Go 通过 map 实现 set

set

mapset

package main

import "fmt"

func main() {
    hashSet := make(map[string]struct{})
    data := []string{"Hello", "World", "213", "3213", "213", "World"}
    for _, v := range data {
        hashSet[v] = struct{}{}
    }
    for k, _ := range hashSet {
        fmt.Println(k)
    }
}

输出结果为：

Hello
World
213
3213