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Description: implementation of a "Singleton" class
The Class::Singleton module implements a Singleton class from which other
classes can be derived. 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.
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.
For a description and discussion of the Singleton class, see
"Design Patterns", Gamma et al, Addison-Wesley, 1995, ISBN 0-201-63361-2.
Homepage: https://metacpan.org/release/Class-Singleton
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