Getting started new to ruby This system is hosting the development of ruby language and its related projects Start with our getting started guide
Ruby's Secret Page
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. If you have found an issue that affects a specific ruby community’s gem, follow the instructions on rubygems.org Nearly all of these libraries are released in the form of a gem, a packaged library or application that can be installed with a tool called rubygems. 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.
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 Class foo < string def + (str) self 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:
