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4. The result of the conversation is not important, but the atmosphere of the process is very important.巧合的是，帕基塔（Paquita）与情绪低落的MacarenaGarcía见面。 经过一个晚上的聚会，他们看到了未来。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."一边用大刀拨开乱箭，一边大骂道：猪。毛海峰看着杨长帆，终于意识到惹了不该惹的人，那么自己是为什么惹到这个人的呢？只招何永强可否？。Representative occupation: None