So many concepts, don't have a headache! Let's look at the relationship between the three methods with pseudo code!
Liskov Substitution Principle, LSP (Richter Substitution Principle) means that subclasses must replace their parent types. In other words, in the process of software development, after the subclass replaces the parent class, the behavior of the program is the same. Only when the subclass replaces the parent class and the function of the software is not affected can the parent class be truly reused, and the subclass can also add new behaviors to the parent class. In order to look at an example of violation of LSP principles, the specific code is as follows:
一对50多岁的夫妻出生于婴儿潮时代，对父母尽孝，为子女牺牲自己的人生。讲述这对夫妻与他们的父母及子女三代人的故事。
天启，你如此公然秀恩爱，考虑过单身狗的感受吗？这样虐待动物。
YouTube打造的动作喜剧《韦恩》(Wayne，与布鲁斯韦恩没关系)正式预定成剧集，该剧去年12月预定了试播集。由马克·麦克肯纳(《唱街》)和席亚拉·博拉沃(《海军罪案调查处》《骨瘦如柴》)主演，Shawn Simmons(《腌黄瓜先生》《摇滚校园》)创作，《死侍》编剧Rhett Reese＆Paul Wernick担任执行制片人。目前一季共10集，将于今年在YouTube Red上推出。
In summer, the temperature of the network cable in some concrete structural layers is as high as over 40 degrees. In some cases, it may be higher. Therefore, when we choose the network cable, we must consider the sensitivity of the network cable performance to temperature.
如果你相信自己，任何事情都是可能的。本杰明·格拉斯（导演亚伦·费舍尔饰演）拥有强迫症、边缘人格和情感障碍等等缺陷。在埃伦·托兰饰演的角色帮助下，克服障碍最终找到真爱。
口嫌体正的护妻狂魔言默和努力的机灵鬼乔一间的“陈年冰块”很快被二人的深情融化。生活难免有波折，二人历经社会洗礼感情愈加深厚。懂得了“要走过去争取自己的爱人，有勇气的人才值得被爱”的乔一与和“从见到你的那天起，我就没想过要分开”的言默都会抓紧时间完成这场“从校园到婚纱”。从此执子之手、绝不撒手。
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据悉，索尼已经与很多家知名的App达成协议，将会在电影中用到他们的App，其中包括音乐应用Spotify。
声由于锋芒太露而引起犯罪头子蒋文浩的不满，派人强奸其旧女友阮静雯，声大为愤怒，誓要缉凶，并与浩的集团作战到底。晖因癫痫病被调离警局，无意中加入了浩的犯罪集团并成为其左右手，被迫与声为敌，另一方面，杰在一次意外中翻然醒悟，恢复良知，决助声对付恶势力，潜伏于浩集团做卧底。结果，杰在找到罪证时被晖打至残废，声为主持正义不得不与生死之交以枪相向……
爱德华·刘易斯是个身家百万的企业巨头，也是个潇洒迷人的青年男子。但是麻烦的是他总是搞不好和女人的关系，最近，他与女友的关系又破裂了。
The market often likes to choose some especially brave and lucky people and award shining medals to them for their dancing. These people wore medals to receive the worship and applause of all, triumphant and confident. However, if we look at the fate of these warrior medal winners in history, we find that most of them were eventually thrown into the dustbin by the market. Courage + luck + pursuit, this is the curse of the market rather than a blessing.
来自世界各地的学生入住韩国丰富多彩的大学宿舍，发展友情和爱情，体验全新的生活。
轻松幽默的家庭伦理剧《谁来伺候妈》作为《老牛家的战争》的姊妹篇，该剧由知名导演余淳先生执导，结合了时下最火的家庭婚姻生活话题，讲述林母和林家三兄弟的复杂家庭生活，关注赡养老人问题、遗产分割问题、离婚再婚等多种家庭生活中会面临的各种琐事。
网剧《喂，我是你的微糖男友》以击剑运动为主题，通过友情、奋斗、迷茫、成长的青春之路进而弘扬少年强则国之强的新时代精神。青春靓丽的造型与高燃的击剑运动相结合，坚韧不拔的热血精神恰到好处的体现了新时代下“小正大”的思想格局，青年演员的表现值得期待。
侦察英雄周俅退役后在高达公司任保安，高达公司正在举行第三届模特儿大赛。公司总裁韦丽遭到康倩的暗杀，被周俅及时制止。周俅和康倩本是恋人。三年前，倩考上高达模特公司出国，从此断了音讯。原来，韦丽这个人贩子以招收模特的名义把倩卖给南美一个原始部落酋长为妾。如今她回来复仇。周俅要帮倩报警，倩却坚持要亲手杀仇人。他们与韦丽展开了生死搏斗，先后身负重伤。倩在周俅的帮助下，射杀了韦丽，报了血海深仇。
《谍影迷城》:该剧以发生在湖北西南部恩施地区的"鄂西会战"为背景,讲述了1940年春,狡猾的日军为了破坏中国军队抢夺制空权而实施了所谓的"天鹰计划",派出以日军第39师团的少佐军官川口木裕(张衣饰)为首的特别行动小分队秘密潜入恩施,让他们伺机炸毁国民党恩施航空站的机群,以达到在鄂西会战时,全面掌控制空权的目的,并将此次活动命名为"大水井行动".川口木裕化名为李木浴,更变身成为大水井庄园中的漆店掌柜,一直暗中寻找机会,无奈却碰上了强劲的对手——中共地下党员覃克源(黄觉饰).原为医生的覃克源在受到重庆政府的指派后来到自己的家乡—恩施大水井庄园,欲重建地下党组织抗敌,却在一次偶然之中发现了日本人的阴谋,于是一场对决就此展开,覃克源在面对国民党,日军特务,土匪又将如何粉碎日本阴谋呢?
"So to speak, But it was only later that we found out, At that time, the smell had just dispersed, At first it just smelled bad, Nothing special, But after a while, I found something was wrong. Anyone who smells this smell, Have severe dizziness and nausea discomfort, In a short time, someone couldn't help vomiting on the position. I smelled it only a few times, and then it was also painful to churn in my stomach. Not only was my stomach uncomfortable, but my eyes were also very swollen, as if I wanted to "earn" and open my eyes to "jump" out from the inside. At that time, I thought "broken". This was not the chemical weapons used by the Vietnamese army, was it? Looking back on the common sense of the field learned during the surprise study, remember that the Vietnamese army did not have chemical weapons that would cause similar reactions? However, at that time, I felt uncomfortable patronizing and did not think further.
