岛国免费完整在线观看

《笑场》全国首档脱口秀专场演出节目。李诞为推荐人，每期推荐一位脱口秀演员围绕时下热门话题进行表演。表演嘉宾有呼兰、思文、程璐、Rock、张博洋、梁海源和庞博。才忍笑道：鸡叫了，天亮了。夏 雨饰俞佩玉再有，你也没明说，怕是她还不敢奢望，所以不好说的。③ SENTINEL slaves海边住着一个勤劳的青年，他每天出海打渔，有一天他一条鱼都没捕到但却捞着了一只金色的海螺，青年把海螺放在水缸里。每当青年出海的时候，海螺便会变成一位美丽的少女帮他煮饭、缝衣，原来海螺是南海仙女变成的，她早已对青年芳心暗许。但是这一切被蓝海仙女的母亲海神娘娘发现了，她狠心拆散了青年与仙女，但经过青年的不懈努力，海神娘娘终于被他打动，青年与海螺仙女幸福地生活在了一起。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