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产科医生郭靖，喜欢对任何事情进行研究、推理、分析、判断，并将此用在临床第一线。这个被领导视为“不务正业”的边缘医生竟然要追求医院里最年轻、最漂亮的获得国家政府津贴的主任黄蓉，郭靖的顶头上司产科主任黄彩云是黄蓉的姐姐，她绝不允许妹妹嫁给这样的人，所以处处设难题，层层设障碍。作为小大夫的郭靖从工作和生活的细微之处，发现黄蓉的困惑，通过不懈的努力和细心引导，以及用心的呵护，最终和黄蓉过上开心快乐的生活。作为美国FBI最优秀的警犬，特警11号和它的训导员多年来破获了多起大案，立下了汗马功劳。这一次又是在特警11号的协助下侦破了黑帮头目桑尼的贩毒案。桑尼对特警11号恨之入骨，他发誓一定要让特警11号从这个世界上消失。范文轩叹道：这小子耽误了行程，也不报个讯息，真是……待回来了，必须得责备啊。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."无论他们是否情愿，他们每一个人都是这个时代的英雄。Define the interface first:黄豆道：我们又不是去跟人打架的。