Golang 基础

通过嵌套接口嵌套结构体实现OOP

package main

import "fmt"

type aaa interface {
	man()
}

type bbb interface {
	women()
}

type tryinter interface {
	aaa
	bbb
}

type People struct {
	name string
	size float64
}

type Gender struct {
	People
	beard bool
	//男: true | 女: false
}

type man struct {
	Gender
	money string
}

func (self man) man() {
	fmt.Println(self.name, self.beard, self.money)
}

func (self Gender) women() {
	fmt.Println(self.name, self.beard)
}

func main() {
	Man := man{Gender{People{"张三 - 男人", 199.01}, true}, "10"}
	Man.man()

	Women := Gender{People{"李四 - 女人", 150.01}, false}
	Women.women()

	// 嵌套接口、嵌套结构体调用
	var inter_Man tryinter
	inter_Man = man{Gender{People{"接口 - 男人", 199.01}, true}, "一个亿"}
	inter_Man.man()
}

接口断言

type jiegou struct{}
func inter_assers(x interface{}) {
	switch v := x.(type) {
	case int:
		fmt.Printf("x是整数，值为: %v\n", v)
	case string:
		fmt.Printf("x是字符串，值为: %v\n", v)
	case bool:
		fmt.Printf("x是布尔，值为: %v\n", v)
	case jiegou:
		fmt.Printf("x是结构体，值为: %v\n", v)
	case *string:
		fmt.Printf("x是指针字符串，值为: %v\n", v)
	default:
		fmt.Println("找不到 type 类型")
	}
}

func main() {
	st := "字符串"
	inter_assers(1)
	inter_assers(st)
	inter_assers(true)
	inter_assers(jiegou{})
	inter_assers(&st)
}