blocks|key|159351|text|锈蚀会自动删除指定的空格，因为长字符串通常被分割成这样的多行，而空格只是为了格式化目的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|159352|您可以使用原始字符串禁用此行为。请注意开头和结尾处的额外r和自定义分隔符#。|offset|length|style|CODE|159353|const+NON_WORKING:+&str+=+r#"
++╷+
++│+
╶─┼╴
++│+
╶─┼╴
╶─┼╴
++│+
++╵+
"#;|code-block|syntax|javascript|159354|entityMap|0|LINK|mutability|MUTABLE|url|https://doc.rust-lang.org/reference/tokens.html#raw-string-literals^0|0|S|1|10|1|5|5|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@$D|W|E|X|F|G]|$D|Y|E|Z|F|G]]|9|@$D|10|E|11|1|12]]|A|$]]|$1|H|3|I|5|J|7|13|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Rust will automatically remove intended whitespace, as long strings are usually broken into multiple lines like this, with the whitespace being just for formatting purposes.
You can use <a href="https://doc.rust-lang.org/reference/tokens.html#raw-string-literals" rel="nofollow noreferrer">raw strings</a> to disable this behavior. Notice the extra <code>r</code> and the custom delimiter <code>#</code> at the start and end.
<pre><code>const NON_WORKING: &amp;str = r#&quot;
 ╷ 
 │ 
╶─┼╴
 │ 
╶─┼╴
╶─┼╴
 │ 
 ╵ 
&quot;#;
</code></pre>

blocks|key|2031166|text|我自己也没有尝试过，但我听说板条箱旨在帮助编写包含缩进的多行字符串文字。它平等地从所有行中删除前导空格，而不是\独立地从每一行中删除前导空格的行为。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2031167|使用indoc
使用indoc::indoc；fn+main()+{+let+testing+=+indoc！{“def+hello()：print('Hello，world!')+hello()+"}；let期望值=”def+hello():\n+print('Hello，world！‘)\n\n+Hello()\n+assert_eq！(预期测试)；}|blockquote|2031168|entityMap|0|LINK|mutability|MUTABLE|url|https://crates.io/crates/indoc^0|1J|1|E|3|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@$9|T|A|U|1|V]]|E|$]]|$1|F|3|G|5|H|7|W|8|@]|D|@]|E|$]]|$1|I|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|J|$K|$5|L|M|N|E|$O|P]]]]

I haven't tried it myself, but I've heard <a href="https://crates.io/crates/indoc" rel="nofollow noreferrer">the <code>indoc</code> crate</a> is intended to help write multiline string literals containing indentation. It removes leading whitespace equally from all lines, rather than <code>\</code>'s behavior of removing leading whitespace from each line independently.
<blockquote>
<h3>Using indoc</h3>
<pre class="lang-rust prettyprint-override"><code>use indoc::indoc;

fn main() {
 let testing = indoc! {&quot;
 def hello():
 print('Hello, world!')

 hello()
 &quot;};
 let expected = &quot;def hello():\n print('Hello, world!')\n\nhello()\n&quot;;
 assert_eq!(testing, expected);
}
</code></pre>
</blockquote>

blocks|key|2031185|text|最后，我使用了简单的str并删除了初始的\n。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2031186|let+WORKING:+&str+="
+──+
++++
+──+
++++
+──+
+──+
++++
+──+".trim_start_matches("\n")|code-block|syntax|javascript|2031187|entityMap^0|K|2|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

I finally used plain str and removed the initial <code>\n</code>:
<pre class="lang-rust prettyprint-override"><code>let WORKING: &amp;str =&quot;
 ── 
 
 ── 
 
 ── 
 ── 
 
 ── &quot;.trim_start_matches(&quot;\n&quot;)
</code></pre>

I have some multiline strings with intended whitespace. For some of those, some whitespace is removed:
<pre class="lang-rust prettyprint-override"><code>const WORKING: &amp;str = &quot;\
┌─┬┐
│ ││
╞═╪╡
│ ││
├─┼┤
├─┼┤
│ ││
└─┴┘
&quot;;

const NON_WORKING: &amp;str = &quot;\
 ╷ 
 │ 
╶─┼╴
 │ 
╶─┼╴
╶─┼╴
 │ 
 ╵ 
&quot;;

pub fn main() {
 println!(&quot;{}&quot;, WORKING);
 println!(&quot;{}&quot;, NON_WORKING);
}
</code></pre>
It removes some whitespace at the beginning of the line in the non-working one. Printing:
<pre><code>╷ 
 │ 
╶─┼╴
 │ 
╶─┼╴
╶─┼╴
 │ 
 ╵ 
</code></pre>
I think it has to deal with the use of <code>\</code> but I don't know how to solve it without starting the line after the <code>&quot;</code>
<a href="https://play.rust-lang.org/?version=stable&amp;mode=debug&amp;edition=2018&amp;gist=c18cd59d7743e4ece12336d31fcbf33e" rel="nofollow noreferrer">Playground</a>

Why do multiline strings skip intended whitespace at the beginning?

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

我有一些带有指定空格的多行字符串。对于其中一些，删除了一些空白：const WORKING: &str = "\┌─┬┐│ ││╞═╪╡│ ││├─┼┤├─┼┤│ ││└─┴┘";const NON_WORKING: &str = "\  ╷   │ ╶─┼╴  │ ╶─┼╴╶─┼╴  │   ╵ ";pub fn m...

问为什么多行字符串在开头跳过预期的空格？
EN

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

问为什么多行字符串在开头跳过预期的空格？EN