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 oth...

Create a singleton class. Only one instance of this class will ever exist, no matter how many times a call is made to OOP::Perlish::Class::Singleton->new(); The first call will create the instance, and all subsequent calls will receive references to ...

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, t...

This metaclass role makes sure that there is only ever one instance of an object for a singleton class. The first call to "construct_instance" is run normally (and then cached). Subsequent calls will return the cached version....

This is the Class::WeakSingleton 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, system registry or database connection. A "weak" Singleton is not immort...

classes derived from Class::SingletonProxy redirect class methods to (per class) singleton objects. METHODS $class->SINGLETON() this method can be redefined on subclasses and is automatically called to create the singleton when it has not been previo...

This module is an alternative to Class::Singleton and Class::WeakSingleton, and provides a more secure Singleton class in that it takes steps to prevent the possibility of accidental creation of multiple instances and/or the overwriting of existsing ...

This module provides a Perl implementation of singleton methods. The Ruby FAQ defines singleton methods like so: (Q) What is a singleton method? (A) A singleton method is defined for the particular object but in the class. A singleton method allows a...

When you do this with DBIx::Class: my $row = $schema->... my $row2 = update_and_return(); sub update_and_return { my $row = $schema->... $row->somefield("HLAGH"); $row->update(); return $row; } then even if both $row and $row2 have the same row_id, t...

This module allows you to turn a class into a module that exports methods as functions that use an implicit singleton. This allows you to provide a "hybrid" object-oriented/functional interface....

"Class::Monadic" provides per-object classes, monadic classes. It is also known as singleton classes in other languages, e.g. "Ruby". Monadic classes is used in order to define monadic methods, i.e. per-object methods (a.k.a. singleton methods), whic...

this class does DI. The instance is generated based on an external setting, and the dependence between components is excluded from the source code....

This class implements the Null Class design pattern. Suppose that methods in your object want to write log messages to a log object. The log object is possibly stored in a slot in your object and can be accessed using an accessor method: package MyOb...

Class::Default provides a mechanism to allow your class to take static method calls and apply it to a default instantiation of an object. It provides a flexibility to an API that allows it to be used more confortably in different situations. A good e...

MongoDBx::Class is a flexible object relational mapper (ORM) for MongoDB databases. Given a schema-like collection of document classes, MongoDBx::Class expands MongoDB objects (hash-refs in Perl) from the database into objects of those document class...

This module provides a flexible base class for building objects with cloning capabilities. This module does it's best to respect the encapsulation of all other objects, including subclasses of itself. This is intended to be a stricter and more OO-ish...