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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七里滩中军营寨，黎章对顾涧道：将军，此次大战非同小可，周边各国都连横起来。皖南有一个与世无争的小镇，炎流镇。这是一个平原与山地交纵、濒河的小镇。炎流镇因炎流河得名。炎流河流经这里，将这座数百年的小镇一分为二，河北的土地属于祁家，河南则属于丁家。丁家与祁家两族为了争夺土地，积怨越来越深，几乎成了冤家。北方，日本侵华战争已经爆发，但是小镇上却显得异常的平静，丁祁两家还在为争土地斗来斗去。丁家大户丁啸天中年丧妻，延续香火成了丁家的首要大事，丁啸天谁也看不上眼，偏偏喜欢上了酿酒方家的独女银子，而祁家此时也要把银子收为自家的童养媳为祁家老爷子冲喜。丁啸天一怒之下抢走了银子，祁家老爷子被气死。祁家为报仇勾结了土匪绑架了丁啸天的父亲，致使丁家老爷中风而亡，他临死前交代丁啸天一定要守住家里的这片土地。丁祁两家的积怨爆发了！我党派与丁家有过交情的邱留全到炎流镇暗中收购粮食，却被祁家告密，此时祁家的二少爷祁春秋也带兵回到炎流镇。丁啸天为了保护邱留全和祁家对抗，邱留全趁乱跑走。被丁家抢走的银子一直对丁啸天不从，也趁乱跑走，想要追随邱留全，却在途中遇到日军，被我游击队所救，从此成为了Console.log (Baidu leader has come for an interview);《别忘了爱自己》的故事开始于一个北方的小城市，林童是个普通的上班族与妻子安宁过着平凡而安定的生活，一天悲剧突然降临在他身上，打开家门的林童发现妻子死在家中，尽管有许多证据表明有他杀的可能，随后而来的刑警却定性为自杀……悲愤的林童决心寻找证据证明是一向谋杀案，他在整理妻子遗物时发现一本日记和记数的账本。日记里有个叫陶大伟的医生渐渐引起他的怀疑，陶不仅与安宁关系密切而且有经济来往，林童在对陶大伟的调查中发现，他不仅仅是个普通医生而且掌握药品采购的大A rowing sport in which athletes paddle with their backs to the forward direction, originated in England from the 17th century to the middle of the 18th century.　　改编自哈兰·科本惊悚小说《Gone For Good》(Six Years，暂译)的影片。该项目由Netflix开发，阿耶同时负责剧本改编，并担任制片人。　　这是Netflix和Harlan Coben的5年14本书超级合约下进行的第4个项目。跟随之前的合作项目，本剧将设定在法国。