充电时间 Go中的数组、切片、map简单示例

数组是固定长度的，依稀让我想起了VB；切片是动态的；map一般是键值对

package main

import (
	"fmt"
)

func main() {

	var username string

	fmt.Println(username)

	username = "abc"

	fmt.Println(username)

	//array
	names := [2]string{"a", "b"}

	fmt.Println(names)

	//slice
	names2 := [...]string{1: "Jan", 2: "Feb"}
	fmt.Println(names2)

	//map
	ages := map[string]int{
		"jimmy": 31,
		"tom":   32,
	}
	ages["lily"] = 18

	fmt.Println(ages)

	ages["lucy"] += 10

	fmt.Println(ages)

}