This is the Class::Singleton module.
A Singleton describes an object class that can have only one
instance in any system.
An example of a Singleton might be a print spooler or system
registry.
This module implements a Singleton class from which other
classes can be derived. By itself, the Class::Singleton module
does very little other than manage the instantiation of a
single object. In deriving a class from Class::Singleton,
your module will inherit the Singleton instantiation method and
can implement whatever specific functionality is required. |
perl