public static async Task ForAllAsync <T>(this IEnumerableAsync <T> items, T action)
{
var iterator = items.GetIterator();
await iterator.IterateAsync(action);
// while (await enumerator.MoveNextAsync(action)) { };
}
public static IEnumerableAsync <T> PrespoolAsync <T>(this IEnumerableAsync <T> items)
{
var iterator = items.GetIterator();
var queue = new ConcurrentQueue <Func <T, Task> >();
var totalExpression = GetTotalExpression <T>();
var basicExpression = totalExpression(queue);
var iterationTask = iterator.IterateAsync(basicExpression);
return(EnumerableAsync.YieldAsync <T>(
async(yieldAsync) =>
{
while (!iterationTask.IsCompleted ||
queue.Count() > 0)
{
Func <T, Task> callback;
if (queue.TryDequeue(out callback))
{
await callback(yieldAsync);
}
}
}));
}