

@@ -244,7 +244,7 @@ func Test_StrStrMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		m := gmap.NewStrStrMap()
-		err = json.Unmarshal(b, m)
+		err = json.UnmarshalUseNumber(b, m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])
@@ -258,7 +258,7 @@ func Test_StrStrMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		var m gmap.StrStrMap
-		err = json.Unmarshal(b, &m)
+		err = json.UnmarshalUseNumber(b, &m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])

container/gmap/gmap_z_unit_tree_map_test.go

@@ -188,7 +188,7 @@ func Test_TreeMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		m := gmap.NewTreeMap(gutil.ComparatorString)
-		err = json.Unmarshal(b, m)
+		err = json.UnmarshalUseNumber(b, m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])
@@ -202,7 +202,7 @@ func Test_TreeMap_Json(t *testing.T) {
 		t.Assert(err, nil)
 
 		var m gmap.TreeMap
-		err = json.Unmarshal(b, &m)
+		err = json.UnmarshalUseNumber(b, &m)
 		t.Assert(err, nil)
 		t.Assert(m.Get("k1"), data["k1"])
 		t.Assert(m.Get("k2"), data["k2"])

container/gqueue/gqueue.go

@@ -35,10 +35,8 @@ type Queue struct {
 }
 
 const (
-	// Size for queue buffer.
-	gDEFAULT_QUEUE_SIZE = 10000
-	// Max batch size per-fetching from list.
-	gDEFAULT_MAX_BATCH_SIZE = 10
+	defaultQueueSize = 10000 // Size for queue buffer.
+	defaultBatchSize = 10    // Max batch size per-fetching from list.
 )
 
 // New returns an empty queue object.
@@ -54,7 +52,7 @@ func New(limit ...int) *Queue {
 	} else {
 		q.list = glist.New(true)
 		q.events = make(chan struct{}, math.MaxInt32)
-		q.C = make(chan interface{}, gDEFAULT_QUEUE_SIZE)
+		q.C = make(chan interface{}, defaultQueueSize)
 		go q.asyncLoopFromListToChannel()
 	}
 	return q
@@ -72,8 +70,8 @@ func (q *Queue) asyncLoopFromListToChannel() {
 		<-q.events
 		for !q.closed.Val() {
 			if length := q.list.Len(); length > 0 {
-				if length > gDEFAULT_MAX_BATCH_SIZE {
-					length = gDEFAULT_MAX_BATCH_SIZE
+				if length > defaultBatchSize {
+					length = defaultBatchSize
 				}
 				for _, v := range q.list.PopFronts(length) {
 					// When q.C is closed, it will panic here, especially q.C is being blocked for writing.
@@ -101,7 +99,7 @@ func (q *Queue) Push(v interface{}) {
 		q.C <- v
 	} else {
 		q.list.PushBack(v)
-		if len(q.events) < gDEFAULT_QUEUE_SIZE {
+		if len(q.events) < defaultQueueSize {
 			q.events <- struct{}{}
 		}
 	}
@@ -124,14 +122,14 @@ func (q *Queue) Close() {
 	if q.limit > 0 {
 		close(q.C)
 	}
-	for i := 0; i < gDEFAULT_MAX_BATCH_SIZE; i++ {
+	for i := 0; i < defaultBatchSize; i++ {
 		q.Pop()
 	}
 }
 
 // Len returns the length of the queue.
 // Note that the result might not be accurate as there's a
-// asynchronize channel reading the list constantly.
+// asynchronous channel reading the list constantly.
 func (q *Queue) Len() (length int) {
 	if q.list != nil {
 		length += q.list.Len()

container/gset/gset_any_set.go

@@ -477,7 +477,7 @@ func (set *Set) UnmarshalJSON(b []byte) error {
 		set.data = make(map[interface{}]struct{})
 	}
 	var array []interface{}
-	if err := json.Unmarshal(b, &array); err != nil {
+	if err := json.UnmarshalUseNumber(b, &array); err != nil {
 		return err
 	}
 	for _, v := range array {
@@ -496,7 +496,7 @@ func (set *Set) UnmarshalValue(value interface{}) (err error) {
 	var array []interface{}
 	switch value.(type) {
 	case string, []byte:
-		err = json.Unmarshal(gconv.Bytes(value), &array)
+		err = json.UnmarshalUseNumber(gconv.Bytes(value), &array)
 	default:
 		array = gconv.SliceAny(value)
 	}

