class FalseClass
Parent: Object
Version: 1.6


& ^ |

The global value false is the only instance of class FalseClass and represents a logically false value in boolean expressions. The class provides operators allowing false to participate correctly in logical expressions.

instance methods
& false & anObject -> false
And-Returns false. anObject is always evaluated as it is the argument to a method call-there is no short-circuit evaluation in this case.
^ false ^ anObject -> true or false
Exclusive Or-If anObject is nil or false, returns false; otherwise, returns true.
| false | anObject -> true or false
Or-Returns false if anObject is nil or false; true otherwise.

Extracted from the book "Programming Ruby - The Pragmatic Programmer's Guide"
Copyright © 2000 Addison Wesley Longman, Inc. Released under the terms of the Open Publication License V1.0.
This reference is available for download.