go字符串数组以及字符串处理集合

青旅半醒 2022-11-11 05:18 210阅读 0赞

package main
    
    import (
        "fmt"
        "strconv"
        "path"
        "strings")
    func main(){
       k :="1,2,3,"
       k = strings.TrimSuffix(k,",")  //修剪后缀  "1,2,3"
       k = strings.TrimPrefix(k,"1,")  // 修剪前缀 "2,3“
       strArr := strings.Split(k, `,`)  //分隔成数组 [2 3]
       fmt.Println(k,strArr,strings.Index(k,",")) //strings.Index 查找字符串首次出现的位置，不包含返回-1，包含返回首次出现的位置
       m :="test_user"
       id :="4"
       sql :=fmt.Sprintf("DELETE from %s WHERE id IN (%s)",m,k)
       fmt.Println(strings.Index(k,","),strings.Index(id,","),sql)
       //DB.Exec(sql) //mysql执行原生sql
       num,_ :=strconv.Atoi(id)//字符串转整
       numStr := strconv.Itoa(num)//整数转字符串
       fmt.Println(num,numStr)
       k = "1,2,3,4,5,6,7,8,9,10,11,12"
       kNew := strings.Replace(k,",","|",5) //替换指定次数字符串 1|2|3|4|5|6,7,8,9,10,11,12
       kNew = strings.ReplaceAll(k,",","|") //替换全部字符串 1|2|3|4|5|6|7|8|9|10|11|12
       kNew =kNew+" this is test !"
       fmt.Println(strings.TrimSpace(kNew)) 
    
         scopes := []string{"name1","name2","name3"}
        if in("name1",scopes) == true{
            fmt.Println("存在")
        }else{
            fmt.Println("不存在")
        }
        fmt.Println(getFileName("https://tx2.a.yximgs.com/uhead/AB/2018/12/25/15/BMjAxODEyMjUxNTA1MzBfMTAwMjIwMDQzN18xX2hkMjE0XzczMA==_s.jpg"))
         //BMjAxODEyMjUxNTA1MzBfMTAwMjIwMDQzN18xX2hkMjE0XzczMA==
    }
    /*遍历判断字符串在数组中存在*/
    func in(target string, str_array []string) bool {
        for _, element := range str_array{
            if target == element{
                return true
            }
        }
        return false
    }
    /*提取url路径中想要的文件名*/
    func getFileName(fullFilename string) string  {
        var filename string
        filename = path.Base(fullFilename)/*文件名 xxx.html*/
        filenameLen :=strings.Index(filename, "==") /*==出现在开始位置*/
        filename =filename[:filenameLen+2]/*提取包含==之前的内容*/
        return  filename
    }