Learn how to use CSS object-fit to scale, crop, and position images responsively without distorting aspect ratios, plus a comparison with background-size.

Learn how to securely set up a new Ubuntu server with user accounts, SSH keys, firewall rules, and basic hardening steps.

Recently I put some finishing touches on the exreg gem, a pure-Ruby implementation of a Unicode regular expression engine. It supports nearly all of the same functionality as Onigmo, the Ruby regul... Read more Recently I put some finishing touches on the exreg gem, a pure-Ruby implementation of a Unicode regular expression engine. It supports nearly all of the same functionality as Onigmo, the Ruby regular expression engine, with caveats listed in the README. Importantly however, it uses a Thompson-style NFA virtual machine, meaning it is immune to ReDoS caused by catastrophic backtracking. Show less

Developers don’t need more tools—they need fewer, higher-quality ones. This piece distills research and field evidence into six principles for faster, calmer, trustworthy devtools in 2026.