What is the facade design pattern?
问题 Is facade a class which contains a lot of other classes? What makes it a design pattern? To me, it is like a normal class. Can you explain to me this Facade pattern? 回答1: A design pattern is a common way of solving a recurring problem. Classes in all design patterns are just normal classes. What is important is how they are structured and how they work together to solve a given problem in the best possible way. The Facade design pattern simplifies the interface to a complex system; because it