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杨长帆已经绝望。Pos = 0;小葱忙问道：你在哪见到的？她是什么样的人？葫芦不耐烦地说道：她是什么样的人关我们什么事？又何必问。6. Don't look at stocks that are not rising channels at all. No matter what happens in the future, don't accompany the main force to build a warehouse. I don't have time to spend with them.Gear:Therefore, learning design patterns, The first thing to do is to understand which aspects of design patterns are available to developers, Then, the principle, timing and method of each design pattern are studied respectively, that is to say, under what circumstances should a certain design pattern be used? When understanding the timing of a certain design pattern, it is also necessary to understand what consequences will be caused if this design pattern is not used at this time. After understanding the principle and usage of each pattern, more importantly, learning the object-oriented thinking mode, after mastering the object-oriented thinking mode, looking back at the design pattern, you will have a deeper understanding. Finally, learning the design pattern, you must study hard and practice more. "I agree with the last sentence very much."