go的strings，strconv

package main

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

func main() {
    var str = `
        牀前明月光，
        疑是地上霜。
    `
    fmt.Println(str)

    var a = "66666"
    fmt.Println(a)

    fmt.Println(strings.Fields("abc def ghi"))
    //替換兩邊的a(能夠是連續多個a)
    fmt.Println(strings.Trim("aabbaabcbbaa","a"))
    //替換全部a，b
    fmt.Println(strings.Trim("abbaabcbba","ab"))
    //替換左邊的ab(能夠是連續多個a或b)
    fmt.Println(strings.TrimLeft("abbaabcbba","ab"))
    //替換右邊的ab(能夠是連續多個a或b)
    fmt.Println(strings.TrimRight("abbaabcbba","ab"))
    fmt.Println(strings.Split("ab,ba,ab,cb,ba",","))
    fmt.Println(strings.Join([]string{"ab", "ba", "ab", "cb", "ba"},","))
    fmt.Println(strings.Repeat("A", 6))
    //-1替換全部，0不替換，大於零的整數n爲前n個
    fmt.Println(strings.Replace("aabbccddeeaabb","a", "*", 0))
    //字符串出現的次數
    fmt.Println(strings.Count("abcdabefab", "ab"))
    fmt.Println(strings.ToLower("ABC"))
    fmt.Println(strings.ToUpper("abc"))

    //整數轉換字符轉
    fmt.Println(strconv.Itoa(1))
    //字符串轉換整數（返回兩個值：轉換後的值和錯誤）
    fmt.Println(strconv.Atoi("666"))
}

輸出：

牀前明月光，
    疑是地上霜。

66666
[abc def ghi]
bbaabcbb
c
cbba
abbaabc
[ab ba ab cb ba]
ab,ba,ab,cb,ba
AAAAAA
aabbccddeeaabb
3
abc
ABC
1
666 <nil>

Process finished with exit code 0