Ruby is an interpreted object-oriented programming language often used for web development. It also offers many scripting features to process plain text and serialized files, or manage system tasks. It is simple, straightforward, and extensible.
Ruby API is a Ruby on Rails app that makes browsing and searching Ruby's documentation easy and fast for users.
A String object holds and manipulates an arbitrary sequence of bytes, typically representing characters.
Represent whole numbers in Ruby
Arrays are ordered, integer-indexed collections of any object.
A Hash is a dictionary-like collection of unique keys and their values.
Symbol objects represent names and some strings inside the Ruby interpreter.
The Kernel module is included by class Object, so its methods are available in every Ruby object.