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D) Practicality and skepticism. When looking at shallow reference books or looking up materials on the Internet, you should type (copy or copy) the code and run it yourself. You should modify other people's source code more and put forward your own opinions: why is the book not designed like this and why is it designed like that? What if you add some methods, method parameters, or member variables? You must do it yourself, at least run it. In addition, we should dare to ask questions and make bricks to bloggers. You can even question the commentary and intention of some chapters of GoF, not to mention some bloggers."Improving the ideological consciousness, civilized quality and scientific literacy of the cadres and the masses, enriching learning contents and resources, and innovating learning methods and organizational forms" is also an important role of the learning platform of "learning power".从21世纪的维纳斯变成了古代维纳斯，身材发生极大改变的女律师姜珠恩（申敏儿饰）和全世界著名的健身教练金英浩（苏志燮饰），极端的两个人相遇后，挑战减肥任务而使外表变得更美，人见人爱，但心里的伤痛却并非如此，通过分享心情而渐渐治愈伤痛，在这个过程中陷入了爱情。比真实的爱情更加治愈，甜美又鼻酸，不仅让心灵得到休息，也让人生得到治愈 。明朝，木府发生政变，年轻的木增来到京城，受到了良好的教育，学成之后，回到家乡带领族人过上幸福的生活，歌颂了木府开放亲和、诚厚谨慎和勇敢善战的民族精神。大排沟，垂直边上方的住家、店家排放肮脏的水柱，排沟上充满垃圾，成群的吴郭鱼依附在油渍上，老鼠、野鸽觅食，如果哪一天它们消失，可能也不会有人在意。赌场清洁员李凤楼（黄瀞怡饰演）与弟弟李昆洁（徐钧浩饰演）一起生活在一眼就能看尽的屋子里，李凤楼将女儿阿喜（陈昀析）藏了起来，因为被发现，她们就会被迫分开，一天，阿喜救下闯进屋内的黑色蝴蝶，李昆洁暴毙在阁楼上⋯⋯陈政阳饰演的哲学系天才教授饶恕，精明能干而且头脑冷静。他用哲学来解释爱情，对爱情有自己的一套学问。他的人生哲学理念是「顺时有序」，认为世间万物皆有时序，时间到了，时序里的任何事情，都会顺其自然地发生，明白这个道理，做任何事情，都能够得心应手。他认为谈恋爱是自找麻烦，自己并不需要。马栗饰演佛山「快乐Mall」公关部职员辰侣。她居于商场附近，父母都是各怀绝技的武痴，开设免费授徒的武馆「武之林」。辰侣是家庭经济支柱，在正职外，常在快乐Mall内各商店兼任不同职位，但她从不计较，乐天善良，善解人意，心无城府。一个是牛津的高富帅，一个是佛山的平凡女生，他们是如何遇上的，又发生了什么故事呢？看过《快乐520》，就会知道一切源自于一个巧合。The above is only a model of "Long En" bicycle, If you need to generate other types of bicycles, Other subclasses can be written. The most important advantage of factory mode is that some of the same methods can be implemented. We can write code in the parent class for these same methods. If we need to implement specific business logic, we can rewrite the parent class's methods in the subclass to implement our own business logic. In terms of professional terms, there are two points: First, weaken the coupling between objects and prevent code duplication. Instantiating a class in a method eliminates repetitive code. Second: Repetitive code can be written in the parent class. Subclasses inherit all member attributes and methods of the parent class. Subclasses only focus on implementing their own business logic.