Tobey's Notes

golang接口型函数详解

golang go
字数统计: 217阅读时长: 1 min
2018/11/14 Share

实例1

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package main

import (
    "fmt"
)

type Handler interface {
    Do(k, v interface{})
}

type HandlerFunc func(k, v interface{})

func (f HandlerFunc) Do(k, v interface{}) {
    f(k, v)
}

func Each(m map[interface{}]interface{}, h Handler) {
    if m != nil && len(m) > 0 {
        for k, v := range m {
            h.Do(k, v)
        }
    }
}

func EachFunc(m map[interface{}]interface{}, f func(k, v interface{})) {
    Each(m, HandlerFunc(f))
}

func selfInfo(k, v interface{}) {
    fmt.Printf("大家好,我叫%s,今年%d岁\n", k, v)
}

func main() {
    persons := make(map[interface{}]interface{})
    persons["张三"] = 20
    persons["李四"] = 23
    persons["王五"] = 26

    EachFunc(persons, selfInfo)

}

实例2

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package main
import "fmt"

type Back interface {
	backcall(int)
}

type wwjdbfun func(int) int

func (w wwjdbfun) backcall(n int) {
	fmt.Println("backcall:", n)
	w(n + 1)
}

func runfun(n int) int {
	fmt.Println("wwjdbfun run1:", n)
	return 1
}

func main()  {
  w := wwjdbfun(runfun)
  w.backcall(10)
}

转载自: Golang必备技巧：接口型函数

原文作者：Tobey

原文链接：http://xiangyu123.github.io/2018/11/14/golang-interface-function/

发表日期：November 14th 2018, 11:20:09 am

更新日期：November 14th 2018, 11:36:53 am

版权声明：本文采用知识共享署名-非商业性使用 4.0 国际许可协议进行许可

CATALOG
  1. 1. 实例1
  2. 2. 实例2
Total : 7
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