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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人比人，能气死人。短剧《陛下在左，老板在右》是一部讲述幻想跟老板谈恋爱的女主福宝，意外得到一本愿望笔记，并靠着笔记实现扑倒老板的愿望。这时突然从天而降一位自称是愿望笔记主人的古代皇子，为了拿回笔记，也对福宝开展追女攻势，从此福宝在两个男神之间不断周旋和动摇的都市甜宠的故事。First of all, I would like to express my expectation for updating the difficulty options of the game.律师韩绪年轻有为,事业成功但夫妻关系冷淡. 碍于朋友情面,韩绪出面为被控涉嫌贩运毒品的缪兰做辩护律师.缪兰入狱前是"红翻天"的老板,年轻漂亮.入狱后一直喊冤不止,认为自己是被诬陷的.当韩绪在看守所会见缪兰时,情绪过激的缪兰竟挟持韩绪要求释放.警方紧急出动,韩绪沉着应对,化解危机.出于职业敏...Model Stealing Attack原黑帮老大的女儿胡家琳因遭二当家韩朗袭击而入院，原警察先身为胜联一员的韦峻轩一直守护在家琳旁，照顾家琳并苦苦向家琳道歉，家琳出院后，终于接受峻轩，两人结婚。韩朗扶持峻轩上位成为胜联老大，但仍背后控制峻轩。峻轩刚刚上位就遭到暗杀，韩朗留峻轩看管胜联，自己只身前往泰国欲打通中港所有运毒路线，却在泰国遭到仇家伏击被抓，不料在囚室竟遇到了被抓到泰国的子弹，子弹欲杀韩朗，却因正义感而下不了手。两人被关押而一筹莫展之际，被一神秘人救出，这神秘人竟是子弹女友陈玥琪！原来之前子弹和玥琪陷入危机，要被处决时，洛威并未杀死玥琪，而是把玥琪藏了起来，等机会让子弹和玥琪团聚，玥琪得知子弹被劫至泰国，不顾一切前来救援。子弹决心麻痹韩朗，提出和韩朗和解，两人协力重整了泰国黑道势力，返回香港。