container/gset/gset_int_set.go

@@ -437,7 +437,7 @@ func (set *IntSet) UnmarshalJSON(b []byte) error {
 		set.data = make(map[int]struct{})
 	}
 	var array []int
-	if err := json.Unmarshal(b, &array); err != nil {
+	if err := json.UnmarshalUseNumber(b, &array); err != nil {
 		return err
 	}
 	for _, v := range array {
@@ -456,7 +456,7 @@ func (set *IntSet) UnmarshalValue(value interface{}) (err error) {
 	var array []int
 	switch value.(type) {
 	case string, []byte:
-		err = json.Unmarshal(gconv.Bytes(value), &array)
+		err = json.UnmarshalUseNumber(gconv.Bytes(value), &array)
 	default:
 		array = gconv.SliceInt(value)
 	}

container/gset/gset_str_set.go

@@ -465,7 +465,7 @@ func (set *StrSet) UnmarshalJSON(b []byte) error {
 		set.data = make(map[string]struct{})
 	}
 	var array []string
-	if err := json.Unmarshal(b, &array); err != nil {
+	if err := json.UnmarshalUseNumber(b, &array); err != nil {
 		return err
 	}
 	for _, v := range array {
@@ -484,7 +484,7 @@ func (set *StrSet) UnmarshalValue(value interface{}) (err error) {
 	var array []string
 	switch value.(type) {
 	case string, []byte:
-		err = json.Unmarshal(gconv.Bytes(value), &array)
+		err = json.UnmarshalUseNumber(gconv.Bytes(value), &array)
 	default:
 		array = gconv.SliceStr(value)
 	}

container/gset/gset_z_unit_any_test.go

@@ -327,7 +327,7 @@ func TestSet_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := gset.New()
-		err2 = json.Unmarshal(b2, &a2)
+		err2 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(err2, nil)
 		t.Assert(a2.Contains("a"), true)
 		t.Assert(a2.Contains("b"), true)
@@ -336,7 +336,7 @@ func TestSet_Json(t *testing.T) {
 		t.Assert(a2.Contains("e"), false)
 
 		var a3 gset.Set
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Contains("a"), true)
 		t.Assert(a3.Contains("b"), true)

container/gset/gset_z_unit_int_test.go

@@ -358,7 +358,7 @@ func TestIntSet_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := gset.NewIntSet()
-		err2 = json.Unmarshal(b2, &a2)
+		err2 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(err2, nil)
 		t.Assert(a2.Contains(1), true)
 		t.Assert(a2.Contains(2), true)
@@ -367,7 +367,7 @@ func TestIntSet_Json(t *testing.T) {
 		t.Assert(a2.Contains(5), false)
 
 		var a3 gset.IntSet
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a2.Contains(1), true)
 		t.Assert(a2.Contains(2), true)

container/gset/gset_z_unit_str_test.go

@@ -404,7 +404,7 @@ func TestStrSet_Json(t *testing.T) {
 		t.Assert(err1, err2)
 
 		a2 := gset.NewStrSet()
-		err2 = json.Unmarshal(b2, &a2)
+		err2 = json.UnmarshalUseNumber(b2, &a2)
 		t.Assert(err2, nil)
 		t.Assert(a2.Contains("a"), true)
 		t.Assert(a2.Contains("b"), true)
@@ -413,7 +413,7 @@ func TestStrSet_Json(t *testing.T) {
 		t.Assert(a2.Contains("e"), false)
 
 		var a3 gset.StrSet
-		err := json.Unmarshal(b2, &a3)
+		err := json.UnmarshalUseNumber(b2, &a3)
 		t.Assert(err, nil)
 		t.Assert(a3.Contains("a"), true)
 		t.Assert(a3.Contains("b"), true)

container/gtree/gtree_redblacktree.go

@@ -937,7 +937,7 @@ func (tree *RedBlackTree) UnmarshalJSON(b []byte) error {
 		tree.comparator = gutil.ComparatorString
 	}
 	var data map[string]interface{}
-	if err := json.Unmarshal(b, &data); err != nil {
+	if err := json.UnmarshalUseNumber(b, &data); err != nil {
 		return err
 	}
 	for k, v := range data {

