https://before80.github.io/prgms/Rust/ref/statements-and-expressions/Recent content in 第8章 语句与表达式 on 编程那些事儿Hugozh-cnFri, 21 Aug 2026 22:34:20 +0800https://before80.github.io/prgms/Rust/ref/statements-and-expressions/01-statements/Tue, 18 Aug 2026 08:45:00 +0800https://before80.github.io/prgms/Rust/ref/statements-and-expressions/01-statements/<blockquote> <p>译文 · 基于 <a href="https://doc.rust-lang.org/reference/">The Rust Reference</a></p> </blockquote> <blockquote> <p>原文链接: <a href="https://doc.rust-lang.org/reference/statements.html">https://doc.rust-lang.org/reference/statements.html</a></p> </blockquote> <p>r[statement]</p> <h1 id="语句">语句</h1> <p>r[statement.syntax]</p> <pre tabindex="0"><code class="language-grammar,statements" data-lang="grammar,statements">Statement -&gt; `;` | Item | LetStatement | ExpressionStatement | OuterAttribute* MacroInvocationSemi </code></pre><p>r[statement.intro] <em>语句</em>是<a href="expressions/block-expr.md">块</a>的组成部分，而块又是外层<a href="expressions.md">表达式</a>或<a href="items/functions.md">函数</a>的组成部分。</p> <p>r[statement.kind] Rust 有两类语句：<a href="#declaration-statements">声明语句</a>与<a href="#expression-statements">表达式语句</a>。</p> <p>r[statement.decl]</p> <h2 id="声明语句">声明语句</h2> <p><em>声明语句</em>会向包围它的语句块中引入一个或多个<em>名字</em>。所声明的名字可以表示新变量或新的<a href="items.md">项</a>。</p>