array_change_key_case.go

package main

import (
	"fmt"
	"reflect"
	"strings"
)

/**
 *https://secure.php.net/manual/zh/function.array-change-key-case.php
 *array_change_key_case — 将数组中的所有键名修改为全大写或小写
 *go的数组没有键值 按照map来写 (后面所有情况都按照此情况处理)
 */
const CASE_UPPER = 0 //大写
const CASE_LOWER = 1 //小写 默认

func main() {
	m := make(map[interface{}]interface{})
	m["Name"] = "fengahan"
	m["job"] = "coder"
	m[10] = "age"

	new_map := array_change_key_case(m, CASE_LOWER)
	fmt.Println(new_map)
}
func array_change_key_case(m map[interface{}]interface{}, Do int) interface{} {
	//判断是不是字符串
	new_map := make(map[interface{}]interface{})
	key := ""
	for k, v := range m {
		ty := reflect.TypeOf(k)
		k_temp := reflect.ValueOf(k)
		if ty.String() == "string" { //如果是字符串则转换 否则为其他按照原来的返回
			if Do == CASE_LOWER {
				key = strings.ToLower(k_temp.String())
			} else if Do == CASE_UPPER {
				key = strings.ToUpper(k_temp.String())
			} else {
				panic("转换的格式错误")
			}
		} else {
			key = k_temp.String()
		}
		new_map[key] = v
	}
	return new_map
}