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.

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

Mar 3, 2010 · This is a list of Ruby releases. The shown dates correspond to the publication dates of the English versions of release posts and may differ from the actual creation dates of the …

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 3.1 (End of Support 2025-04) Ruby 3.0 (End of Support 2024-04) Ruby 2.7 (End of Support 2023-04) Ruby 2.6 (End of Support 2022-04) Ruby 2.5 (End of Support 2021-04) Ruby 2.4 …

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.

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. …

self. language = hash [:language] end end matz = Dev. new (name: 'Matz', language: 'Ruby') matz # => #<Dev: @name="Matz", @language="Ruby"> Creating a Hash You can create a Hash …

books [: matz] = "The Ruby Language" books [: black] = "The Well-Grounded Rubyist" Hashes are also commonly used as a way to have named parameters in functions.

All rights reserved. You can redistribute and/or modify it under the same terms as Ruby. The Set class implements a collection of unordered values with no duplicates. It is a hybrid of Array’s …