container/gtype/interface.go

@@ -58,7 +58,7 @@ func (v *Interface) MarshalJSON() ([]byte, error) {
 // UnmarshalJSON implements the interface UnmarshalJSON for json.Unmarshal.
 func (v *Interface) UnmarshalJSON(b []byte) error {
 	var i interface{}
-	err := json.Unmarshal(b, &i)
+	err := json.UnmarshalUseNumber(b, &i)
 	if err != nil {
 		return err
 	}

container/gtype/z_unit_bool_test.go

@@ -55,16 +55,16 @@ func Test_Bool_JSON(t *testing.T) {
 	gtest.C(t, func(t *gtest.T) {
 		var err error
 		i := gtype.NewBool()
-		err = json.Unmarshal([]byte("true"), &i)
+		err = json.UnmarshalUseNumber([]byte("true"), &i)
 		t.Assert(err, nil)
 		t.Assert(i.Val(), true)
-		err = json.Unmarshal([]byte("false"), &i)
+		err = json.UnmarshalUseNumber([]byte("false"), &i)
 		t.Assert(err, nil)
 		t.Assert(i.Val(), false)
-		err = json.Unmarshal([]byte("1"), &i)
+		err = json.UnmarshalUseNumber([]byte("1"), &i)
 		t.Assert(err, nil)
 		t.Assert(i.Val(), true)
-		err = json.Unmarshal([]byte("0"), &i)
+		err = json.UnmarshalUseNumber([]byte("0"), &i)
 		t.Assert(err, nil)
 		t.Assert(i.Val(), false)
 	})
@@ -78,7 +78,7 @@ func Test_Bool_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewBool()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), i.Val())
 	})
@@ -91,7 +91,7 @@ func Test_Bool_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewBool()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), i.Val())
 	})

container/gtype/z_unit_byte_test.go

@@ -53,7 +53,7 @@ func Test_Byte_JSON(t *testing.T) {
 	gtest.C(t, func(t *gtest.T) {
 		var err error
 		i := gtype.NewByte()
-		err = json.Unmarshal([]byte("49"), &i)
+		err = json.UnmarshalUseNumber([]byte("49"), &i)
 		t.Assert(err, nil)
 		t.Assert(i.Val(), "49")
 	})

container/gtype/z_unit_bytes_test.go

@@ -39,7 +39,7 @@ func Test_Bytes_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewBytes()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), b)
 	})

container/gtype/z_unit_float32_test.go

@@ -40,7 +40,7 @@ func Test_Float32_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewFloat32()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), v)
 	})

container/gtype/z_unit_float64_test.go

@@ -38,7 +38,7 @@ func Test_Float64_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewFloat64()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), v)
 	})

container/gtype/z_unit_int32_test.go

@@ -51,7 +51,7 @@ func Test_Int32_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewInt32()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), v)
 	})

container/gtype/z_unit_int64_test.go

@@ -50,7 +50,7 @@ func Test_Int64_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewInt64()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), i)
 	})

container/gtype/z_unit_int_test.go

@@ -50,7 +50,7 @@ func Test_Int_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewInt()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), v)
 	})

container/gtype/z_unit_interface_test.go

@@ -40,7 +40,7 @@ func Test_Interface_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.New()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), s)
 	})

container/gtype/z_unit_string_test.go

@@ -38,7 +38,7 @@ func Test_String_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewString()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), s)
 	})

container/gtype/z_unit_uint32_test.go

@@ -50,7 +50,7 @@ func Test_Uint32_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewUint32()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), i)
 	})

container/gtype/z_unit_uint64_test.go

@@ -55,7 +55,7 @@ func Test_Uint64_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewUint64()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), i)
 	})

container/gtype/z_unit_uint_test.go

@@ -49,7 +49,7 @@ func Test_Uint_JSON(t *testing.T) {
 		t.Assert(b1, b2)
 
 		i2 := gtype.NewUint()
-		err := json.Unmarshal(b2, &i2)
+		err := json.UnmarshalUseNumber(b2, &i2)
 		t.Assert(err, nil)
 		t.Assert(i2.Val(), i)
 	})

container/gvar/gvar.go

@@ -189,7 +189,7 @@ func (v *Var) MarshalJSON() ([]byte, error) {
 // UnmarshalJSON implements the interface UnmarshalJSON for json.Unmarshal.
 func (v *Var) UnmarshalJSON(b []byte) error {
 	var i interface{}
-	err := json.Unmarshal(b, &i)
+	err := json.UnmarshalUseNumber(b, &i)
 	if err != nil {
 		return err
 	}

container/gvar/gvar_z_unit_json_test.go

@@ -41,7 +41,7 @@ func TestVar_Json(t *testing.T) {
 		b, err := json.Marshal(s)
 		t.Assert(err, nil)
 
