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index - Documentation for Ruby 4. 0 Ruby Documentation Welcome to the official Ruby programming language documentation Getting Started New to Ruby? Start with our Getting Started Guide Core Classes and Modules Explore the essential classes and modules: String - Text manipulation and string utilities Symbol - Named identifiers inside the Ruby interpreter
Ruby Documentation In the Playground you can try any Ruby code you like The Official Ruby documentation is included
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
Ruby 3. 4. 5 Released - Ruby Programming Language 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 November, and 3 4 8 for January
Official Ruby FAQ 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)
Ruby 3. 5. 0 preview1 Released 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 especially for web development
class Hash - Documentation for Ruby 4. 0 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 some_method ({foo: 0, bar: 1, baz: 2}) # => {foo: 0, bar: 1, baz: 2} Note: when the last argument in a method call is a hash, the curly braces may be omitted:
control_expressions - Documentation for Ruby 4. 0 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
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
module Math - Documentation for Ruby 4. 0 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 sine of the given argument ::tan: Returns the tangent of the given argument Inverse Trigonometric Functions ::acos: Returns the arc cosine of the given