Today I Learned

The small stuff that quietly makes you a better dev — one note at a time. Das kleine Zeug, das dich nebenbei zum besseren Dev macht — Notiz für Notiz.

• Jun 19, 2026 · ~1 min

  PHP's array_is_list() is underrated

  A tiny 8.1 function that replaces a surprising amount of hand-rolled key checking.

• Jun 18, 2026 · ~5 min

  Astro, for people who already know the web

  A 5-minute mental model of Astro for experienced devs — server-first rendering, islands, and content collections — without the getting-started fluff.

• Jun 17, 2026 · ~1 min

  Why I started a TIL blog

  A small daily habit: write down one thing I learned, and keep questioning the stuff I do on autopilot.