golang中接口类型小案例

1.  在项目中实现注册成功之后，向用户发送邮件、微信提醒

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package main   import "fmt"   type IMessage interface {     send() bool }   type Email struct {     email string     content string } func (e *Email) send() bool {     fmt.Println("发送邮件提醒：", e.email, e.content)     return true }   type Wechat struct {     wid int     content string } func (w *Wechat) send() bool {     fmt.Println("发送微信提醒：", w.wid, w.content)     return true }   func DoSomething(messageSlice []IMessage) {     for _, item := range messageSlice {         ret := item.send()         fmt.Println(ret)     } }   func main() {     // 在项目中实现注册成功之后，向用户发送邮件、微信提醒     messageSlice := []IMessage{         &Email{email: "1341935532@qq.com", content: "邮件提醒"},         &Wechat{wid: 110, content: "微信提醒"},     }     DoSomething(messageSlice) }