scenario: write an order (order master record and order detail record) json backend service layer has added api order_master func: add order_detail func: add ask whether the detail record in json is inserted by controller ca...
there are several problems in the process of learning architecture: some Service layers will call other Dao layers, for example, UserService will call UserPositionDao UserBookDao some Service layers will call other Service layers, for example, Use...
there is a class that has a lot of properties. Now I have a lot of other roles. Different roles use different fields. What design pattern do you use? ...
each person starts the game with a different Rank (a total of 14 Rank) and selects two people to answer the question pk,. How to design this algorithm? suppose that after I click to start the game, I send my request to enter a game to the server, and ...