https://stau.space/tags/haskell/Recent content in Haskell on stau.spaceHugoen-USsona@stau.space (Sona Tau Estrada Rivera)sona@stau.space (Sona Tau Estrada Rivera)Sat, 22 Aug 2026 19:58:03 -0400https://stau.space/posts/recursion-schemes/Sat, 22 Aug 2026 19:58:03 -0400sona@stau.space (Sona Tau Estrada Rivera)https://stau.space/posts/recursion-schemes/<p>A nice saturday morning, I&rsquo;m drinking my tea browsing YouTube when a video pops up:</p> <ul> <li><a href="https://youtu.be/1iPWt1gvT_w">Rust and the price of ignoring theory</a>.</li> </ul> <p>Putting to the side that this is probably one of the most well-made commentaries about programming languages I&rsquo;ve ever seen, he mentioned something which threw me into a rabbit hole for the rest of the day and I am now writing this at 7PM on that same Saturday. I&rsquo;m talking about hylomorphisms &ndash; he talks about them at <a href="https://youtu.be/1iPWt1gvT_w?t=387">6:26</a> &ndash; he defines them as follows:</p>