-		err = json.Unmarshal(b, v)
+		err = json.UnmarshalUseNumber(b, v)
 		t.Assert(err, nil)
 		t.Assert(v.String(), s)
 	})
@@ -52,7 +52,7 @@ func TestVar_Json(t *testing.T) {
 		b, err := json.Marshal(s)
 		t.Assert(err, nil)
 
-		err = json.Unmarshal(b, &v)
+		err = json.UnmarshalUseNumber(b, &v)
 		t.Assert(err, nil)
 		t.Assert(v.String(), s)
 	})

database/gdb/gdb.go

@@ -11,9 +11,10 @@ import (
 	"context"
 	"database/sql"
 	"fmt"
+	"time"
+
 	"github.com/gogf/gf/errors/gerror"
 	"github.com/gogf/gf/os/gcmd"
-	"time"
 
 	"github.com/gogf/gf/container/gvar"
 	"github.com/gogf/gf/internal/intlog"
@@ -32,11 +33,12 @@ type DB interface {
 	// Model creation.
 	// ===========================================================================
 
+	// Table function is deprecated, use Model instead.
 	// The DB interface is designed not only for
 	// relational databases but also for NoSQL databases in the future. The name
 	// "Table" is not proper for that purpose any more.
-	// Deprecated, use Model instead.
-	Table(table ...string) *Model
+	// Also see Core.Table.
+	Table(tableNameOrStruct ...interface{}) *Model
 
 	// Model creates and returns a new ORM model from given schema.
 	// The parameter `table` can be more than one table names, and also alias name, like:
@@ -46,150 +48,144 @@ type DB interface {
 	//    Model("user, user_detail")
 	//    Model("user u, user_detail ud")
 	// 2. Model name with alias: Model("user", "u")
-	Model(table ...string) *Model
+	// Also see Core.Model.
+	Model(tableNameOrStruct ...interface{}) *Model
 
 	// Schema creates and returns a schema.
+	// Also see Core.Schema.
 	Schema(schema string) *Schema
 
 	// With creates and returns an ORM model based on meta data of given object.
-	With(object interface{}) *Model
+	// Also see Core.With.
+	With(objects ...interface{}) *Model
 
 	// Open creates a raw connection object for database with given node configuration.
 	// Note that it is not recommended using the this function manually.
+	// Also see DriverMysql.Open.
 	Open(config *ConfigNode) (*sql.DB, error)
 
 	// Ctx is a chaining function, which creates and returns a new DB that is a shallow copy
 	// of current DB object and with given context in it.
 	// Note that this returned DB object can be used only once, so do not assign it to
 	// a global or package variable for long using.
+	// Also see Core.Ctx.
 	Ctx(ctx context.Context) DB
 
 	// ===========================================================================
 	// Query APIs.
 	// ===========================================================================
 
-	Query(sql string, args ...interface{}) (*sql.Rows, error)
-	Exec(sql string, args ...interface{}) (sql.Result, error)
-	Prepare(sql string, execOnMaster ...bool) (*Stmt, error)
+	Query(sql string, args ...interface{}) (*sql.Rows, error) // See Core.Query.
+	Exec(sql string, args ...interface{}) (sql.Result, error) // See Core.Exec.
+	Prepare(sql string, execOnMaster ...bool) (*Stmt, error)  // See Core.Prepare.
 
 	// ===========================================================================
 	// Common APIs for CURD.
 	// ===========================================================================
 
-	Insert(table string, data interface{}, batch ...int) (sql.Result, error)
-	InsertIgnore(table string, data interface{}, batch ...int) (sql.Result, error)
-	Replace(table string, data interface{}, batch ...int) (sql.Result, error)
-	Save(table string, data interface{}, batch ...int) (sql.Result, error)
+	Insert(table string, data interface{}, batch ...int) (sql.Result, error)       // See Core.Insert.
+	InsertIgnore(table string, data interface{}, batch ...int) (sql.Result, error) // See Core.InsertIgnore.
+	InsertAndGetId(table string, data interface{}, batch ...int) (int64, error)    // See Core.InsertAndGetId.
+	Replace(table string, data interface{}, batch ...int) (sql.Result, error)      // See Core.Replace.
+	Save(table string, data interface{}, batch ...int) (sql.Result, error)         // See Core.Save.
 
