Pitfall on rustbiteshttps://www.rustbites.com/tags/pitfall/Recent content in Pitfall on rustbitesHugoenMon, 20 Jul 2026 22:04:45 +0200268. fs::read_dir — The Filesystem Doesn't Sort for Youhttps://www.rustbites.com/posts/bite-268/Sun, 19 Jul 2026 09:00:00 +0100https://www.rustbites.com/posts/bite-268/<p><code>fs::read_dir</code> looks like <code>ls</code>, but <code>ls</code> sorts its output and <code>read_dir</code> doesn&rsquo;t. You get entries in whatever order the filesystem feels like — and that order changes between machines.</p>265. Path::strip_prefix — Compare Paths by Component, Not by Characterhttps://www.rustbites.com/posts/bite-265/Fri, 17 Jul 2026 17:00:00 +0100https://www.rustbites.com/posts/bite-265/<p>Checking <code>path_str.starts_with(&quot;/srv/uploads&quot;)</code> says yes to <code>/srv/uploads-old</code> too. Paths need component-wise comparison — and <code>Path</code> has it built in.</p>264. Path::join — One Absolute Path and Your Base Directory Is Gonehttps://www.rustbites.com/posts/bite-264/Fri, 17 Jul 2026 09:00:00 +0100https://www.rustbites.com/posts/bite-264/<p><code>base.join(user_input)</code> looks like it appends. But if the input starts with <code>/</code>, <code>join</code> silently throws your base away and returns the input alone.</p>