https://www.ithome.me/tags/%E5%87%BD%E6%95%B0%E8%AE%BE%E8%AE%A1/ Recent content in 函数设计 on 编程心语 Hugo zh-CN Tue, 04 Aug 2026 14:59:27 +0800 https://www.ithome.me/post/2026/07/16/boolean-parameter-smell/ Thu, 16 Jul 2026 08:00:00 +0800 https://www.ithome.me/post/2026/07/16/boolean-parameter-smell/ <h2 id="一个-true-引发的血案">一个 true 引发的血案</h2> <p>你一定见过这样的代码：</p> <div class="highlight"><div class="chroma"> <table class="lntable"><tr><td class="lntd"> <pre tabindex="0" class="chroma"><code><span class="lnt">1 </span></code></pre></td> <td class="lntd"> <pre tabindex="0" class="chroma"><code class="language-go" data-lang="go"><span class="line"><span class="cl"><span class="nf">processOrder</span><span class="p">(</span><span class="nx">order</span><span class="p">,</span><span class="w"> </span><span class="kc">true</span><span class="p">)</span><span class="w"> </span></span></span></code></pre></td></tr></table> </div> </div><p>第一次看到这行代码时，你的脑子里会冒出一个问号：<strong>那个 <code>true</code> 是什么意思？</strong> 是跳过校验？是异步执行？还是发送通知？不看函数定义根本猜不出来。</p>