枚举

package main

import "fmt"

type Sex int

// 枚举
const (
	SexMan Sex = iota
	SexWoman
	SexUnkonw
)

func (s Sex) String() string{
	switch s {
	case 0:
		return "男"
	case 1:
		return "女"
	default:
		return "未知"
	}

}

func main(){
	fmt.Println(SexMan)
}