Edge cases

The unusual situations in which a program can go wrong: an empty list, the number zero, a very long text. Good tests check them.

You’ll also find it as: edge case

How it appears in the course

“Edge cases” = rare, borderline situations nobody thought about (for example an empty field).
What tricks will help you? · Module 01, How to talk to Claude · free

Learn Claude Code from zero, in plain English

12 modules with 1–2 minute lessons, which you can also do on your phone. The first two modules are free.

Start with the first lessonAll terms