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101 lines
1.8 KiB
Go
101 lines
1.8 KiB
Go
// Copyright 2017 gf Author(https://gitee.com/johng/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://gitee.com/johng/gf.
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//
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package gset
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import (
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"fmt"
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"sync"
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)
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type StringSet struct {
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mu sync.RWMutex
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m map[string]struct{}
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}
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func NewStringSet() *StringSet {
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return &StringSet{m: make(map[string]struct{})}
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}
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// 给定回调函数对原始内容进行遍历，回调函数返回true表示继续遍历，否则停止遍历
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func (this *StringSet) Iterator(f func (v string) bool) {
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this.mu.RLock()
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for k, _ := range this.m {
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if !f(k) {
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break
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}
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}
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this.mu.RUnlock()
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}
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// 设置键
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func (this *StringSet) Add(item string) *StringSet {
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this.mu.Lock()
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this.m[item] = struct{}{}
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this.mu.Unlock()
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return this
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}
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// 批量添加设置键
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func (this *StringSet) BatchAdd(items []string) *StringSet {
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this.mu.Lock()
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for _, item := range items {
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this.m[item] = struct{}{}
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}
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this.mu.Unlock()
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return this
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}
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// 键是否存在
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func (this *StringSet) Contains(item string) bool {
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this.mu.RLock()
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_, exists := this.m[item]
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this.mu.RUnlock()
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return exists
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}
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// 删除键值对
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func (this *StringSet) Remove(key string) {
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this.mu.Lock()
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delete(this.m, key)
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this.mu.Unlock()
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}
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// 大小
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func (this *StringSet) Size() int {
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this.mu.RLock()
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l := len(this.m)
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this.mu.RUnlock()
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return l
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}
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// 清空set
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func (this *StringSet) Clear() {
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this.mu.Lock()
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this.m = make(map[string]struct{})
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this.mu.Unlock()
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}
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// 转换为数组
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func (this *StringSet) Slice() []string {
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this.mu.RLock()
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ret := make([]string, len(this.m))
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i := 0
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for item := range this.m {
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ret[i] = item
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i++
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}
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this.mu.RUnlock()
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return ret
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}
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// 转换为字符串
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func (this *StringSet) String() string {
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return fmt.Sprint(this.Slice())
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}
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