How to use C#8 IAsyncEnumerable to async-enumerate tasks run in parallel

Question

If possible I want to create an async-enumerator for tasks launched in parallel. So first to complete is first element of the enumeration, second to finish is second element of

Answer 1

Is this what you're looking for?

public static async IAsyncEnumerable ParallelEnumerateAsync(
    this IEnumerable> tasks)
{
    var remaining = new List>(tasks);

    while (remaining.Count != 0)
    {
        var task = await Task.WhenAny(remaining);
        remaining.Remove(task);
        yield return (await task);
    }
}