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
Let's look at the scripts of each character:
北京知青梅雁，在山西某个中学做着数学老师，她不但独自带着6岁的女孩梅阿娜，而且这孩子还来路不明，没有人知道她的背景，对她的猜测和不好的传言非常多……同为知青的毛毛老师一直深深爱着梅雁，由于他已结婚，只好将这份情感深深地埋在心里，但他经常照顾梅雁和阿娜，这一切却惹来了毛毛媳妇的疾恨，和别的人的猜疑，由于梅雁独身一人，又长得漂亮，学校校长对她垂涎三尺，经常把她叫到办公室，动手动脚，进行性骚扰，但都被梅雁推脱……
第二天早饭后，黎章去见副将军顾涧，禀报了要跟胡钧汪魁去打猎的事。
其实他们的家人过得都很好，甚至比在浙江过的还好，几乎是国宾级待遇。
地球变暖引发的罕见的飓风席卷全球，随之而来的便是惊天大海啸和特大冰雹灾害：艾菲尔铁塔摇摇欲坠，埃及大金字塔土崩瓦解，纽约自然博物馆被浓雾吞噬，美国白宫瞬间崩塌，死伤无数，整个地球瞬间变为人间炼狱科学家罗斯教授组织发起了一支风暴敢死队，他们用生命去争取人类的最后一线生机。而此时恐怖分子的袭击让整个局面更加混乱不堪。就在此时，飓风突然以不可挡之势迅速上升为历史上罕见的特大风暴，难道这真的是世界末日了吗？敢死队将如何拯救地球，人类将如何幸存……
From the above command class code, we can see that any operation has an execute method to perform the operation. The above code uses traditional object-oriented programming to implement the command mode. The procedural request call of the command mode is encapsulated in the execute method of the command object. Have we found the above writing code a little cumbersome? We can do this using the callback functions in javascript, In object-oriented, The receiver of the command mode is saved as an attribute of the command object, and the command execution operation is agreed to call the command.execute method. However, if we use the callback function, then the receiver is closed in the environment where the callback function is generated, and the execution operation will be simpler. Only the callback function can be executed. Let's look at the following code:
郑海鹰和白桦的婚姻，在七年前解体。心高气傲的郑海鹰，像躲避瘟疫一样，躲避有关白桦的任何话题。偏偏事与愿违，牵涉白桦的种种切切，还是围绕在她身边集中爆发了。退休工人郑万年和老伴高凤兰为三个女儿各不相同的婚姻生活牵肠挂肚。大女儿郑海鹰，是个名律师，丈夫白桦，是一家银行的副行长，仕途看涨。这一对成功男女，常常是心有灵犀一点通，一度成为老郑家引以自豪的模范夫妻。功成名就的白桦，对家庭生活有了新的追求，他希望自己的妻子是个温柔体贴的贤内助，甚至最好是个全职太太。但郑海鹰事业性过重，没有任何通融的余地。七年前，白桦因病住院，当需要亲属在手术单上签字的时候，郑海鹰因忙于出庭而没能在医院陪护。年轻美丽的方卉以白桦妻子的名义，顶着压力在手术单上签了字，并精心照顾白桦。“苍蝇叮住有缝的蛋”，日久生情，郑海鹰无奈和白桦散伙。方卉甚至为了顺从白桦，心甘情愿地当上了全职太太。郑海鹰的离异和七年来一直没有重组家庭，成为老郑家永远的痛。二女儿郑海燕，在老郑家取代了大姐一家模范夫妻的地位。郑海燕和丈夫陈克加表面上“夫唱
当查理在阿尔玛的后院右侧找到缅因州州长节日庆典的完美圣诞树时，阿尔玛和查理相遇了。
正说得热闹，却见头戴王帽、身穿衮龙袍的玄武王在一群乡民村汉的簇拥下拐过郑家院墙出现在众人面前，朱缨华盖四轮马车和仪仗执事队伍却跟在身后。
