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后来登记册子时也没发现。The above is only a model of "Long En" bicycle, If you need to generate other types of bicycles, Other subclasses can be written. The most important advantage of factory mode is that some of the same methods can be implemented. We can write code in the parent class for these same methods. If we need to implement specific business logic, we can rewrite the parent class's methods in the subclass to implement our own business logic. In terms of professional terms, there are two points: First, weaken the coupling between objects and prevent code duplication. Instantiating a class in a method eliminates repetitive code. Second: Repetitive code can be written in the parent class. Subclasses inherit all member attributes and methods of the parent class. Subclasses only focus on implementing their own business logic.　　这个男人陷入可怕的折磨当中，他开始怀疑，这两个女人是否认识？难道是她们合谋要杀死他？一系列恐怖事件开始发生在这个男人身上…You can see that PizzaStore depends on a SImpleFactory, which depends on an abstract pizza. Under normal circumstances, to decouple, control inversion is required. The core idea of control inversion is that neither the upper structure nor the lower structure depends on implementation, but on abstraction.(3) Double check lock[Extension] Wuxi Enterprise's First Certificate: Free; One household with multiple certificates/foreign enterprise certificates: 150 yuan/sheet/year待一切都筹划妥当，立即对巴蜀用兵。