AsyncEnumerator 1.1.0

Introduces IAsyncEnumerable, IAsyncEnumerator, ForEachAsync(), and ParallelForEachAsync()
GitHub: https://github.com/tyrotoxin/AsyncEnumerable

PROBLEM SPACE

Helps to (a) create an element provider, where producing an element can take a lot of time
due to dependency on other asynchronous events (e.g. wait handles, network streams), and
(b) a consumer that processes those element as soon as they are ready without blocking
the thread (the processing is scheduled on a worker thread instead).


EXAMPLE

using System.Collections.Async;

static IAsyncEnumerable<int> ProduceAsyncNumbers(int start, int end)
{
 return new AsyncEnumerable<int>(async yield => {

   // Just to show that ReturnAsync can be used multiple times
   await yield.ReturnAsync(start);

   for (int number = start + 1; number <= end; number++)
     await yield.ReturnAsync(number);

   // You can break the enumeration loop with the following call:
   yield.Break();

   // This won't be executed due to the loop break above
   await yield.ReturnAsync(12345);
 });
}

// Just to compare with synchronous version of enumerator
static IEnumerable<int> ProduceNumbers(int start, int end)
{
 yield return start;

 for (int number = start + 1; number <= end; number++)
   yield return number;

 yield break;

 yield return 12345;
}

static async Task ConsumeNumbersAsync()
{
 var asyncEnumerableCollection = ProduceAsyncNumbers(start: 1, end: 10);
 await asyncEnumerableCollection.ForEachAsync(async number => {
   await Console.Out.WriteLineAsync($"{number}");
 });
}

// Just to compare with synchronous version of enumeration
static void ConsumeNumbers()
{
 // NOTE: IAsyncEnumerable is derived from IEnumerable, so you can use either
 var enumerableCollection = ProduceAsyncNumbers(start: 1, end: 10);
 //var enumerableCollection = ProduceNumbers(start: 1, end: 10);

 foreach (var number in enumerableCollection) {
   Console.Out.WriteLine($"{number}");
 }
}

There is a newer version of this package available.
See the version list below for details.
The owner has unlisted this package. This could mean that the package is deprecated or shouldn't be used anymore.
Install-Package AsyncEnumerator -Version 1.1.0
dotnet add package AsyncEnumerator --version 1.1.0
paket add AsyncEnumerator --version 1.1.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

Add ParallelForEachAsync extension methods for IEnumerable<T> and IAsyncEnumerable<T> in System.Collections.Async namespace.

Dependencies

This package has no dependencies.

Version History

Version Downloads Last updated
2.2.1 55,936 5/29/2018
2.2.0 4,285 5/18/2018
2.1.1 46,908 1/20/2018
2.1.0 105,736 5/22/2017
2.0.1 35,897 2/13/2017
1.5.0 2,301 2/12/2017
1.4.2 834 2/6/2017
1.3.0 1,111 1/20/2017
1.2.3 6,105 1/6/2017
1.2.2 950 12/11/2016
1.2.1 196 12/10/2016
1.2.0 6,008 11/29/2016
1.1.3 206 11/28/2016
1.1.2 10,629 8/29/2016
1.0.3 1,221 4/28/2016
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