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:
1. Support simple broadcast communication. When the state of the object changes, it will automatically notify the subscribed object.
北宋末年，宋微宗昏庸无道，宦官当政，民不聊生。山东郓城以宋江为首的三十六人等楸起了风起云涌的农民起义，他们杀富济贫，行侠仗义，令统治阶级闻风丧胆，令广大百姓拍手称快。义军不断挫败官兵的围剿，兵马粮饷不断充实壮大。
(4) Electronic time relay is also called electronic time relay, which uses delay circuit to delay. This relay has high precision and small volume.
上个世纪三十年代的上海，出身贫寒的周谨意外发现自己的离奇身世，而自己的父亲又早在数十年前因不明原因离世。不明真相的周瑾一心为父亲打抱不平，合谋与青梅竹马的好友苏志文一起潜入当时在上海滩显赫一时的沈家，却意外发现在这个“淑女之家”光鲜亮丽的外表之下，实则危机重重。表里不一的大小姐方柔枝，装疯卖傻的二小姐方琪，见钱眼开的四小姐曾雨衫，以及背负着家族秘密远渡重洋的三小姐凌戈......这一切，都指引着周瑾一步步揭开谜团，找出真相。随着迷雾渐开，她却发现，在所有不可告人的秘密背后，都隐藏着无数爱和挣扎。在爱恨纠葛中，周瑾渐渐认清自己的内心，选择了光明的方向，不仅暗自追查、找出真凶，她心中的坚冰也慢慢融化，最终选择与家人一起守护家园....
……默默地看着，顾小玉最后还是发了一个帖子。
CA1, …
嗷嗷叫得欢畅，满脸兴奋，与其说是追敌，不如说是在演兵，何风的前面更是跑着无数军士——哪能让何将军打头涉险啊。
周篁点点头，低头专心吃菜——既然林队长成了亲，那他就没必要再操心了。
Top
谁在里面？陈启猛地推开门。
这部家庭美食将以两小时一小时的电影形式播出，灵感来自芭芭拉·尤潘·托德（Barbara Euphan Todd）的经典书籍，并被视为本季的电视节目。麦肯齐·克鲁克（Mackenzie Crook）占领了Scatterbrook农场和这个广受欢迎的故事的臭名昭著的人物，并为他们注入了温柔而真实的魅力。这是一次完美的家庭冒险，充满了欢乐，调皮的精神，并传递了环保信息。
First of all, we will choose heroes (take the best combination as an example, except for individual hobbies): Playing Wolf: Real Titan + Healing Angel + Medusa + Emperor 10 (Fire Dance Demon Ji) For Soul Lock Warden, It is not very suitable, Juyi Hall and the leader guard are bomb kites, which is very difficult to play bomb kites: If it is more secure (Real Titan + Ice Wing Beast's Freezing + Medusa's Petrochemical + Emperor 10 (Healing Angel/Fire Dancing Demon Ji)), if it is more calm (Real Titan + Healing Angel + Medusa/Soul Lock Warden + Emperor 10 (Ice Wing Beast/Fire Dancing Demon Ji) Play Sagittarius Punishment: Real Titan + Healing Angel + Medusa/Soul Lock Warden + Emperor 10 (Fire Dance Demon Ji) is a little looser in choosing hunting heroes.
楚王宁弈，看似风流散漫的当朝六皇子，内心却背负着惨痛往事。他以天下为棋局，洗雪冤屈、惩治奸佞、整肃朝纲，在腥风血雨的朝堂争斗中步步为营。凤知微，被逐高门之女，不甘屈服于坎坷的命运，女扮男装进入青溟书院，一跃成为无双国士魏知，风云渐起于朝野。一个是城府深藏的亲王，一个是初露锋芒的官场新秀，两人在风云诡变的朝堂里彼此试探、频频过招，相互排斥却又不自禁相互吸引。而当彼此的心渐渐向对方敞开，邂逅的却是命运彻骨的森凉
这事怎么想都违法，本来很早就可以点的，但嘉靖放话不要再搞了，这才不好点。
Stimulate
CW的DC超级英雄剧集《绿箭侠》将完结。接下来的第8季就是最后一季，共10集。主演史蒂芬·阿梅尔宣布了此消息。
First of all, let team a and team b play one match first. Who loses the match against team c after the match.
