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1人生的临时演员1. Creator: FactoryPizzaStore as defined above. It is an abstract class, which defines the method of creating objects. This method is an abstract method, and the specific process of creating objects is implemented by its subclasses. This abstract class usually relies on an abstract Product (another role in the factory method pattern) class. These abstract products are made by subclasses, and the creators do not care what kind of products are made.　　理发In programming, Sometimes it is necessary to generate a large number of fine-grained class instances to represent data. If we can find that these instances are basically the same except for a few parameters, if we can move those parameters outside the class instances and pass them in when the method is called, we can greatly reduce the number of individual instances by sharing the website invariantGeneral Conditions《终极高手特约版》是VIP会员独家尊享栏目，节目中将展现明星经理人的幕后花絮，以及晋级选手的精彩表现等高光集锦。