-	BatchInsert(table string, list interface{}, batch ...int) (sql.Result, error)
-	BatchReplace(table string, list interface{}, batch ...int) (sql.Result, error)
-	BatchSave(table string, list interface{}, batch ...int) (sql.Result, error)
+	BatchInsert(table string, list interface{}, batch ...int) (sql.Result, error)  // See Core.BatchInsert.
+	BatchReplace(table string, list interface{}, batch ...int) (sql.Result, error) // See Core.BatchReplace.
+	BatchSave(table string, list interface{}, batch ...int) (sql.Result, error)    // See Core.BatchSave.
 
-	Update(table string, data interface{}, condition interface{}, args ...interface{}) (sql.Result, error)
-	Delete(table string, condition interface{}, args ...interface{}) (sql.Result, error)
+	Update(table string, data interface{}, condition interface{}, args ...interface{}) (sql.Result, error) // See Core.Update.
+	Delete(table string, condition interface{}, args ...interface{}) (sql.Result, error)                   // See Core.Delete.
 
 	// ===========================================================================
 	// Internal APIs for CURD, which can be overwrote for custom CURD implements.
 	// ===========================================================================
 
-	DoQuery(link Link, sql string, args ...interface{}) (rows *sql.Rows, err error)
-	DoGetAll(link Link, sql string, args ...interface{}) (result Result, err error)
-	DoExec(link Link, sql string, args ...interface{}) (result sql.Result, err error)
-	DoPrepare(link Link, sql string) (*Stmt, error)
-	DoInsert(link Link, table string, data interface{}, option int, batch ...int) (result sql.Result, err error)
-	DoBatchInsert(link Link, table string, list interface{}, option int, batch ...int) (result sql.Result, err error)
-	DoUpdate(link Link, table string, data interface{}, condition string, args ...interface{}) (result sql.Result, err error)
-	DoDelete(link Link, table string, condition string, args ...interface{}) (result sql.Result, err error)
+	DoQuery(ctx context.Context, link Link, sql string, args ...interface{}) (rows *sql.Rows, err error)                                           // See Core.DoQuery.
+	DoExec(ctx context.Context, link Link, sql string, args ...interface{}) (result sql.Result, err error)                                         // See Core.DoExec.
+	DoPrepare(ctx context.Context, link Link, sql string) (*Stmt, error)                                                                           // See Core.DoPrepare.
+	DoGetAll(ctx context.Context, link Link, sql string, args ...interface{}) (result Result, err error)                                           // See Core.DoGetAll.
+	DoInsert(ctx context.Context, link Link, table string, data interface{}, option int, batch ...int) (result sql.Result, err error)              // See Core.DoInsert.
+	DoBatchInsert(ctx context.Context, link Link, table string, list interface{}, option int, batch ...int) (result sql.Result, err error)         // See Core.DoBatchInsert.
+	DoUpdate(ctx context.Context, link Link, table string, data interface{}, condition string, args ...interface{}) (result sql.Result, err error) // See Core.DoUpdate.
+	DoDelete(ctx context.Context, link Link, table string, condition string, args ...interface{}) (result sql.Result, err error)                   // See Core.DoDelete.
 
 	// ===========================================================================
 	// Query APIs for convenience purpose.
 	// ===========================================================================
 
-	GetAll(sql string, args ...interface{}) (Result, error)
-	GetOne(sql string, args ...interface{}) (Record, error)
-	GetValue(sql string, args ...interface{}) (Value, error)
-	GetArray(sql string, args ...interface{}) ([]Value, error)
-	GetCount(sql string, args ...interface{}) (int, error)
-	GetStruct(objPointer interface{}, sql string, args ...interface{}) error
-	GetStructs(objPointerSlice interface{}, sql string, args ...interface{}) error
-	GetScan(objPointer interface{}, sql string, args ...interface{}) error
+	GetAll(sql string, args ...interface{}) (Result, error)                        // See Core.GetAll.
+	GetOne(sql string, args ...interface{}) (Record, error)                        // See Core.GetOne.
+	GetValue(sql string, args ...interface{}) (Value, error)                       // See Core.GetValue.
+	GetArray(sql string, args ...interface{}) ([]Value, error)                     // See Core.GetArray.
+	GetCount(sql string, args ...interface{}) (int, error)                         // See Core.GetCount.
+	GetStruct(objPointer interface{}, sql string, args ...interface{}) error       // See Core.GetStruct.
+	GetStructs(objPointerSlice interface{}, sql string, args ...interface{}) error // See Core.GetStructs.
+	GetScan(objPointer interface{}, sql string, args ...interface{}) error         // See Core.GetScan.
 
