3-3 string包

func main() {

    //检索子串
    //是否包含子串 返回true或false
    fmt.Println(strings.Contains("hello", "el"))
    fmt.Println(strings.Contains("hello", "anso"))

    //包含任意一个字符
    fmt.Println(strings.ContainsAny("hello", "asshole"))
    fmt.Println(strings.ContainsAny("hello", "ass"))

    //以字符集序号和字符形式显示
    fmt.Printf("%U\n", 'h')
    fmt.Printf("%c\n", 0x6211)

    //判断是否包含任意字符
    fmt.Println(strings.ContainsRune("hello", 'h'))

    //返回后面的字符串在前面字符串所属的位置    从序号0开始，没有返回-1
    fmt.Println(strings.Index("fuckoff","fuck"))
    fmt.Println(strings.Index("fuckoff","off"))
    fmt.Println(strings.Index("fuckoff","shit"))

    //返回后面任一字符在前面字符串所在的位置
    fmt.Println(strings.IndexAny("fuckoff","ashole"))
    fmt.Println(strings.IndexRune("fuckoff",0x6211))
    fmt.Println(strings.IndexRune("fuck我off",0x6211))
}

格式化和裁剪

func main() {

    //字符串格式化
    fmt.Println(strings.ToUpper("Hello"))     //HELLO  转换为大写
    fmt.Println(strings.ToLower("Hello"))    //hello      转换为小写
    fmt.Println(strings.Title("hello"))       //Hello     首字母大写

    //比较大写
    fmt.Println(strings.Compare("mfuck","zshit"))     //后面大返回-1
    fmt.Println(strings.Compare("mfuck","ashit"))     //前面大返回1
    fmt.Println(strings.Compare("mfuck","mfuck"))        //一样大返回0，如果前面的字符相同，会比较后面字符的大小

    //裁剪

    //去掉头尾的空格
    fmt.Println(strings.TrimSpace("  fuck  you  fuck me  "))

    //去掉前缀
    fmt.Println(strings.TrimPrefix("和： fuckyoufuckme","和： "))
    //去掉后缀
    fmt.Println(strings.TrimSuffix("和： fuckyoufuckme ohhh"," ohhh"))

    //在s中 去掉cutset包含的字符
    fmt.Println(strings.Trim("fuckyoufuckme","fuck"))

    //去掉左边的fuck字符
    fmt.Println(strings.TrimLeft("fuckyoufuckme","fuck"))
    //去掉右边的fuck字符
    fmt.Println(strings.TrimRight("fuckyoufuckme","fuck"))

    //使用trimfunc自定义裁剪规则
    fmt.Println(strings.TrimFunc("fuckyoufuckme",filter))
    
    //封装为匿名函数
    fmt.Println(strings.TrimFunc("fuckyoufuckme", func(char rune) bool {
        if char == 'f' ||char =='u'{
            return true
        }else {
            return false
        }
    }))

}

//如果字符等于f或u 返回true，裁剪掉
func filter(char rune)bool  {
    if char == 'f'|| char =='u'{
        return  true
    }else {
        return false
    }
}

分割和拼接

//切割
func main() {

    //以空格为分隔符
    strs := strings.Split("fuck you fuck me", " ")
    fmt.Println(len(strs),strs)

    //切割为N段，N=-1时有多碎炸多碎。
    strs = strings.SplitN("fuck you fuck me", " ", -1)
    for _ ,s := range strs{
        fmt.Println(s)
    }

    //SplitAfter 将分隔符自己也带进去
    strs = strings.SplitAfter("fuck, you, fuck, me", ",")
    fmt.Println(strs)
    strs = strings.SplitAfterN("fuck, you, fuck, me", ",",2)
    fmt.Println(strs)

    //拼接
    bigStr := strings.Join([]string{"fuck", "sep", "asshoe"}, "❥(^_-)")
    fmt.Println(bigStr)
}

执行结果

标签：字符,string,strs,fmt,fuck,Println,strings
来源： https://www.cnblogs.com/paad/p/11060620.html