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The policy mode is the packaging of the algorithm, which separates the responsibility of using the algorithm from the algorithm itself and delegates it to different objects. Policy patterns usually wrap a series of algorithms into a series of policy classes. To encapsulate the policy pattern in one sentence is to "encapsulate each algorithm into a different policy class so that they can be interchanged". The following is the structure diagram of the policy mode:2018-03-03 22:10:38根据1980年艾伦-帕克导演的经典歌舞片《名扬四海》改编。玉米……玉米被狼吃了？这怎么可能？孙铁他们干啥去了？他奔跑了这些日子，刚才又承受绝望的打击，满心凄凉。上世纪20年代的香港，人称鬼王少帅的西泽奉命捉拿叛徒，却因为五块钱和大学生陆小葵不打不相识。两人就此结下奇妙缘分。西泽向来玩世不恭桀骜不驯，父亲特意找来军官大学的优秀生想将其“驯服”，没想到找来的竟然就是陆小葵，陆小葵品学兼优，尤其擅长国学礼仪。她坚信“知识改变命运”，一直憧憬着将年幼的弟弟送入学堂上学。两人在课堂上斗智斗勇，针锋相对，俨然一对欢喜冤家。就在陆小葵对西泽产生好感之际，西泽却告诉陆小葵，他是她绝对不能爱上的人，重重疑雾笼罩着陆小葵，一对有情人将何去何从。9-12 Multiple Modules: Store User classes in one module and Privileges and Admin classes in another module. Create another file, create an Admin instance in it, and call the method show_privileges () on it to make sure everything is still running correctly. ?