/// <summary>
/// Asynchronous executes the given callback method for all items in the collection and reports failures at the end.
/// </summary>
/// <typeparam name="T">Collection element type.</typeparam>
/// <param name="collection">The collection.</param>
/// <param name="continuation">The continuation to be invoked at the end of the iteration.</param>
/// <param name="userCallback">The user callback.</param>
/// <param name="logger">The logger to use for reporting.</param>
public static void AsyncForEachWithDelayedFailures <T>(this IEnumerable <T> collection, IAsyncContinuation continuation, Action <T, IAsyncContinuation> userCallback, Logger logger)
{
var continuator = new Continuator <T>(collection.GetEnumerator(), userCallback, continuation, true, logger);
continuator.ExecuteNextItem();
}
/// <summary>
/// Asynchronous executes the given callback method for all items in the collection.
/// </summary>
/// <typeparam name="T">Collection element type.</typeparam>
/// <param name="collection">The collection.</param>
/// <param name="continuation">The continuation to be invoked at the end of the iteration of whenever
/// the user callback returns an error.</param>
/// <param name="userCallback">The user callback.</param>
/// <remarks>The callback method should execute one of the methods on the passed continuation method to indicate
/// that the execution should proceed to the next item.</remarks>
public static void AsyncForEach <T>(this IEnumerable <T> collection, IAsyncContinuation continuation, Action <T, IAsyncContinuation> userCallback)
{
var continuator = new Continuator <T>(collection.GetEnumerator(), userCallback, continuation, false, Logger.Null);
continuator.ExecuteNextItem();
}