golang继承多态

package main

import "fmt"

type Person struct {	//爹
	id   int
	name string
	age  int
}

// 定义结构体类型 (子类)
type Student struct {
	Person // 匿名字段实现继承 (结构体嵌套结构体)
	//p Person  // 也可以为结构体Person起别名
	score int
}

func main() {
	p1 := Person{
		id:   1,
		name: "haha",
		age:  10,
	}
	stu := Student{
		score:  123,
		Person: p1,
	}
	fmt.Printf("%+v\n", stu)
	fmt.Println(stu.name)
	fmt.Println(stu.age)
	fmt.Println(stu.Person.name)
}


/*
{Person:{id:1 name:haha age:10} score:123}
haha
10
haha

*/

单实例绑定

package main

import (
	"log"
)

type cat struct {			//爹
	name string
	age  int
}
type dog struct {
	name string
	aget int
}
type tomcat struct {		//儿子
	tomcatid int
	cat
}

// 给Person结构体绑定一个BigHello
func (p cat) BigHello() {
	log.Printf("[tomcat.BigHello][name:%+v]", p)
}

func main() {
	c1 := cat{
		name: "tom",
		age:  3,
	}

	tc1 := tomcat{
		tomcatid: 001,
		cat:      c1,
	}
	tc1.BigHello()

}

// [tomcat.BigHello][name:{name:tom age:3}]

多态灵魂承载容器

package main

import (
	"log"
)

type avicii1 interface {
	avicii()
}
type cat1 struct {
	name string
	age  int
}

func (c *cat1) avicii() {
	log.Printf("[单实例绑定方法][cat.ChangeAge1][p.Age:%v]", c.age)
}

type dog1 struct {
	name string
	age  int
}

//type tomcat struct {
//	tomcatid int
//	cat
//}

func (d dog1) avicii() {
	log.Printf("[单实例绑定方法][Person.ChangeAge2][p.Age:%v]", d.age)
}

func sendcat(n avicii1) {
	n.avicii()
}
func main() {
	c1 := cat1{
		name: "tom",
		age:  3,
	}

	tc1 := dog1{
		name: "datou",
		age:  5,
	}
	// 直接调用结构体绑定的方法
	log.Printf("直接调用结构体绑定的方法")
	c1.avicii()
	tc1.avicii()
	//体现多态
	log.Printf("体现多态")
	sendcat(&c1)
	sendcat(tc1)
	//灵魂
	log.Printf("多态灵魂承载容器")
	ns := make([]avicii1, 0)
	ns = append(ns, &c1)
	ns = append(ns, tc1)
	for _, n := range ns {
		n.avicii()
	}
}

/*
2022/07/07 16:53:32 直接调用结构体绑定的方法
2022/07/07 16:53:32 [单实例绑定方法][cat.ChangeAge1][p.Age:3]
2022/07/07 16:53:32 [单实例绑定方法][Person.ChangeAge2][p.Age:5]
2022/07/07 16:53:32 体现多态
2022/07/07 16:53:32 [单实例绑定方法][cat.ChangeAge1][p.Age:3]
2022/07/07 16:53:32 [单实例绑定方法][Person.ChangeAge2][p.Age:5]
2022/07/07 16:53:32 多态灵魂承载容器
2022/07/07 16:53:32 [单实例绑定方法][cat.ChangeAge1][p.Age:3]
2022/07/07 16:53:32 [单实例绑定方法][Person.ChangeAge2][p.Age:5]


*/