golang 中的多态用法

package main

import "fmt"

/**
*多态用法
*/
type Draw interface{
Paint()
}

type Circular struct{
Name string
}

type Triangular struct{
Name string
}

func (c *Circular) Paint(){
fmt.Println("c:",c.Name)
}

func (t *Triangular) Paint(){
fmt.Println("t:",t.Name)
}

func main(){
var  draw Draw

draw = &Circular{"画一个圆形"}
draw.Paint()
draw = &Triangular{"画一个三角形"}
draw.Paint()
}