【golang笔记】go_映射map(11)

package main

import "fmt"

func main() {
 //声明
 var mapAge map[string]int
 mapAge = make(map[string]int, 2)
 mapAge["ZhangSan"] = 19
 mapAge["LiSi"] = 20
 mapAge["XiaoHong"] = 21

 fmt.Println(mapAge) //map[LiSi:20 XiaoHong:21 ZhangSan:19]

 //修改
 mapAge["ZhangSan"] = 30
 fmt.Println(mapAge) //map[LiSi:20 XiaoHong:21 ZhangSan:30]

 //删除
 delete(mapAge, "ZhangSan")
 fmt.Println(mapAge) //map[LiSi:20 XiaoHong:21]

 mAge := make(map[string]int)
 mAge["XiaoMing"] = 20
 mAge["LaoZhang"] = 30
 fmt.Println(mAge) //map[LaoZhang:30 XiaoMing:20]
}