 	// ===========================================================================
 	// Master/Slave specification support.
 	// ===========================================================================
 
-	Master() (*sql.DB, error)
-	Slave() (*sql.DB, error)
+	Master(schema ...string) (*sql.DB, error) // See Core.Master.
+	Slave(schema ...string) (*sql.DB, error)  // See Core.Slave.
 
 	// ===========================================================================
 	// Ping-Pong.
 	// ===========================================================================
 
-	PingMaster() error
-	PingSlave() error
+	PingMaster() error // See Core.PingMaster.
+	PingSlave() error  // See Core.PingSlave.
 
 	// ===========================================================================
 	// Transaction.
 	// ===========================================================================
 
-	Begin() (*TX, error)
-	Transaction(f func(tx *TX) error) (err error)
+	Begin() (*TX, error)                                                              // See Core.Begin.
+	Transaction(ctx context.Context, f func(ctx context.Context, tx *TX) error) error // See Core.Transaction.
 
 	// ===========================================================================
 	// Configuration methods.
 	// ===========================================================================
 
-	GetCache() *gcache.Cache
-	SetDebug(debug bool)
-	GetDebug() bool
-	SetSchema(schema string)
-	GetSchema() string
-	GetPrefix() string
-	GetGroup() string
-	SetDryRun(dryrun bool)
-	GetDryRun() bool
-	SetLogger(logger *glog.Logger)
-	GetLogger() *glog.Logger
-	GetConfig() *ConfigNode
-	SetMaxIdleConnCount(n int)
-	SetMaxOpenConnCount(n int)
-	SetMaxConnLifetime(d time.Duration)
+	GetCache() *gcache.Cache            // See Core.GetCache.
+	SetDebug(debug bool)                // See Core.SetDebug.
+	GetDebug() bool                     // See Core.GetDebug.
+	SetSchema(schema string)            // See Core.SetSchema.
+	GetSchema() string                  // See Core.GetSchema.
+	GetPrefix() string                  // See Core.GetPrefix.
+	GetGroup() string                   // See Core.GetGroup.
+	SetDryRun(enabled bool)             // See Core.SetDryRun.
+	GetDryRun() bool                    // See Core.GetDryRun.
+	SetLogger(logger *glog.Logger)      // See Core.SetLogger.
+	GetLogger() *glog.Logger            // See Core.GetLogger.
+	GetConfig() *ConfigNode             // See Core.GetConfig.
+	SetMaxIdleConnCount(n int)          // See Core.SetMaxIdleConnCount.
+	SetMaxOpenConnCount(n int)          // See Core.SetMaxOpenConnCount.
+	SetMaxConnLifeTime(d time.Duration) // See Core.SetMaxConnLifeTime.
 
 	// ===========================================================================
 	// Utility methods.
 	// ===========================================================================
 
-	GetCtx() context.Context
-	GetChars() (charLeft string, charRight string)
-	GetMaster(schema ...string) (*sql.DB, error)
-	GetSlave(schema ...string) (*sql.DB, error)
-	QuoteWord(s string) string
-	QuoteString(s string) string
-	QuotePrefixTableName(table string) string
-	Tables(schema ...string) (tables []string, err error)
-	TableFields(table string, schema ...string) (map[string]*TableField, error)
-	HasTable(name string) (bool, error)
-	FilteredLinkInfo() string
+	GetCtx() context.Context                                                                         // See Core.GetCtx.
+	GetCore() *Core                                                                                  // See Core.GetCore
+	GetChars() (charLeft string, charRight string)                                                   // See Core.GetChars.
+	Tables(ctx context.Context, schema ...string) (tables []string, err error)                       // See Core.Tables.
+	TableFields(ctx context.Context, table string, schema ...string) (map[string]*TableField, error) // See Core.TableFields.
+	FilteredLinkInfo() string                                                                        // See Core.FilteredLinkInfo.
 
