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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.Your "brain" can store all kinds of and endless information, and it can record all your thoughts. Save files, web pages, pictures, and even send e-mail to TheBrain. Adding and deleting are as simple as dragging and dropping.Tonmai18岁生日那天，收到了人生中第一份生日礼物，是死去姐姐Thannam的旧卧室。Tonmai在卧室见到了Thannam，他发现，只有他可以看到Thannam，可以和Thannam说话。而Thannam不记得自己是怎么自杀的，Tonmai决心查出当年发生的事情。Disk.startup ();在那边，白银产量过剩，遍地银元，可以说在那边吃一顿饭要花费的银子足够在这边吃一个月饭了。[Publisher]: Ministry of Labour and Social Security尹旭心中想到，不管那些人是何身份，魏人都会咬定是秦国刺客，何况还有自己的因素在内。