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Look at the code of the database connection pool:The above design, as commented above, when executing the Resize method of SmartTest, if a rectangular object is passed in, when the height is greater than the width, the width will be automatically increased until it exceeds the height. However, if a square object is passed in, it will fall into a dead loop. The fundamental reason at this time is that rectangles cannot be the parent class of squares. Since there is a problem, they can be reconstructed so that both of them inherit from quadrilateral classes. The refactoring code looks like this:谢胡大人。故事发生在美丽的西南边陲。由罪恶、阴谋、美色、金钱和暴力编织的黑色网络一次又一次被年轻的边防缉毒战士撕毁。即使是曙光初照的黎明，为人类健康和尊严而战的硝烟仍远未散尽。高松是南疆边防支队调研参谋，朱镇疆是边防支队副支队长。在一次临时决定的紧急抓捕行动中，由于准备不充分，使境内头号毒枭马远从暗道逃脱，而且有两名战友在战斗中牺牲。高松因此受到上级调查局的怀疑，心理压力很大。情同兄长的朱镇疆毅然为高松承担了全部责任。朱镇疆平静地脱下军装，转业到了地方的计生委。壮志未酬的朱镇疆感到分外失落，但他极力掩盖着，俨然以一位永不服输的硬汉姿态配合总队继续他一生为之奋斗的缉毒事业。高松和吕跃既是战友又是情敌。两个男人如何面对情场战场的两难选择？嬴诗曼摇头道：好什么好啊，若只是子夜一人有孕。In which tables are the rules of the chain stored (chain-to-table correspondence):