https://niweea.github.io/categories/rust/Recent content in Rust on Niweea’s BlogHugoenThu, 28 Jan 2021 19:26:32 +0800https://niweea.github.io/posts/rust/grammar/Thu, 28 Jan 2021 19:26:32 +0800https://niweea.github.io/posts/rust/grammar/<p>Rust 语法奇奇怪怪的写法。</p> <h1 id="-操作符-error-propagation" class="relative group"><code>?</code> 操作符 （Error propagation） <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#-%e6%93%8d%e4%bd%9c%e7%ac%a6-error-propagation" aria-label="Anchor">#</a></span></h1><p>函数调用后带 <code>?</code> 什么含义</p>