A brief discussion on basic review and core architecture design

Preface The blogger simply counted the asynchronous articles he has published, and there are already 8 intermittently. This time I want to take the return type of async as an example and talk about it separately. Asynchronous methods have three possible return types: Task, Task, and void. When does one need to use which return type? The specific situation requires specific analysis. If used improperly, the execution result of the program may not be what you want. Let's talk about how to choose different return types for different situations. Task [Remember] When you add the async keyword, you need to return an object that will be used for subsequent operations, please use Task. The Task return type can be used with certain asynchronous methods where the operands have type TResult. In the following example, the GetDateTimeAsync asynchronous method contains a return statement that returns the current time. Therefore, the method declaration must specify Task<

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