GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages
MakeMethods::Emulator::Singleton(3) User Contributed Perl Documentation MakeMethods::Emulator::Singleton(3)
 

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

  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();

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.

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 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.
2004-09-06 perl v5.28.1

Search for    or go to Top of page |  Section 3 |  Main Index

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with ManDoc.