Go (interface)接口

// interface.go
package main

import (
	"fmt"
)

type Phone interface {
	call()
}

type NokiaPhone struct {
}

type IPhone struct {
}

type Android struct {
}

func (nokia NokiaPhone) call() {
	fmt.Println("I am Nokia!")
}

func (ios IPhone) call() {
	fmt.Println("I am IPhone!")
}

func (and Android) call() {
	fmt.Println("I am Android!")
}

func main() {
	var phone Phone

	phone = new(NokiaPhone)
	phone.call()

	phone = new(IPhone)
	phone.call()

	phone = new(Android)
	phone.call()
}

输出结果:

I am Nokia!
I am IPhone!
I am Android!

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