目录结构调整

gexample/encoding/ghash.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+    "strconv"
+    "fmt"
+    "gf/g/encoding/ghash"
+)
+
+func main () {
+    m := make(map[uint64]bool)
+    for i := 0; i < 100000000; i++ {
+        hash := ghash.BKDRHash64([]byte("key_" + strconv.Itoa(i)))
+        if _, ok := m[hash]; ok {
+            fmt.Printf("duplicated hash %d\n", hash)
+        } else {
+            m[hash] = true
+        }
+    }
+}
+

gexample/encoding/json.go

@@ -0,0 +1,112 @@
+package main
+
+import (
+    "fmt"
+    //"encoding/json"
+    "gf/g/encoding/gjson"
+)
+
+type City struct {
+    Age  string
+    CityId      int
+    CityName    string
+    ProvinceId  int
+    //CityOrder   int
+}
+
+func main() {
+    //data := `[{"CityId":1, "CityName":"北京", "ProvinceId":1, "CityOrder":1}, {"CityId":5, "CityName":"成都", "ProvinceId":27, "CityOrder":1}]`
+    data := `{"name":"中国","age":31,"list":[["a","b","c"],["d","e","f"]],"items":{"title":"make\"he moon","name":"make'he moon","content":"'[}]{[}he moon"}}`
+    //data := `[{"CityId":18,"CityName":"西安","ProvinceId":27,"CityOrder":1},{"CityId":53,"CityName":"广州","ProvinceId":27,"CityOrder":1}]`
+    //data := `{"name"  :  "中国",  "age" : 31, "items":[1,2,3]}`
+    //data := `[["a","b","c"],["d","e","f"]]`
+    //data := `["a","b","c"]`
+    //json   := `
+    //[1,{"a":2},
+    //{"a":{}},
+    //{"a":[]},
+    //{"a":[{}]},
+    //{"{[a" : "\"2,:3," a ":33}]"}]` // 错误的json
+    //data := `["a","b","c"`        // 错误的json
+    //data := `,{ "name"  :  "中国",  "age" : 31, "items":[1,2]:}` //错误的json
+
+    v := gjson.DecodeToJson(&data)
+    fmt.Println(v.GetNumber("list"))
+
+    //v := map[string]interface{} {
+    //
+    //    "name" : "中国",
+    //    "age"  : 11,
+    //    "list" : []interface{} {
+    //        1,2,3,4,
+    //    },
+    //}
+    //r, _ := json.MarshalIndent(v, "", "\t")
+    //fmt.Println(string(r))
+    //s, _ := gjson.Encode(v)
+    //fmt.Println(*s)
+
+
+    //p, err := gjson.Decode(&data)
+    //if err == nil {
+    //    //p.Print()
+    //    //fmt.Println(p.Get("0"))
+    //    fmt.Println(p.GetMap("0"))
+    //} else {
+    //    fmt.Println(err)
+    //}
+    //fmt.Println()
+    //fmt.Println()
+    ////v := make(map[string]interface{})
+    ////i := 31
+    ////j := "john"
+    ////v["age"]  = i
+    ////v["name"] = make(map[string]interface{})
+    ////t := v["name"]
+    ////t.(map[string]interface{})["n"] = j
+    ////
+    ////fmt.Println(v)
+    //var s struct{
+    //    v interface{}
+    //    p interface{}
+    //}
+    //v  := make(map[string]interface{})
+    //s.v = v
+    //s.p = &v
+    //c  := (*s.p.(*map[string]interface{}))
+    //c["name1"] = "john1"
+    //
+    //t          := make(map[string]interface{})
+    //c["/"]      = t
+    //s.p         = &t
+    //t["name2"]  = "john2"
+    //
+    //c2         := (*s.p.(*map[string]interface{}))
+    //c2["name3"] = "john3"
+    //
+    ////t2[2] = 100
+    //fmt.Println(s.v)
+
+
+    //a := map[string]interface{} {
+    //    "name" : "john",
+    //    "list" : []interface{}{
+    //        1,2,3, "fuck",
+    //    },
+    //    "item" : map[string]string {
+    //        "n1" : "v1",
+    //        "n2" : "v2",
+    //        "n3" : "v3",
+    //    },
+    //}
+    //fmt.Println(json.M)
+
+    //
+    //var a = []int{1,2,3}
+    //var b = []int{4,5,6, 7,8}
+    //cc := make([]int, len(a) + 12)
+    //a = cc
+    //copy(a, b)
+    //fmt.Println(a)
+    //fmt.Println(b)
+}

gexample/encoding/json_test.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+    "testing"
+    "gf/g/encoding/gjson"
+    "encoding/json"
+    "log"
+)
+
+// go test json_test.go -bench=".*"
+
+var data = `[{"CityId":1, "CityName":"北京", "ProvinceId":1, "CityOrder":1}, {"CityId":5, "CityName":"成都", "ProvinceId":27, "CityOrder":1}]`
+
+func BenchmarkJsonDecode(b *testing.B) {
+    b.N = 1000000
+    for i := 0; i < b.N; i++ {
+        gjson.Decode(data)
+    }
+}
+
+func BenchmarkJsonDecodeByUnmarshal(b *testing.B) {
+    b.N = 1000000
+    for i := 0; i < b.N; i++ {
+        var citys interface{}
+        if err := json.Unmarshal([]byte(data), &citys); err != nil {
+            log.Fatalf("JSON unmarshaling failed: %s", err)
+        }
+        //fmt.Println(citys)
+    }
+}
+