Ruby documentation welcome to the official ruby programming language documentation The set class implements a collection of unordered values with no duplicates Getting started new to ruby
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Start with our getting started guide
Core classes and modules explore the essential classes and modules
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. It also offers many scripting features to process plain text and serialized files, or manage system tasks It is simple, straightforward, and extensible.
Please see the github releases for further details This version is a last version of normal maintenance for ruby 3.2 series We will fix only security issues for ruby 3.2 series until end of march 2026 Please consider upgrading to ruby 3.3 or 3.4 series
What’s here trigonometric functions ::cos
Returns the cosine of the given argument Returns the sine of the given argument Returns the tangent of the given argument Returns the arc cosine of the given.
This system is hosting the development of ruby language and its related projects You must register your account and activate it via an email before reporting issues. 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.
Each of these methods takes optional argument format, which has zero or more embedded format specifications (see below).
You can redistribute and/or modify it under the same terms as ruby
