Duck Type In Golang

package main

import "fmt"

type Duck interface {
	Yaya()
}

func DuckSpeak(d Duck) {
	d.Yaya()
}

type Goose struct {
}

func (g Goose) Yaya() {
	fmt.Println("goose ~~~~~")
}

func (g Goose) Swin() {}

type RubberDuck struct{}

func (rd RubberDuck) Yaya() {
	fmt.Println("RubberDuck ~~~~~~")
}

func main() {
	fmt.Println("vim-go")

	var g Goose
	var rd RubberDuck
	DuckSpeak(g)
	DuckSpeak(rd)
}

 

结果

vim-go
goose ~~~~~
RubberDuck ~~~~~~

 

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