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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.In any case, IT is an attractive business!所以现在你必须将消息带回去，让父亲小心……知道吗？这不是我一个人的事情，这是关系到家族安危的大事情，所以你一定要答应我。由东远政和影视倾力打造的网络剧《菜鸟阎王》近日在北京正式筹备。该剧由曾执导过《重案六组》的子文担任导演。Zhang Weiguo, vice-chairman of the Hubei Provincial Committee of the Chinese People's Political Consultative Conference and secretary of Shiyan Municipal Committee, said that Shiyan City's number of tourists has increased by 25% since the second half of last year by participating in "Charming China City". During the Spring Festival in Wudang Mountain, there was a net increase of 50,000 tourists. "Charming China City" has discovered our own glittering golden light and helped our city put on a beautiful new outfit.《黑水仙》（Black Narcissus）是一部三集迷你剧，Amanda Coe负责撰写剧本，Tom Winchester担任执行制片人。故事根据Rumer Godden的经典小说改编，主题仍然为「性压抑」、「禁忌之爱」和「宗教信仰」，并且掺杂了「超自然现象」。在遥远的尼泊尔，Clodagh修女和她的女子修道院正尝试与当地人更融洽地生活，但Clodagh修女内心压抑已久的性欲却在此过程中被唤醒了。她被地产商Dean先生深深吸引，但他们的关系越是充满激情，就越预示着悲剧结局——因为Clodagh修女的禁忌之爱似乎映射了古老的尼泊尔公主Srimati的爱情悲剧。