Move
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
————感谢书友【坚决不掏钱】的588慷慨打赏，感谢书友【雨后彩虹wz】的慷慨打赏。
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若是仙人指路，这仙人有问题。
电视剧《一个人战争》讲诉了发生在真实和残酷的抗战背景下，在紧凑的8天内一小队特殊组合的人群的抗战故事。
那你该知道，这样让我好难受呢。
其他如菜地里的青菜。
Step 2: Press and hold the power key/power key for 3 seconds. In this step, the iPhone will turn on, regardless of what appears on the iPhone, White Apple or iTunes + USB.
Fifteen pupils and their teachers embark on an extraordinary time-travelling adventure as they fast-forward through more than 100 years of school life.
8. Enter "" on the command line to see the following results:
不过虞子期没有放过他，一直紧紧咬着追击，如今刘邦在樊哙和周勃的保护下，正朝着萧县而来。
陆炳眼皮渐渐垂下，弥留之时又猛然睁开，突然抓住了嘉靖的双臂：就一句话，臣最后再说一句话。
When the factory is a function, it represents the construction method of the module, and the interface provided by the module can be obtained by executing the construction method.
The attacker forges the source ip address of the syn as the ip address of the target, and the server response is sent directly to the target
亚父。
年轻的海克力斯爱上美女希碧公主，父王却将她许配给兄长。二人打算私奔之际，海克力斯被父王的护卫逮住，他被罚战死沙场。海克力斯大难不死，更与战友索迪裡斯誓言推翻父王，同时救出爱人，令他成为史上最伟大的古希腊英雄之一。
风间俊介主演"日本第一残念"的刑警・押井。虽然每次都靠着超群的推理能力将犯人逼入绝境，但总是在最后的最后事态发生大逆转。所有的功劳都被同事刑警抢走。
Last week, the Shanghai Municipal Government and Xiaomi Group signed a strategic cooperation framework agreement in Shanghai. The latter will lay out financial technology, Internet of Things and industrial design businesses in Shanghai. Its newly-built innovation center will also be located in Xuhui Binjiang, focusing on the construction of Xiaomi Financial Headquarters, Xiaomi Internet of Things Headquarters and Xiaomi Industrial Design Center.
“刀锋战士”系列完结篇。当末日启示即将实现，人类将全数成为吸血鬼的爪牙，刀锋求战士是唯一能够破解此道预言的人，于是吸血鬼王运用挑拨离间计策，误导人类将矛头指向半人半吸血鬼的刀锋战士。
