An instance of class IO (commonly called a stream) represents an input/output stream in the underlying operating system. Class IO is the basis for input and output in Ruby.| ruby-doc.org
A File object is a representation of a file in the underlying platform.| ruby-doc.org
Raised when the arguments are wrong and there isn’t a more specific Exception class.| ruby-doc.org
Public Instance Methods| ruby-doc.org
A Proc object is an encapsulation of a block of code, which can be stored in a local variable, passed to a method or another Proc, and can be called. Proc is an essential concept in Ruby and a core of its functional programming features.| ruby-doc.org
Public Instance Methods| ruby-doc.org
A String object has an arbitrary sequence of bytes, typically representing text or binary data. A String object may be created using String::new or as literals.| ruby-doc.org
A Range object represents a collection of values that are between given begin and end values.| ruby-doc.org
Public Instance Methods| ruby-doc.org
Public Instance Methods| ruby-doc.org
Public Instance Methods| ruby-doc.org
Public Instance Methods| ruby-doc.org