class OptionParser: tutorial. rdoc].| docs.ruby-lang.org
class Range: A \Range object represents a collection of values that are between given begin and end values. literals.| docs.ruby-lang.org
class MatchData: MatchData encapsulates the result of matching a Regexp against string. It is returned by Regexp#match and String#match, and also stored in a global va| docs.ruby-lang.org
literals: Literals Literals create objects you can use in your program. Backtick Literals}[#label-25x-3A+Backtick+Literals] == Boolean and Nil Literals +nil+| docs.ruby-lang.org
module Enumerable: Enumerable@Methods+for+Iterating] - {And more. tt>, +false+ otherwise.| docs.ruby-lang.org
class Array: en. wikipedia.| docs.ruby-lang.org
implicit_conversion: i>, and so accepted as is. i>, in which case the called method converts the object.| docs.ruby-lang.org
class Proc: 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| docs.ruby-lang.org
class Object: Object is the default root of all Ruby objects. Object inherits from BasicObject which allows creating alternate object hierarchies.| docs.ruby-lang.org
class Hash: A +Hash+ maps each of its unique keys to a specific value. An Array index is always an Integer.| docs.ruby-lang.org