Documentation - Ruby Programming Language
The Koans walk you along the path to enlightenment in order to learn Ruby. The goal is to learn the Ruby language, syntax, structure, and some common functions and libraries.
index - Documentation for Ruby 4.0
Use the following links to access the comprehensive set of libraries included with Ruby:
About Ruby
Ruby, as a language, has a few different implementations. This page has been discussing the reference implementation, in the community often referred to as MRI (“Matz’s Ruby …
class Regexp - Documentation for Ruby 4.0
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.
index - Documentation for Ruby 3.4
Ruby Documentation Welcome to the official Ruby programming language documentation. Getting Started New to Ruby? Start with our Getting Started Guide. Core Classes and …
strftime_formatting - Documentation for Ruby 4.0
Formats for Dates and Times Several Ruby time-related classes have instance method strftime, which returns a formatted string representing all or part of a date or time: Date#strftime. …
class Struct - Documentation for Ruby 4.0
Class \\Struct provides a convenient way to create a simple class that can store and fetch values. tt>; the first argument, a string, is the name of th
exceptions - Documentation for Ruby 4.0
Ruby code can raise exceptions. Most often, a raised exception is meant to alert the running program that an unusual (i.e., exceptional) situation has arisen, and may need to be handled.
Ruby 3.5.0 preview1 Released
Apr 18, 2025 · 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 …
building_ruby - Documentation for Ruby 4.0
Miniruby is a version of Ruby which has no external dependencies and lacks certain features. It can be useful in Ruby development because it allows for faster build times.