# 字串常用函式

package main

import (
	"fmt"
	"strconv"
	"strings"
)

func main() {
	//是否包含子串
	fmt.Println(strings.Contains("hellogo","go"))		//true

	//切片連成字串
	s := []string{"aa","bb","cc"}
	fmt.Println(strings.Join(s,"@"))						//[email protected]@cc

	//查詢子串位置
	fmt.Println(strings.Index("hellogo","go"))		//5
	fmt.Println(strings.Index("hellogo","goo"))		//-1

	//重複出現
	fmt.Println(strings.Repeat("go",3))				//gogogo

	//分隔
	ss := strings.Split("aa,bb,cc",",")
	fmt.Println(ss)												//[aa bb cc]

	//去掉兩頭指定字串
	fmt.Println(strings.Trim(" aa bb  "," "))			//aa bb

	//按空格分割
	ss = strings.Fields(" aa bb  cc   ")
	fmt.Println(ss)

	test()
}


func test(){
	slice := make([]byte,0,1024)
	slice = strconv.AppendBool(slice,true)
	slice = strconv.AppendInt(slice,314,10)		//十進位制方式
	slice = strconv.AppendQuote(slice,"aaaaaa")
	fmt.Println(string(slice))		//true314"aaaaaa"

	//其它型別轉化為字串
	str := strconv.FormatInt(100,16)
	fmt.Println(str)				//64   16進位制
	fmt.Println(strconv.Itoa(999))
	str = strconv.FormatFloat(3.1415,'f',-1,64)
	fmt.Println(str)

	//字串轉化為其它型別
	flg,_ := strconv.ParseBool("true")
	fmt.Printf("%T %v \n",flg,flg)
	a,err := strconv.Atoi("100")
	fmt.Println(a,err)
}