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　　介绍漫威旗下的重要角色及经典瞬间Some people will think that people with type B blood are very mysterious. They usually live in seclusion and see the head but not the tail. When they want to talk to him, they can't find anyone. When they don't look for him, they will suddenly appear again. Now there are some girls who just like this unique temperament, which will attract girls to be more interested in them and want to know more about them.The reason why the logic for creating an object is put into a separate class is that it can be used by multiple clients. And separates the creation and use of objects. However, this design also has many defects. First of all, SimpleFactory is a specific class, so we must program for the implementation, making the system lose its flexibility in this respect. Second, if we add new products, we have to modify the code in SimpleFactory, which violates the opening and closing principle. The above model is also called simple factory. He does not appear in GOF mode, it is more like a programming habit.Other expressions of Dimitt's Law include: only communicate with your direct friends; Don't talk to strangers.来了兴趣，抬手道，等等再砍。自打我出生，就住在这。杨长帆提醒道：说清楚，你们得负责本组所有事宜，包括运料、点数等等，觉得干不了的现在可以说。