Intel's current processor development mode is "Tick-Tock", which also updates the microarchitecture (Tock) every two years and alternately upgrades the production process (Tick). Nehalem is a new architecture using 45nm process, while Westmere will be upgraded to 32nm in 2009 and Sandy Bridge in 2011. According to the latest intelligence, Intel will launch "IVY Bridge" in April 2012, which is Sandy Bridge's 22nm process upgrade. In 2013, "Haswell" was launched again, another new architecture based on 22nm process. Now it can be basically confirmed that Intel's next stop after 22nm will stay at 15nm. There is already a lot of evidence to prove this point. It is said that TSMC is the same. However, there are also statements that mention different nodes such as 16nm and 14nm, and IBM/AMD's plan is 16nm. It should be 11nm in the future, but Intel has also mentioned 10nm on different occasions. It seems that the distant future is still full of unknowns. In terms of code name, some people said that the 22nm Haswell in 2013 should be followed by Rockwell. According to the convention, the architecture will remain unchanged and the process will be upgraded. However, SemiAccurate website today
本武侠片由龙逸升编导，惠英红、何家劲及关之琳主演。 故事描述，游侠杜孟飞（何家劲 饰）奉师命下山闯荡江湖，途遇黑道中人捉拿沐龙门女弟子沐婉儿（关之琳 饰），杜挺身相救，沐万分感激。未几，杜又见黑道中人围攻少女李赛男（惠英红 饰），乃将之救出，孰料李反斥杜坏其好事，令杜啼笑皆非。及后，杜无意中听得一段二十年前的江湖恩怨，并得知黑道首领乃李之杀父仇人，而沐则是黑道首领失散了的女儿……
东陵珍宝不翼而飞。蒋介石、阎锡山闻讯先后抵达北平。蒋介石连夜召见军政要员，指令阎锡山尽快审判盗墓元凶。老奸巨猾的阎锡山为保存实力与蒋介石抗衡，故意拖延时间，提出必须捉住那辛庭方可开庭。孙殿英借此喘息机会，一面派人四处搜寻珍宝和那辛庭，一面多方求情，上下行贿。那辛庭被押到一座神秘的山寨，为搞清真相，他拒绝饮食。孙殿英发兵围山的密令被三姨太得知，她急告郭颂上山援救那辛庭。道长沈九将那辛庭绑在剥皮柱上，霎那间，那辛庭的生命危在旦夕。
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小七是她大孙子，有四岁了。
对于这类问题，他们自小被家人考问多次，最是熟练了，如今能回答的滴水不漏，一个亲人也不得罪。
影片故事背景一如上集，主要人物布迪警长亦由上集的罗伊·谢德扮演，但是今次出现肆虐艾密迪海滩的大白鲨，却是一条满含恨意，一心前来报“杀夫之仇”的母鲨。
几十倭寇，一路走到城门弓箭射程的边缘，交谈一番后，两人缓步向前迈出。
在日本美术史上，熊谷守一被认为是野兽主义画家，他出身富裕却过着贫寒生活，获誉“画坛仙人”。影片讲述了熊谷守一30年几乎不出门，在家创作“仙人物语”的故事。山崎努和树木希林两位驰骋日本影坛几十余年的老戏骨演起传记片来游刃有余，名导冲田修一不改温暖本色。
森林泰山（George of the Jungle）是迪士尼1997 年推出的卖座喜剧电影，票房上飚出漂亮的成绩，更捧红了担任本片男主角的 Brendan Fraser。本片故事叙述一位从小被猩猩所养大的 George 意外救了来到野外的美女 Ursula，两人因此谱出恋情，但是 Ursula 却有一位不死心的未婚夫，趁著 George 与 Ursula 远赴旧金山，偕同几个盗猎者要抓那只会说话的猩猩去卖钱，George 接到鸟儿的通知，于是火速展开救援，阻止了坏人的阴谋。
