Documentation

TODO

Code samples

1) The simpliest way of creating asyncronous operations is using AsyncResult static helpers.

var op1 = AsyncResult.FromEnumerator(GetEnum());
var op2 = AsyncResult.FromCoroutine(StartCoroutine(GetEnum()));
var op3 = AsyncResult.FromCoroutine(new WaitForSeconds(2));
var op4 = AsyncResult.FromAsyncOperation(SceneManager.LoadSceneAsync("TestScene"));
var op5 = AsyncResult.FromUpdateCallback<int>(c => c.SetResult(20));

2) There are several helpers that create completed operations:

var op1 = AsyncResult.CompletedOperation;
var op2 = AsyncResult.FromCanceled();
var op3 = AsyncResult.FromException(new Exception());
var op5 = AsyncResult.FromResult(20);

3) You can use yield and await to wait for IAsyncOperation instances without blocking the calling thread (obviously await cannot be used on .NET 3.5):

IEnumerator TestYield()
{
    yield return AsyncResult.FromEnumerator(GetEnum());
}

async Task TestAwait()
{
    await AsyncResult.FromEnumerator(GetEnum());
}

4) Each IAsyncOperation maintains its status value (just like Task:

var op = AsyncResult.FromEnumerator(GetEnum());
yield return op;

if (op.IsCompletedSuccessfully)
{
    // could also check op.Status
}

5) Operations can be chained together very much like Tasks instances:

var op1 = AsyncResult.Delay(TimeSpan.FromSeconds(10));
var op2 = op1.ContinueWith(op => AsyncResult.FromEnumerator(GetEnum()));