$ tail -f ~/blog | grep #testing
Posts filed under #testing.
2026-09-26 · 4 min read Three agentic skills I wish I'd started using sooner improve-tests, debrief-skill, and retro: three agent skills that handle the maintenance work that always loses to something urgent, from slow test suites to friction in skills and tooling. # ai · productivity · testing 2026-07-20 · 22 min read Learn Big O by measuring it, in Ruby Measure algorithm growth in Ruby by doubling inputs, compare Big O classes, and learn where timing estimates fail and how to check complexity in CI. # ruby · performance · algorithms · testing