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The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu一个月前，尚真（熊黛林 饰）来到韩国首尔，偶遇了向女友求婚失败的书店老板健宇（立威廉 饰），健宇为人温厚善良，让沉浸在遭受男友背叛的痛苦中的尚真忽然萌生了一个想法：要利用健宇帮自己破坏男友的婚礼。于是，健宇跟随尚真来到中国，回家的尚真暴露出了“野蛮”的一面，对远道而来的国际友人疏于照顾。尚真的表妹永真（冯媛甄 饰）和姐姐一样令男人头疼，担任跆拳道教练的永真班中有一名缺乏男子气概的学员志凯（何炅 饰），志凯对永真仰慕有加，但却时常在永真的拳脚下吃亏。健宇陪伴尚真进行破坏婚礼的准备工作，却在演习中得罪陌生人，而此时，距离婚礼的日期越来越近了……如果您喜欢这部作品，欢迎您来投推荐票、月票，您的支持，就是我最大的动力。该片讲述想进入核心圈子的一窍不通暴发户欲从一瞬间落魄的从骨子里头都是名门望族家的女儿那里抢走美术馆从而陷入爱情的故事。成长背景,财力,学历,取向,价值观完全不同的两男女在停业之前以美术馆这一媒介相遇碰撞的同时,去理解完全没有经历过的对方的人生,并且变化成长的过程。Behind both analysis and synthesis is classification ability. Analysis is to find differences in one class, while synthesis is to find commonality in different things, which is equivalent to the dimension of classification. In fact, the core of pyramid principle and structured thinking is classification ability. This is also why many people have learned pyramid principles or structured thinking, but they still cannot analyze and solve problems because they have not accumulated a large amount of knowledge in a certain field (declarative and procedural knowledge, situational knowledge) and do not have conceptual ability in the field.蔡俊因《荒村公寓》一书走红，表妹苏萌同粉丝会书迷踏上寻找荒村的旅途，而在签售会现场，陌生女孩欧阳小枝拿出一张来自荒村的照片后神秘消失。书迷自荒村归来后，身陷诡异迷局，预言成真。苏萌男友霍强怀疑这一切与小说有关，和蔡俊一起展开调查，根据线索找到一座同名的荒村公寓，不料遇到神秘租客小枝，屋内的诡异景象让蔡俊渐渐感觉到他和小枝之间，存在千丝万缕的联系，而荒村是解开秘密的钥匙。在早已废弃的古老山寨里，欧阳、祝由、西巫三大家族的恩怨情仇渐渐浮出水面，一连串诡异事件的真相也呼之欲出，荒村宝藏传说的秘密终于解开，可在地宫秘境里，一路携手走来的蔡俊和小枝经历了一场生死离别。.