package lc import ( "fmt" ) // Loudspeaker 扬声器接口 type Loudspeaker interface { Speak() } type IpCast struct { } func NewIpCast() *IpCast { return &IpCast{} } func (ip IpCast) Speak() { fmt.Println("来车了来车了!") } //func (ip IpCast) CorrectTime() {} //func (ip IpCast)Reconnect(){}