[Go] 利用函数类型实现封装中的回调

package main

import "log"

func main() {
    c := NewConn(callback, callback2)
    c.Start()
}

//在当前模块定义的回调函数
func callback() {
    log.Println("i am callback")
}
func callback2(name string) string {
    log.Println("i am callback2 ", name)
    return "hello"
}

package main
type Connection struct{
    handleFunc func()
    handleFunc2 func(name string)string
}
//把被回调函数注册进了封装类的属性中
func NewConn(callback func(),callback2 func(name string)string) *Connection{
    c:=&Connection{
        handleFunc: callback,
        handleFunc2: callback2,
    }
    return c
}
//在进行某些业务时也把回调函数执行了
func (c *Connection)Start(){
    c.handleFunc()
    c.handleFunc2("taoshihan")
}