欧美亚洲日韩国产区三

If Columbus's last great geographical discovery expanded the physical space of human beings. Then this great geographical discovery has expanded people's digital space. In the mathematical space, establish a new commercial civilization, thus discovering a new mode of wealth creation and bringing new wealth space to human society. Cloud computing, big data, Internet of Things and block chain are ships entering this digital space, and artificial intelligence is the sail of that ship, Columbus sail!本片是我们周边存在的人生和车的故事。这场战斗拼的不是准头，而是弹药数量，到达最远射程就开始打，不遗余力的打。徐文长考试的命运，在某种程度上掌握在他的手中。User class unified interface, User1 and User2 are different objects respectively, and they are related. If the mediator mode is not adopted, the two need to hold references to each other, so the coupling degree between the two is very high. In order to decouple, the Mediator class is introduced to provide unified interface, and MyMediator is its implementation class, which holds instances of User1 and User2 to control User1 and User2. In this way, User1 and User2 objects are independent of each other. They only need to maintain a good relationship with the Mediator, and the rest is maintained by the MyMediator class! Basic implementation: