[ 源代码： libclass-singleton-perl ]
软件包：libclass-singleton-perl（1.5-1）
libclass-singleton-perl 的相关链接
Debian 的资源：
下载源码包 libclass-singleton-perl：
- [libclass-singleton-perl_1.5-1.dsc]
- [libclass-singleton-perl_1.5.orig.tar.gz]
- [libclass-singleton-perl_1.5-1.debian.tar.xz]
维护小组：
外部的资源：
- 主页 [metacpan.org]
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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.