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"Is there any big mouse like that you mentioned before?" I asked.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:The real essence of this book is the above. However, in order to deny "talent determinism", the author cited a lot of papers and practical examples, resulting in some "tedious". Before proposing what it is and how to do it, the author made a demonstration and quoted extensively.(6) Relationship between draft and available water depth.本王答应你了。First, let's talk about scenario, and distribute the content according to the scene where users use the product. For example, users place orders for tickets in Cat's Eye movies, and after the completion, there are actually other needs for scenes.Http://m.jiemian.com/article/2028492.html