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杨长帆不禁好奇，捡起地上的纸团，粗粗一扫，瞬间理解了杨寿全。可恶。龙阳君点头道：好的，你去准备吧，魏国已经不在，本君现在也是了无牵挂，就和刘邦拼个你死我活吧。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.So what is the click event?However, when the industry was fighting "fast", it also encountered embarrassing situations. For example, one year when the Oscar awarded the best picture award, the guests mispronounced it, and the colleagues sent it out in the first place....