golang判断结构体是否实现了某个接口

判断结构体是否实现了某个接口

package main

import (
	"fmt"
	"reflect"
)

type Dark interface {
	Run(string)
	Speak(string) string
}
type bird struct {
}
type chick struct {
}

func (c *chick) Run(msg string) {
	(msg)
}

func (c *chick) Speak() string {
	return ""
}

func (b *bird) Run(msg string) {
	(msg)
}
func (b *bird) Speak(string) string {
	return ""
}

var (
	//判断结构体bird是否实现了Dark接口
	_ Dark = (*bird)(nil) //把nil转化成*bird类型 赋值后即丢弃
	_ Dark = (*chick)(nil)//没有实现所有方法，所有编译报错
)

func main() {
	var bird Dark = (*bird)(nil)
	var chick Dark = (*chick)(nil)
	((bird), (chick))
}