 	// HandleSqlBeforeCommit is a hook function, which deals with the sql string before
 	// it's committed to underlying driver. The parameter `link` specifies the current
 	// database connection operation object. You can modify the sql string `sql` and its
 	// arguments `args` as you wish before they're committed to driver.
-	HandleSqlBeforeCommit(link Link, sql string, args []interface{}) (string, []interface{})
-
-	// ===========================================================================
-	// Internal methods, for internal usage purpose, you do not need consider it.
-	// ===========================================================================
-
-	mappingAndFilterData(schema, table string, data map[string]interface{}, filter bool) (map[string]interface{}, error)
-	convertFieldValueToLocalValue(fieldValue interface{}, fieldType string) interface{}
-	convertRowsToResult(rows *sql.Rows) (Result, error)
+	// Also see Core.HandleSqlBeforeCommit.
+	HandleSqlBeforeCommit(ctx context.Context, link Link, sql string, args []interface{}) (string, []interface{})
 }
 
 // Core is the base struct for database management.
 type Core struct {
 	db     DB              // DB interface object.
-	ctx    context.Context // Context for chaining operation only.
+	ctx    context.Context // Context for chaining operation only. Do not set a default value in Core initialization.
 	group  string          // Configuration group name.
 	debug  *gtype.Bool     // Enable debug mode for the database, which can be changed in runtime.
 	cache  *gcache.Cache   // Cache manager, SQL result cache only.
@@ -204,16 +200,28 @@ type Driver interface {
 	New(core *Core, node *ConfigNode) (DB, error)
 }
 
+// Link is a common database function wrapper interface.
+type Link interface {
+	Query(sql string, args ...interface{}) (*sql.Rows, error)
+	Exec(sql string, args ...interface{}) (sql.Result, error)
+	Prepare(sql string) (*sql.Stmt, error)
+	QueryContext(ctx context.Context, sql string, args ...interface{}) (*sql.Rows, error)
+	ExecContext(ctx context.Context, sql string, args ...interface{}) (sql.Result, error)
+	PrepareContext(ctx context.Context, sql string) (*sql.Stmt, error)
+	IsTransaction() bool
+}
+
 // Sql is the sql recording struct.
 type Sql struct {
-	Sql    string        // SQL string(may contain reserved char '?').
-	Type   string        // SQL operation type.
-	Args   []interface{} // Arguments for this sql.
-	Format string        // Formatted sql which contains arguments in the sql.
-	Error  error         // Execution result.
-	Start  int64         // Start execution timestamp in milliseconds.
-	End    int64         // End execution timestamp in milliseconds.
-	Group  string        // Group is the group name of the configuration that the sql is executed from.
+	Sql           string        // SQL string(may contain reserved char '?').
+	Type          string        // SQL operation type.
+	Args          []interface{} // Arguments for this sql.
+	Format        string        // Formatted sql which contains arguments in the sql.
+	Error         error         // Execution result.
+	Start         int64         // Start execution timestamp in milliseconds.
+	End           int64         // End execution timestamp in milliseconds.
+	Group         string        // Group is the group name of the configuration that the sql is executed from.
+	IsTransaction bool          // IsTransaction marks whether this sql is executed in transaction.
 }
 
 // TableField is the struct for table field.
@@ -228,16 +236,6 @@ type TableField struct {
 	Comment string      // Comment.
 }
 
-// Link is a common database function wrapper interface.
-type Link interface {
-	Query(sql string, args ...interface{}) (*sql.Rows, error)
-	Exec(sql string, args ...interface{}) (sql.Result, error)
-	Prepare(sql string) (*sql.Stmt, error)
-	QueryContext(ctx context.Context, sql string, args ...interface{}) (*sql.Rows, error)
-	ExecContext(ctx context.Context, sql string, args ...interface{}) (sql.Result, error)
-	PrepareContext(ctx context.Context, sql string) (*sql.Stmt, error)
-}
-
 // Counter  is the type for update count.
 type Counter struct {
 	Field string
@@ -289,16 +287,19 @@ var (
 
 	// regularFieldNameRegPattern is the regular expression pattern for a string
 	// which is a regular field name of table.
-	regularFieldNameRegPattern = `^[\w\.\-\_]+$`
+	regularFieldNameRegPattern = `^[\w\.\-]+$`
 
