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Ruby documentation welcome to the official ruby programming language documentation You must register your account and activate it via an email before reporting issues. Getting started new to ruby

Start with our getting started guide This system is hosting the development of ruby language and its related projects 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. Operators in ruby, operators such as +, are defined as methods on the class Literals define their methods within the lower level, c language Ruby objects can define or overload their own implementation for most operators

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. 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. 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.

Ruby user groups are entirely devoted to ruby They typically feature monthly meetings, a mailing list, a website, and if you’re lucky, frequent hacking sessions (meetings devoted to giving people a chance to write ruby code). Symbol literals a symbol represents a name inside the ruby interpreter See symbol for more details on what symbols are and when ruby creates them internally

You may reference a symbol using a colon

It consists of some or all of Scheme, hostname, path, query, and fragment A ruby uri::generic object represents an internet uri It provides, among others, methods scheme, hostname, path, query, and fragment

Schemes an internet uri has a scheme

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