c# - 返回已完成任务的最佳方法是什么？

Question

返回完成的 Task 的最佳方式是什么？目的？

可以写成 Task.Delay(0) , 或 Task.FromResult<bool>(true) 任何。

但是最有效的方法是什么？

Answer 1

Stephen Toub (MSFT) 的回答:

If you want a new Task object each time, Task.FromResult is the most efficient. Task.Delay(0) in its current implementation will return a cached task, but that's an implementation detail. If you want to use a cached task, you should cache one yourself, e.g. private static readonly Task s_completedTask = Task.FromResult(true); and then use s_completedTask.