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Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.该节目将公开演艺圈有名的6位美食家明星展开新菜品竞争，最后获得胜利的菜品将实际在全国便利店上市的新概念综艺节目。并且该菜品上市后获得的收益金将捐赠给缺食儿童，具有意义的概念引起社会关注。一个年轻的拉脱维亚屠夫前往布鲁塞尔寻求更好的工资，但一系列的不幸导致他奇狗.cc受波兰罪犯的控制。一个吕雉，让这个时间提前了不少罢了。Lin Junjie再说板栗，坐车穿过下塘集，上了通往清南村的大道。