Official documentation

Where to read more: the Ruby documentation site, the quick start, and the core and standard library reference.

Runs in Zerethon IDE · Ruby 4.0 Official Ruby documentation ↗

This reference covers the parts you need most often. The official Ruby documentation is complete and free to read:

  • Ruby in Twenty Minutes — a short tour for a first look.
  • The core reference — every method of String, Array, Hash, Integer and the other built-in classes.
  • The syntax pages — the exact rules for methods, control expressions, exceptions and more.