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.
Raised when encountering an object that is not of the expected type.
[1, 2, 3].first("two")
raises the exception:
TypeError: no implicit conversion of String into Integer