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We know that for the above code, Xiao Hong subscribes to shoeObj, an object that buys shoes, but if we need to subscribe to buying houses or other objects in the future, we need to copy the above code and change the object code inside again. For this reason, we need to encapsulate the code.Let's think about another problem. We have placed a string of rules on each "chain", but some of these rules are very similar. For example, Class A rules filter IP or ports and Class B rules modify messages. At this time, can we put together the rules that realize the same function? We must be able to do so.Find the learning community: Because a large amount of knowledge exists in the practice of the learning community, not in books, effective learning is not to close the door and practice hard, but to find your own learning group. For example, programmers practice programming on websites like GitHub.5. The exclusive lounge is very considerate.随后，谢逊还收张翠山和殷素素的孩子为义子，为他取名为——张无忌。讲述了比起麻烦的恋爱更喜欢一个人独处、人生悠闲自得的女性产业医师觉到孤独和焦躁，担心“如此下去或许一辈子只能一个人”，于是开始笨拙的追爱故事。