package main
import (
"fmt"
)
func main() {
user := &User{name: "Chris"}
user.ISubUser = &NormalUser{}
user.sayHi()
user.ISubUser = &ArtisticUser{}
user.sayHi()
}
type ISubUser interface {
sayType()
}
type User struct {
name string
ISubUser
}
func (u *User) sayHi() {
u.sayName()
u.sayType()
}
func (u *User) sayName() {
fmt.Printf("I am %s.", u.name)
}
type NormalUser struct {
}
func (n *NormalUser) sayType() {
fmt.Println("I am a normal user.")
}
type ArtisticUser struct {
}
func (a *ArtisticUser) sayType() {
fmt.Println("I am an artistic user.")
}
//RUN 之后输出：
I am Chris.I am a normal user.
I am Chris.I am a artistic user.
//重用了sayName和sayHi方法，sayType方法可以多态来实现。
