golang interface接口类型

1、结构体实现接口

package main

import "fmt"

type Inter interface {
	run()
}

type todo struct {
	name string
	Inter
}

func (t *todo) run() {
	fmt.Println("run")
	fmt.Println(t.name)
}

func main() {
	var in Inter = &todo{
		name: "name",
	}

	in.run()
}

go run test2.go
run
name

2、基本接口实现调用结构体

package main

import "fmt"

type Inter interface {
	run(map[string]string)
}

type car string

func (c *car) run(m map[string]string) {
	fmt.Println(m)
}

func handlers(m map[string]string, h Inter) {
	if m != nil && len(m) > 1 {
		h.run(m)
	}

}

func main() {
	persons := map[string]string{
		"bm":  "bm",
		"bc":  "bc",
		"vev": "vev",
	}

	var c *car
	handlers(persons, c)

}

3、改变方法名，隐藏实现细节

package main

import "fmt"

type Inter interface {
	Run(map[string]string)
}
type handFunc func(map[string]string)

func (h handFunc) Run(m map[string]string) {
	h(m)
}

//转换的函数
func EachFunc(m map[string]string, f func(map[string]string)) {
	Each(m, handFunc(f))
}

//调用函数
func Each(m map[string]string, f Inter) {
	if m != nil && len(m) > 0 {
		f.Run(m)
	}
}
func PrintInfo(m map[string]string) {
	fmt.Println(m)
}
func main() {
	person := make(map[string]string)
	person["bm"] = "bm"
	person["bc"] = "bc"
	person["vev"] = "vev"
	EachFunc(person, PrintInfo)
}