2013年1月22日 · When you use await, it sets the rest of the method as a continuation to be executed when whatever you await-ed is complete. It exits the method that you used it in, so the caller can continue. Then when the await-ed line is actually complete, it finishes the remainder of that method on some thread (usually a worker thread). –

2016年1月16日 · In contrast to await task created in such a way is differ from original inner task. See the Unwrap() docs, ...

2019年8月10日 · I'm starting to learn about async / await in C# 5.0, and I don't understand it at all. I don't understand how it can be used for parallelism. I've tried the following very basic program: using Sys...

async function test() { return await apiOn( 'someEvent' ); // await is actually optional here // you'd return a Promise either way. But that's a lie too, because async functions also return Promises themselves, so you aren't going to actually get the value out of test() , but rather, a Promise for a value, which you can use like so:

2020年9月18日 · @Anakhand I agree with the sentiment, although specifying it is harder than it seems, since await is a very general mechanism which could be used for control flow not tied to a classic event loop. But even so, awaited objects always need ,some sort of driver. I understand that they wouldn't mention asyncio specifically, as it might have still ...

2016年6月2日 · After the await defers the continuation of the async function, execution of subsequent statements ensues. If this await is the last expression executed by its function execution continues by returning to the function's caller a pending Promise for completion of the await's function and resuming execution of that caller.

Cannot await 'System.Threading.Tasks.Task' on the "await" line Cannot convert expression type 'System.Net.Http.Content' to return type 'string' I've been attempting to write the above code that will download a string from a web service, but there seems to be a lot of conflicting information about how to use async and await and how to use ...

2016年1月26日 · var inputs = await events .SelectAsync(async ev => await ProcessEventAsync(ev)) .ToListAsync(); Update: Alternatively you can add a reference to System.Linq.Async and then you can say: var inputs = await events .ToAsyncEnumerable() .SelectAwait(async ev => await ProcessEventAsync(ev)) .ToListAsync();

2012年9月17日 · The async modifier just tells the compiler to generate an async state machine to manage any await keywords it encounters within the method (more to manage the lines after the awaits). It doesn't do anything as far as externally viewing the method. i.e., it doesn't make the method usable by await. await only depends on the method returning a ...

2011年9月8日 · While similar to Task.Wait at a high level (i.e. forward progress isn’t made until the task completes), “await task” represents a very different primary set of scenarios. Rather than being used for fork/join parallelism, the most common usage of “await task” is in taking a sequential, synchronous piece of code and turning it into a ...