Ruby Documentation Welcome to the official Ruby programming language documentation. Getting Started New to Ruby? Start with our Getting Started Guide. Core Classes and …

Identical regexp can or cannot run in linear time depending on your ruby binary. Neither forward nor backward compatibility is guaranteed about the return value of this method.

Ruby is a simple and powerful object-oriented programming language, created by Yukihiro Matsumoto (who goes by the handle “Matz” in this document and on the mailing lists).

Mar 26, 2025 · Ruby 3.1.7 has been released. This release includes CVE-2025-27219, CVE-2025-27220 and CVE-2025-27221 fixes and update bundled REXML and RSS gems. Please …

May 14, 2025 · We intend to release the latest stable Ruby version (currently Ruby 3.4) every two months following the most recent release. Following this release (3.4.4), Ruby 3.4.5 is …

Ruby’s grammar differentiates between statements and expressions. All expressions are statements (an expression is a type of statement), but not all statements are expressions.

person = {name: 'Matz', language: 'Ruby'} person # => {name: "Matz", language: "Ruby"} You can use a hash to give names to method arguments:

Dec 25, 2022 · Ruby was first developed by Matz (Yukihiro Matsumoto) in 1993, and is now developed as Open Source. It runs on multiple platforms and is used all over the world …

To enable this feature, configure Ruby with --with-modular-gc at build time. GC libraries can be loaded at runtime using the environment variable RUBY_GC_LIBRARY.

A number of Ruby methods, both in the core and in the standard library, provide instance method to_a, which converts an object to an array. ARGF#to_a Array#to_a Enumerable#to_a …