 	// regularFieldNameWithoutDotRegPattern is similar to regularFieldNameRegPattern but not allows '.'.
 	// Note that, although some databases allow char '.' in the field name, but it here does not allow '.'
 	// in the field name as it conflicts with "db.table.field" pattern in SOME situations.
-	regularFieldNameWithoutDotRegPattern = `^[\w\-\_]+$`
+	regularFieldNameWithoutDotRegPattern = `^[\w\-]+$`
 
 	// internalCache is the memory cache for internal usage.
 	internalCache = gcache.New()
 
+	// tableFieldsMap caches the table information retrived from database.
+	tableFieldsMap = gmap.New(true)
+
 	// allDryRun sets dry-run feature for all database connections.
 	// It is commonly used for command options for convenience.
 	allDryRun = false
@@ -327,7 +328,7 @@ func New(group ...string) (db DB, err error) {
 	defer configs.RUnlock()
 
 	if len(configs.config) < 1 {
-		return nil, gerror.New("empty database configuration")
+		return nil, gerror.New("database configuration is empty, please set the database configuration before using")
 	}
 	if _, ok := configs.config[groupName]; ok {
 		if node, err := getConfigNodeByGroup(groupName, true); err == nil {
@@ -346,13 +347,19 @@ func New(group ...string) (db DB, err error) {
 				}
 				return c.db, nil
 			} else {
-				return nil, gerror.New(fmt.Sprintf(`unsupported database type "%s"`, node.Type))
+				return nil, gerror.Newf(
+					`cannot find database driver for specified database type "%s", did you misspell type name "%s" or forget importing the database driver?`,
+					node.Type, node.Type,
+				)
 			}
 		} else {
 			return nil, err
 		}
 	} else {
-		return nil, gerror.New(fmt.Sprintf(`database configuration node "%s" is not found`, groupName))
+		return nil, gerror.Newf(
+			`database configuration node "%s" is not found, did you misspell group name "%s" or miss the database configuration?`,
+			groupName, groupName,
+		)
 	}
 }
 
@@ -471,15 +478,26 @@ func (c *Core) getSqlDb(master bool, schema ...string) (sqlDb *sql.DB, err error
 	}
 	// Cache the underlying connection pool object by node.
 	v, _ := internalCache.GetOrSetFuncLock(node.String(), func() (interface{}, error) {
-		sqlDb, err = c.db.Open(node)
-		if err != nil {
-			intlog.Printf(`db open failed: %v, %+v`, err, node)
-			return nil, err
-		}
 		intlog.Printf(
-			`open new connection, master:%v, config:%+v, node:%+v`,
+			`open new connection, master:%#v, config:%#v, node:%#v`,
 			master, c.config, node,
 		)
+		defer func() {
+			if err != nil {
+				intlog.Printf(`open new connection failed: %v, %#v`, err, node)
+			} else {
+				intlog.Printf(
+					`open new connection success, master:%#v, config:%#v, node:%#v`,
+					master, c.config, node,
+				)
+			}
+		}()
+
+		sqlDb, err = c.db.Open(node)
+		if err != nil {
+			return nil, err
+		}
+
 		if c.config.MaxIdleConnCount > 0 {
 			sqlDb.SetMaxIdleConns(c.config.MaxIdleConnCount)
 		} else {
@@ -490,13 +508,13 @@ func (c *Core) getSqlDb(master bool, schema ...string) (sqlDb *sql.DB, err error
 		} else {
 			sqlDb.SetMaxOpenConns(defaultMaxOpenConnCount)
 		}
-		if c.config.MaxConnLifetime > 0 {
+		if c.config.MaxConnLifeTime > 0 {
 			// Automatically checks whether MaxConnLifetime is configured using string like: "30s", "60s", etc.
 			// Or else it is configured just using number, which means value in seconds.
-			if c.config.MaxConnLifetime > time.Second {
-				sqlDb.SetConnMaxLifetime(c.config.MaxConnLifetime)
+			if c.config.MaxConnLifeTime > time.Second {
+				sqlDb.SetConnMaxLifetime(c.config.MaxConnLifeTime)
 			} else {
-				sqlDb.SetConnMaxLifetime(c.config.MaxConnLifetime * time.Second)
+				sqlDb.SetConnMaxLifetime(c.config.MaxConnLifeTime * time.Second)
 			}
 		} else {
 			sqlDb.SetConnMaxLifetime(defaultMaxConnLifeTime)