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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
using System;
using System.Collections.Generic;
namespace System.Reactive
{
abstract class ConcatSink<TSource> : TailRecursiveSink<TSource>
{
public ConcatSink(IObserver<TSource> observer, IDisposable cancel)
: base(observer, cancel)
{
}
protected override IEnumerable<IObservable<TSource>> Extract(IObservable<TSource> source)
{
var concat = source as IConcatenatable<TSource>;
if (concat != null)
return concat.GetSources();
return null;
}
public override void OnCompleted()
{
_recurse();
}
}
}
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