.AsParallel() for IAsyncEnumerable

[TonyValenti]

Is there something like this? I'd like to fan my IAsyncEnumerable out to multiple processors just like I can with a regular enumerable.

[stephentoub]

await Parallel.ForEachAsync(yourAsyncEnumerable, async item =>
{
    ...
});

[jnm2]

I commonly have a similar need except the lambda returns a value and I need an ordered list of results at the end. I wish this was possible:

SomeResult[] results = await Parallel.ForEachAsync(
    asyncOrNonAsyncEnumerable,
    new ParallelOptions { MaxDegreeOfParallelism = 5 },
    async item =>
    {
        return await HitSomeApiAsync(item);
    });

I might start a proposal if I can't find anything like this.