https://before80.github.io/prgms/Rust/comprehensiveRust/day3-afternoon/borrowing/interior-mutability/Recent content in 2.4 内部可变性 on 编程那些事儿Hugozh-cnTue, 11 Aug 2026 23:57:44 +0800https://before80.github.io/prgms/Rust/comprehensiveRust/day3-afternoon/borrowing/interior-mutability/01-cell/Tue, 11 Aug 2026 11:30:00 +0800https://before80.github.io/prgms/Rust/comprehensiveRust/day3-afternoon/borrowing/interior-mutability/01-cell/<blockquote> <p>译文 · 基于 <a href="https://google.github.io/comprehensive-rust/">Comprehensive Rust</a></p> </blockquote> <blockquote> <p>原文链接: <a href="https://google.github.io/comprehensive-rust/borrowing/interior-mutability/cell.html">https://google.github.io/comprehensive-rust/borrowing/interior-mutability/cell.html</a></p> </blockquote> <h1 id="241-cell">2.4.1 <code>Cell</code></h1> <p><code>Cell</code> 包装一个值，并允许仅通过指向 <code>Cell</code> 的共享引用来获取或设置该值。但它不允许任何指向内部值的引用。由于没有引用，借用规则也就无法被破坏。</p>https://before80.github.io/prgms/Rust/comprehensiveRust/day3-afternoon/borrowing/interior-mutability/02-refcell/Tue, 11 Aug 2026 11:30:00 +0800https://before80.github.io/prgms/Rust/comprehensiveRust/day3-afternoon/borrowing/interior-mutability/02-refcell/<blockquote> <p>译文 · 基于 <a href="https://google.github.io/comprehensive-rust/">Comprehensive Rust</a></p> </blockquote> <blockquote> <p>原文链接: <a href="https://google.github.io/comprehensive-rust/borrowing/interior-mutability/refcell.html">https://google.github.io/comprehensive-rust/borrowing/interior-mutability/refcell.html</a></p> </blockquote> <h1 id="242-refcell">2.4.2 <code>RefCell</code></h1> <p><code>RefCell</code> 允许访问并修改被包装的值，方式是提供模拟 <code>&amp;T</code>/<code>&amp;mut T</code>、但并非真正 Rust 引用的替代类型 <code>Ref</code> 与 <code>RefMut</code>。</p> <p>这些类型使用 <code>RefCell</code> 中的计数器进行动态检查，防止 <code>RefMut</code> 与另一个 <code>Ref</code>/<code>RefMut</code> 同时存在。</p>