【寒江雪】Go实现单例模式

Singleton Pattern

实现

单例定义

package singleton

type singleton map[string]string

var (
once sync.Once

instance singleton
)

func New() singleton {
once.Do(func() {
instance = make(singleton)
})

return instance
}

使用

func main(){
instance_1 := singleton.GetInstance()
instance_1["this"]="that"

instance_2 := singleton.GetInstance()
s := instance_2["this"]
fmt.Println(s)
}