c# Task.FromResult 的基本用法和实例
This method is useful when you perform an asynchronous operation that returns a Task object, and the result of that Task object is already computed
There are two common use cases I've found:
- When you're implementing an interface that allows asynchronous callers, but your implementation is synchronous.
- When you're stubbing/mocking asynchronous code for testing
上面总体来说是用于单元测试;
然后还有在我们读取缓存的时候有用; 微软官方博客实例;
https://docs.microsoft.com/en-us/dotnet/standard/parallel-programming/how-to-create-pre-computed-tasks
上面的思想:
This method is useful when you perform an asynchronous operation that returns a Task object, and the result of that Task object is already computed.
已经计算出来了,或者已经缓存好了,基本想要的值;
这里添加一个基本的链接功能:
那就是我们的异步方法中的 进度报告的问题;https://social.technet.microsoft.com/wiki/contents/articles/19020.progress-of-a-task-in-c.aspx
效果是非常好的呀;