Getting started new to ruby See symbol for more details on what symbols are and when ruby creates them internally Start with our getting started guide
Ruby Buying Guide - International Gem Society
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. 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 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). 'ruby'} person # => {name Ruby} you can use a hash to give names to method arguments
Def some_method (hash) p hash end some_method ({foo When the last argument in a method call is a hash, the curly braces may be omitted: 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.
Two symbol literals a symbol represents a name inside the ruby interpreter
