【GoLang】Map的遍历

package main

import (
	"fmt"
)

func main() {

	//使用for-range遍历map
	cities := make(map[string]string)
	cities["no1"] = "北京"
	cities["no2"] = "天津"
	cities["no3"] = "上海"

	for k, v := range cities {
		fmt.Printf("k=%v v=%v\n", k, v)
	}

	//使用for-range遍历一个结构布局复杂的map
	studentMap := make(map[string]map[string]string)

	studentMap["stu01"] = make(map[string]string)
	studentMap["stu01"]["name"] = "tom"
	studentMap["stu01"]["sex"] = "man"
	studentMap["stu01"]["address"] = "Beijing"

	studentMap["stu02"] = make(map[string]string)
	studentMap["stu02"]["name"] = "marry"
	studentMap["stu02"]["sex"] = "woman"
	studentMap["stu02"]["address"] = "Shanghai"

	//双重for-range
	for k1, v1 := range studentMap {
		fmt.Println("k1=", k1)
		for k2, v2 := range v1 {
			fmt.Printf("\t k2=%v v2=%v\n", k2, v2)
		}
		fmt.Println()
	}
}