人妻少妇精品无码专区动漫

The root of driving people to do addition (efficiency optimization) and even multiplication (efficiency optimization with leverage) is actually a greedy and impetuous heart. Of course, there are geniuses in the world, but it is unwise to bet on such a small probability event as being a genius. However, people would rather pursue the dream of ignorance than think about the most essential laws and simple methods of investment.但是自己的三万人马，一定要留下，是为前途计，也是兑现承诺和对生命的尊重。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:AzimuthAlso in the above picture9-7 Administrators: Administrators are special users. Write a class named Admin that inherits the User class you wrote to complete Exercise 9-3 or Exercise 9-5. Add an attribute named privileges to store a list of strings such as "can add post", "can delete post", "can ban user", and so on. Write a method called show_privileges () that displays the administrator's permissions. Create an Admin instance and call this method. ?