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When the factory is a function, it represents the construction method of the module, and the interface provided by the module can be obtained by executing the construction method.CM1, …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.The formula is wrong. . .First of all, Ruiyi has made an inventory of some representative companies in the field of thinking ability training at this stage. According to the learning scenes and teaching modes, Ruiyi can be divided into three categories: online work class, entry game APP and online off-duty class.邹辉是闻名世界的“神枪手”，因痴迷于射击事业，对家人照顾甚少，导致爱妻红杏出墙，因此悔恨不已，并发誓自己和后代不再涉足射击事业。其子邹志军(洪天明饰)，具有射击天赋。在一次“神枪手”射击游戏比赛中，小试枪技，没想到得分成绩远超最好记录，赢得一片喝彩，其父的态度也开始转变。一日，邹志军偶遇绑劫案，劫匪持枪劫持重要人质与警察对持,邹志军在混乱中拾得一把枪，毫不犹豫抬手一枪击毙劫匪，令在场所有人为之惊叹不已，邹志军因此英名远扬，但此时一个阴谋也因他而产生，突如其来的事件令这位天生“神枪手”陷入了一个个危险的境地……