1 files changed, 34 insertions, 0 deletions
diff --git a/Rx.NET/System.Reactive.Experimental/Reactive/Internal/BinaryObserver.cs b/Rx.NET/System.Reactive.Experimental/Reactive/Internal/BinaryObserver.cs
new file mode 100644
index 0000000..19cdb2d
--- /dev/null
+++ b/Rx.NET/System.Reactive.Experimental/Reactive/Internal/BinaryObserver.cs
@@ -0,0 +1,34 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+namespace System.Reactive
+{
+    class BinaryObserver<TLeft, TRight> : IObserver<Either<Notification<TLeft>, Notification<TRight>>>
+    {
+        public BinaryObserver(IObserver<TLeft> leftObserver, IObserver<TRight> rightObserver)
+        {
+            LeftObserver = leftObserver;
+            RightObserver = rightObserver;
+        }
+
+        public BinaryObserver(Action<Notification<TLeft>> left, Action<Notification<TRight>> right)
+            : this(left.ToObserver(), right.ToObserver())
+        {
+        }
+
+        public IObserver<TLeft> LeftObserver { get; private set; }
+        public IObserver<TRight> RightObserver { get; private set; }
+
+        void IObserver<Either<Notification<TLeft>, Notification<TRight>>>.OnNext(Either<Notification<TLeft>, Notification<TRight>> value)
+        {
+            value.Switch(left => left.Accept(LeftObserver), right => right.Accept(RightObserver));
+        }
+
+        void IObserver<Either<Notification<TLeft>, Notification<TRight>>>.OnError(Exception exception)
+        {
+        }
+
+        void IObserver<Either<Notification<TLeft>, Notification<TRight>>>.OnCompleted()
+        {
+        }
+    }
+}