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The Validator class, here as the Context, is responsible for receiving the user's request and delegating it to the strategys object. In the above code, we first create a Validator object, and then add some validation rules to the Validator object through the validator.add method. The validator.add method receives 3 parameters, as follows:One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.相传“千门”由伏羲氏创立，在历史中不断演化发展，形成各门各派，涵盖赌术、骗局、易容术、催眠术、中国戏法等等，民国时期最为鼎盛。“千门”技艺概不外传，直到门中一少年为报杀父之仇，开始揭秘各中因果，世人才恍然大悟。故事发生在民国时期一个“三不管”的地界，这里三教九流汇集，俨然是一个暗潮汹涌的小江湖。因一场离奇的案件，三个身份各异的年轻人走到一起，开始“组团”破案的历程。此后一桩桩超自然离奇案件接踵而至，各色光怪陆离的江湖奇人悉数登场，隐藏在所有案件背后的神秘力量慢慢浮出水面。********立即就有个甜甜的声音应道：嗳。Instantiate the corresponding object instance based on the class name using the reflected API秦瀚、秦涛也笑着直拍手。重松清短篇小说<不要哭，赤鬼>将拍摄电影，堤真一，柳乐优弥，川荣李奈共演。 兼重淳导演作品，故事围绕着老师和昔日学生之间的友情展开，2019年公映。