目录Service接口基本用法进阶用法总结：Lambda方法Service接口 基本用法 MyBATisPlus同时也提供了service接口，继承后一些基础的增删改查的service代码，也不需要去书写。
I have a rectangle of any arbitrary width and height. I 开发者_JAVA技巧know X,Y, width, and height. How do I solve the upper right hand coordinates when the rectangle is rotated N degrees? I realized
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