go 设计模式——单例模式

package design

import (
"fmt"
"sync"
)

type singleTon struct {
}

func (s *singleTon) Show() {
fmt.Println("hello world")
}

var (
once sync.Once
single *singleTon
)

func GetSingleInstance() *singleTon {
once.Do(func() {
single = &singleTon{}
})
return single
}

Go设计模式(6)-单例模式 - 墨天轮