Go-复习-方法receiver

package main

import (
   "fmt"
)

type Ball struct {
   Name string
}

func (b *Ball) Ping() {
   fmt.Printf("Ping ,%p\n", b)
   b.Name=b.Name+"Ping"
}

func (b Ball) Pong() {
   fmt.Printf("Pong ,%p\n", &b)
   b.Name=b.Name+"Pong"
}

func main() {
   v := Ball{}
   v.Name = "wjc"
   fmt.Printf("v ,%p\n", &v)
   v.Ping()
   v.Pong()
   fmt.Println(v.Name)

   v1 := new(Ball)
   v1.Name = "kelvin"
   fmt.Printf("v1 ,%p\n", v1)
   v1.Ping()
   v1.Pong()
   fmt.Println(v1.Name)
}

输出：

v ,0xc0000301f0
Ping ,0xc0000301f0
Pong ,0xc000030200
wjcPing
v1 ,0xc000030220
Ping ,0xc000030220
Pong ,0xc000030230
kelvinPing

所以：

struct 的实例和实例指针都可以调用值类型和指针类型 receiver 的方法。调用指针类型receiver的方法时，相当于传引用。值接受者，编译器copy一份

标签：Ball,Name,fmt,Ping,v1,receiver,Go,Pong,复习
来源： https://www.cnblogs.com/wanjch/p/11549701.html