string - 如何从 Golang 中的字符串中修剪 "["字符

Question

可能是一件愚蠢的事情，但被卡住了一段时间......

无法从字符串中修剪 "[" 字符，我尝试使用输出:

package main

import (
    "fmt"
    "strings"
)

func main() {
    s := "this[things]I would like to remove"
    t := strings.Trim(s, "[")

    fmt.Printf("%s\n", t)   
}

// output: this[things]I would like to remove

go playground

也尝试了所有这些，但没有成功:

s := "this [ things]I would like to remove"
t := strings.Trim(s, " [ ")
// output: this [ things]I would like to remove


s := "this [ things]I would like to remove"
t := strings.Trim(s, "[")
// output: this [ things]I would like to remove

没有工作。我在这里错过了什么？

Answer 1

您错过了阅读文档。 strings.Trim() :

func Trim(s string, cutset string) string

Trim returns a slice of the string s with all leading and trailing Unicode code points contained in cutset removed.

您输入中的 [ 字符既不在前导也不在尾随位置，它在中间，所以 strings.Trim() - 行为良好 - 不会删除它。

试试 strings.Replace()而是:

s := "this[things]I would like to remove"
t := strings.Replace(s, "[", "", -1)
fmt.Printf("%s\n", t)   

输出(在 Go Playground 上尝试):

thisthings]I would like to remove

还有一个strings.ReplaceAll()在 Go 1.12 中添加(基本上是 Replace(s, old, new, -1) 的“简写”)。