Getting started new to ruby This system is hosting the development of ruby language and its related projects Start with our getting started guide
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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. 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. 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. Each of these methods takes optional argument format, which has zero or more embedded format specifications (see below).
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'} 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:
The ruby standard library is a large collection of classes and modules you can require in your code to gain additional features
Below is an overview of the libraries and extensions, followed by a brief description of each.
