blocks|key|4642159|text|strings.TrimSpace(s)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4642160|例如,|4642161|package+main

import+(
++++"fmt"
++++"strings"
)

func+main()+{
++++s+:=+"\t+Hello,+World\n+"
++++fmt.Printf("%25d+%25q\n",+len(s),+s)
++++t+:=+strings.TrimSpace(s)
++++fmt.Printf("%25d+%25q\n",+len(t),+t)
}|code-block|syntax|javascript|4642162|输出：|4642163|16+"\t+Hello,+World\n+"
12+"Hello,+World"|4642164|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

<h3>strings.TrimSpace(s)</h3>
For example,
<pre><code>package main

import (
 &quot;fmt&quot;
 &quot;strings&quot;
)

func main() {
 s := &quot;\t Hello, World\n &quot;
 fmt.Printf(&quot;%d %q\n&quot;, len(s), s)
 t := strings.TrimSpace(s)
 fmt.Printf(&quot;%d %q\n&quot;, len(t), t)
}
</code></pre>
Output:
<pre><code>16 &quot;\t Hello, World\n &quot;
12 &quot;Hello, World&quot;
</code></pre>

blocks|key|135441|text|在go中有一堆用于裁剪字符串的函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|135442|在那里可以看到它们：Trim|offset|length|135443|下面是一个示例，改编自文档，删除前导空格和尾随空格：|135444|fmt.Printf("[%25q]",+strings.Trim("+Achtung++",+"+"))|code-block|syntax|javascript|135445|entityMap|0|LINK|mutability|MUTABLE|url|http://golang.org/pkg/strings/#Trim^0|0|A|4|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

There's a bunch of functions to trim strings in go.

See them there : <a href="http://golang.org/pkg/strings/#Trim">Trim</a>

Here's an example, adapted from the documentation, removing leading and trailing white spaces :

<pre><code>fmt.Printf("[%q]", strings.Trim(" Achtung ", " "))
</code></pre>

blocks|key|135489|text|为了修剪字符串，Go的“string”包有TrimSpace()，Trim()函数来修剪前导空格和尾随空格。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|135490|有关更多信息，请查看documentation。|135491|entityMap|0|LINK|mutability|MUTABLE|url|https://golang.org/pkg/strings/#Trim^0|L|B|X|6|0|A|D|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@]|D|@$9|V|A|W|1|X]]|E|$]]|$1|H|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

For trimming your string, Go's "strings" package have <code>TrimSpace()</code>, <code>Trim()</code> function that trims leading and trailing spaces.

Check the <a href="https://golang.org/pkg/strings/#Trim" rel="noreferrer">documentation</a> for more information.

blocks|key|135524|text|正如@Kabeer提到的，你可以使用TrimSpace，下面是golang文档中的一个例子：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|135525|package+main

import+(
++++"fmt"
++++"strings"
)

func+main()+{
++++fmt.Println(strings.TrimSpace("+\t\n+Hello,+Gophers+\n\t\r\n"))
}|code-block|syntax|javascript|135526|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Just as @Kabeer has mentioned, you can use TrimSpace and here is an example from golang documentation:

<pre><code>package main

import (
 "fmt"
 "strings"
)

func main() {
 fmt.Println(strings.TrimSpace(" \t\n Hello, Gophers \n\t\r\n"))
}
</code></pre>

blocks|key|135554|text|@peterSO有正确的答案。我在这里添加了更多的示例：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|135555|package+main

import+(
++++"fmt"
++++strings+"strings"
)

func+main()+{+
++++test+:=+"\t+pdftk+2.0.2++\n"
++++result+:=+strings.TrimSpace(test)
++++fmt.Printf("Length+of+%25q+is+%25d\n",+test,+len(test))
++++fmt.Printf("Length+of+%25q+is+%25d\n\n",+result,+len(result))

++++test+=+"\n\r+pdftk+2.0.2+\n\r"
++++result+=+strings.TrimSpace(test)
++++fmt.Printf("Length+of+%25q+is+%25d\n",+test,+len(test))
++++fmt.Printf("Length+of+%25q+is+%25d\n\n",+result,+len(result))

++++test+=+"\n\r\n\r+pdftk+2.0.2+\n\r\n\r"
++++result+=+strings.TrimSpace(test)
++++fmt.Printf("Length+of+%25q+is+%25d\n",+test,+len(test))
++++fmt.Printf("Length+of+%25q+is+%25d\n\n",+result,+len(result))

++++test+=+"\r+pdftk+2.0.2+\r"
++++result+=+strings.TrimSpace(test)
++++fmt.Printf("Length+of+%25q+is+%25d\n",+test,+len(test))
++++fmt.Printf("Length+of+%25q+is+%25d\n\n",+result,+len(result))+++
}|code-block|syntax|javascript|135556|您也可以在Go+lang+playground中找到这一点。|offset|length|135557|entityMap|0|LINK|mutability|MUTABLE|url|https://play.golang.org/p/RFrQCSEiIFi^0|0|0|5|I|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

@peterSO has correct answer. I am adding more examples here:

<pre><code>package main

import (
 "fmt"
 strings "strings"
)

func main() { 
 test := "\t pdftk 2.0.2 \n"
 result := strings.TrimSpace(test)
 fmt.Printf("Length of %q is %d\n", test, len(test))
 fmt.Printf("Length of %q is %d\n\n", result, len(result))

 test = "\n\r pdftk 2.0.2 \n\r"
 result = strings.TrimSpace(test)
 fmt.Printf("Length of %q is %d\n", test, len(test))
 fmt.Printf("Length of %q is %d\n\n", result, len(result))

 test = "\n\r\n\r pdftk 2.0.2 \n\r\n\r"
 result = strings.TrimSpace(test)
 fmt.Printf("Length of %q is %d\n", test, len(test))
 fmt.Printf("Length of %q is %d\n\n", result, len(result))

 test = "\r pdftk 2.0.2 \r"
 result = strings.TrimSpace(test)
 fmt.Printf("Length of %q is %d\n", test, len(test))
 fmt.Printf("Length of %q is %d\n\n", result, len(result)) 
}
</code></pre>

You can find this in <a href="https://play.golang.org/p/RFrQCSEiIFi" rel="nofollow noreferrer">Go lang playground</a> too.

blocks|key|4642320|text|我对性能很感兴趣，所以我做了一个只修剪左侧的比较：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4642321|package+main

import+(
+++"strings"
+++"testing"
)

var+s+=+strings.Repeat("A",+63)+%2B+"B"

func+BenchmarkTrimLeftFunc(b+*testing.B)+{
+++for+n+:=+0;+n+<+b.N;+n%2B%2B+{
++++++_+=+strings.TrimLeftFunc(s,+func(r+rune)+bool+{
+++++++++return+r+==+'A'
++++++})
+++}
}

func+BenchmarkIndexFunc(b+*testing.B)+{
+++for+n+:=+0;+n+<+b.N;+n%2B%2B+{
++++++i+:=+strings.IndexFunc(s,+func(r+rune)+bool+{
+++++++++return+r+!=+'A'
++++++})
++++++_+=+s[i]
+++}
}

func+BenchmarkTrimLeft(b+*testing.B)+{
+++for+n+:=+0;+n+<+b.N;+n%2B%2B+{
++++++_+=+strings.TrimLeft(s,+"A")
+++}
}|code-block|syntax|javascript|4642322|TrimLeftFunc和IndexFunc是一样的，TrimLeft更慢：|offset|length|style|CODE|4642323|BenchmarkTrimLeftFunc-12++++++++10325200+++++++++++++++116.0+ns/op
BenchmarkIndexFunc-12+++++++++++10344336+++++++++++++++116.6+ns/op
BenchmarkTrimLeft-12+++++++++++++6485059+++++++++++++++183.6+ns/op|4642324|entityMap^0|0|0|0|C|D|9|R|8|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]|$I|V|J|W|K|L]|$I|X|J|Y|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|P|$]]

I was interested in performance, so I did a comparison of just trimming the left
side:
<pre><code>package main

import (
 &quot;strings&quot;
 &quot;testing&quot;
)

var s = strings.Repeat(&quot;A&quot;, 63) + &quot;B&quot;

func BenchmarkTrimLeftFunc(b *testing.B) {
 for n := 0; n &lt; b.N; n++ {
 _ = strings.TrimLeftFunc(s, func(r rune) bool {
 return r == 'A'
 })
 }
}

func BenchmarkIndexFunc(b *testing.B) {
 for n := 0; n &lt; b.N; n++ {
 i := strings.IndexFunc(s, func(r rune) bool {
 return r != 'A'
 })
 _ = s[i]
 }
}

func BenchmarkTrimLeft(b *testing.B) {
 for n := 0; n &lt; b.N; n++ {
 _ = strings.TrimLeft(s, &quot;A&quot;)
 }
}
</code></pre>
<code>TrimLeftFunc</code> and <code>IndexFunc</code> are the same, with <code>TrimLeft</code> being slower:
<pre><code>BenchmarkTrimLeftFunc-12 10325200 116.0 ns/op
BenchmarkIndexFunc-12 10344336 116.6 ns/op
BenchmarkTrimLeft-12 6485059 183.6 ns/op
</code></pre>

Which is the effective way to trim the leading and trailing white spaces of string variable in Go?

How to trim leading and trailing white spaces of a string?

5位重磅专家聚焦 AI 时代开发者核心成长需求，带你深入解锁全栈进化、人机协作关键路径！点击报名到场：<a href="https://cloud.tencent.com/developer/salon/salon-2403/signup" target="_blank">https://cloud.tencent.com/developer/salon/salon-2403/signup</a> 
 <img src="https://qcloudimg.tencent-cloud.cn/raw/487c82639d2338df3ef66dfb1450601a.png"/>

腾讯技术创作特训营「年度论坛」正在报名中！

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云智能顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

聚焦“写作效率、视觉美观与运行性能”三方面进行全面升级，为您提供更高效、稳定的创作环境

社区富文本&Markdown编辑器全新改版上线，欢迎大家体验!

诚挚邀请您参与本次调研，分享您的真实使用感受与建议。您的反馈至关重要，感谢您的支持与参与！

社区新版编辑器体验调研

在Go中修剪字符串变量的前导空格和尾随空格的有效方法是什么？

问如何修剪字符串的前导空格和尾随空格？
EN

回答 6

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何修剪字符串的前导空格和尾随空格？EN

回答 6

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何修剪字符串的前导空格和尾随空格？
EN