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MakeMethods::Emulator:UsergContributed PerlMakeMethods::Emulator::Singleton(3)

NAME
       Class::MakeMethods::Emulator::Singleton - Emulate Class::Singleton

SYNOPSIS
	 use Class::MakeMethods::Emulator::Singleton;

	 # returns a new instance
	 my $one = Class::MakeMethods::Emulator::Singleton->instance();

	 # returns same	instance
	 my $two = Class::MakeMethods::Emulator::Singleton->instance();

COMPATIBILITY
       This module emulates the	functionality of Class::Singleton, using
       Class::MakeMethods to generate similar methods.

       You may use it directly,	as shown in the	SYNOPSIS above,

       Furthermore, you	may call  "use Class::MakeMethods::Emulator::Singleton
       '-take_namespace';" to alias the	Class::Singleton namespace to this
       package,	and subsequent calls to	the original package will be
       transparently handled by	this emulator. To remove the emulation
       aliasing, call "use Class::MakeMethods::Emulator::Singleton
       '-release_namespace'".

       Caution:	This affects all subsequent uses of Class::Singleton in	your
       program,	including those	in other modules, and might cause unexpected
       effects.

DESCRIPTION
       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.

SEE ALSO
       See Class::MakeMethods for general information about this distribution.

       See Class::MakeMethods::Emulator	for more about this family of
       subclasses.

       See Class::Singleton for	documentation of the original module.

       For a description and discussion	of the Singleton class,	see "Design
       Patterns", Gamma	et al, Addison-Wesley, 1995, ISBN 0-201-63361-2.

       See "new" in Class::MakeMethods::Hash and "instance" in
       Class::MakeMethods::ClassVar for	documentation of the created methods.

perl v5.24.1			  2004-09-0MakeMethods::Emulator::Singleton(3)

NAME | SYNOPSIS | COMPATIBILITY | DESCRIPTION | SEE ALSO

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