https://macworks.dev/tags/regular-expressions/Recent content in Regular-Expressions on MacWorksHugoenhttps://macworks.dev/docs/archives/simonwillison/simonwillison-2026-05-04/Mon, 01 Jan 0001 00:00:00 +0000https://macworks.dev/docs/archives/simonwillison/simonwillison-2026-05-04/<h1 id="simon-willison--2026-05-04">Simon Willison — 2026-05-04<a class="anchor" href="#simon-willison--2026-05-04">#</a></h1> <h2 id="highlight">Highlight<a class="anchor" href="#highlight">#</a></h2> <p>Simon&rsquo;s WASM-compiled Redis Array Playground is today&rsquo;s standout, showcasing how quickly we can now spin up interactive sandboxes for in-flight C pull requests using AI agents like Claude Code.</p> <h2 id="posts">Posts<a class="anchor" href="#posts">#</a></h2> <p><strong><a href="https://simonwillison.net/2026/May/4/redis-array/#atom-everything">Redis Array Playground</a></strong> Salvatore Sanfilippo recently submitted a PR adding a new array data type to Redis. To try out the newly proposed commands, including a server-side <code>ARGREP</code> powered by the vendored TRE regex library, Simon utilized Claude Code to build an interactive WASM playground that runs a subset of Redis directly in the browser. The post also points to Salvatore&rsquo;s own write-up on the AI-assisted development process behind the new array type.</p>