目录结构调整，内部包引用调整为相对路径

g/container/gset/string_set.go

@@ -0,0 +1,108 @@
+package gset
+
+import (
+	"fmt"
+	"sync"
+)
+
+type StringSet struct {
+	sync.RWMutex
+	M map[string]struct{}
+}
+
+func NewStringSet() *StringSet {
+	return &StringSet{M: make(map[string]struct{})}
+}
+
+// 设置键
+func (this *StringSet) Add(item string) *StringSet {
+	if this.Contains(item) {
+		return this
+	}
+	this.Lock()
+	this.M[item] = struct{}{}
+	this.Unlock()
+	return this
+}
+
+// 批量添加设置键
+func (this *StringSet) BatchAdd(items []string) *StringSet {
+    count := len(items)
+    if count == 0 {
+        return this
+    }
+
+    todo := make([]string, 0, count)
+    this.RLock()
+    for i := 0; i < count; i++ {
+        _, exists := this.M[items[i]]
+        if exists {
+            continue
+        }
+
+        todo = append(todo, items[i])
+    }
+    this.RUnlock()
+
+    count = len(todo)
+    if count == 0 {
+        return this
+    }
+
+    this.Lock()
+    for i := 0; i < count; i++ {
+        this.M[todo[i]] = struct{}{}
+    }
+    this.Unlock()
+    return this
+}
+
+// 键是否存在
+func (this *StringSet) Contains(item string) bool {
+	this.RLock()
+	_, exists := this.M[item]
+	this.RUnlock()
+	return exists
+}
+
+// 删除键值对
+func (this *StringSet) Remove(key string) {
+	this.Lock()
+	delete(this.M, key)
+	this.Unlock()
+}
+
+// 大小
+func (this *StringSet) Size() int {
+	this.RLock()
+	l := len(this.M)
+	this.RUnlock()
+	return l
+}
+
+// 清空set
+func (this *StringSet) Clear() {
+	this.Lock()
+	this.M = make(map[string]struct{})
+	this.Unlock()
+}
+
+// 转换为数组
+func (this *StringSet) Slice() []string {
+	this.RLock()
+	ret := make([]string, len(this.M))
+	i := 0
+	for item := range this.M {
+		ret[i] = item
+		i++
+	}
+
+	this.RUnlock()
+	return ret
+}
+
+// 转换为字符串
+func (this *StringSet) String() string {
+	s := this.Slice()
+	return fmt.Sprint(s)
+}