Installing Ruby
If you cannot compile your own Ruby, and you do not want to use a third-party tool, you can use your system’s package manager to install Ruby. Some members of the Ruby community feel …
class Regexp - Documentation for Ruby 3.5
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 …
building_ruby - Documentation for Ruby 3.5
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.
exceptions - Documentation for Ruby 3.5
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.
module Math - Documentation for Ruby 3.5
See class Float for the constants that affect Ruby’s floating-point arithmetic. What’s Here Trigonometric Functions ::cos: Returns the cosine of the given argument. ::sin: Returns the …
strftime_formatting - Documentation for Ruby 3.5
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. …
Ruby 3.4.5 Released - Ruby Programming Language
Jul 15, 2025 · We intend to release the latest stable Ruby version (currently Ruby 3.4) every two months following the most recent release. Ruby 3.4.6 is scheduled for September, 3.4.7 for …
class ERB - Documentation for Ruby 3.5
The Ruby Processing System RDoc, for example, has one that can be used elsewhere. Other popular template processors may found in the Template Engines page of the Ruby Toolbox.
class Hash - Documentation for Ruby 3.5
person = {name: 'Matz', language: 'Ruby'} person # => {name: "Matz", language: "Ruby"} You can use a hash to give names to method arguments: def some_method (hash) p hash end …