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Function:Provide an interface for creating families of related or dependent objects without specifying their concrete classes. Participants:AbstractFactory(ContinentFactory) declares an interface for ... 阅读全文
posted @ 2009-08-17 17:04
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Function:Lets subclasses redefine certain steps of an algorithm without changing the algorithm's structureActor: 阅读全文
posted @ 2009-08-17 16:15
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Function: Make sure that in an application exists only one instance of a class.Actors: 阅读全文
posted @ 2009-08-17 14:13
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