The Digital Press

This article summarizes many subtle and unintuitive "traps" or pitfalls that developers may encounter across a wide range of programming languages, tools, and technologies, from CSS quirks to floating point behavior and concurrency issues.

Why it matters: Understanding these traps helps prevent bugs and unexpected behavior in software development across diverse tech stacks.

The big picture: The list spans HTML, Unicode, floating points, multiple languages, databases, concurrency, Linux, Git, networking, and more, reflecting real-world complexity.

The other side: Some readers caution that context is key, some claims may be inaccurate, and the list reads more like stream-of-consciousness than definitive guidance.

Commenters say: They appreciate the breadth of shared knowledge but warn against literal interpretation, highlight frustration with poor API designs, and call out surprising gotchas like shell unset variables and flaky traceroute data.