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这次，嫁妆唱名的还是秦溪。I waited quietly for a while. Zhao Mingkai recalled it and organized the language. Only then did he open his mouth and said:This paper summarizes the working principle, structure, specifications and models of time, and other related knowledge to help you understand the relevant contents of time relay more comprehensively.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.梦不落雨林-张艺兴23你就吹吧。