1 files changed, 0 insertions, 80 deletions
diff --git a/Rx.NET/System.Reactive.Core/Reactive/Disposables/SingleAssignmentDisposable.cs b/Rx.NET/System.Reactive.Core/Reactive/Disposables/SingleAssignmentDisposable.cs
deleted file mode 100644
index 8931c25..0000000
--- a/Rx.NET/System.Reactive.Core/Reactive/Disposables/SingleAssignmentDisposable.cs
+++ /dev/null
@@ -1,80 +0,0 @@
-// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
-
-using System.Threading;
-
-namespace System.Reactive.Disposables
-{
-    /// <summary>
-    /// Represents a disposable resource which only allows a single assignment of its underlying disposable resource.
-    /// If an underlying disposable resource has already been set, future attempts to set the underlying disposable resource will throw an <see cref="T:System.InvalidOperationException"/>.
-    /// </summary>
-    public sealed class SingleAssignmentDisposable : ICancelable
-    {
-        private volatile IDisposable _current;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="T:System.Reactive.Disposables.SingleAssignmentDisposable"/> class.
-        /// </summary>
-        public SingleAssignmentDisposable()
-        {
-        }
-
-        /// <summary>
-        /// Gets a value that indicates whether the object is disposed.
-        /// </summary>
-        public bool IsDisposed
-        {
-            get
-            {
-                // We use a sentinel value to indicate we've been disposed. This sentinel never leaks
-                // to the outside world (see the Disposable property getter), so no-one can ever assign
-                // this value to us manually.
-                return _current == BooleanDisposable.True;
-            }
-        }
-
-        /// <summary>
-        /// Gets or sets the underlying disposable. After disposal, the result of getting this property is undefined.
-        /// </summary>
-        /// <exception cref="InvalidOperationException">Thrown if the SingleAssignmentDisposable has already been assigned to.</exception>
-        public IDisposable Disposable
-        {
-            get
-            {
-                var current = _current;
-
-                if (current == BooleanDisposable.True)
-                    return DefaultDisposable.Instance; // Don't leak the sentinel value.
-
-                return current;
-            }
-
-            set
-            {
-#pragma warning disable 0420
-                var old = Interlocked.CompareExchange(ref _current, value, null);
-#pragma warning restore 0420
-                if (old == null)
-                    return;
-
-                if (old != BooleanDisposable.True)
-                    throw new InvalidOperationException(Strings_Core.DISPOSABLE_ALREADY_ASSIGNED);
-
-                if (value != null)
-                    value.Dispose();
-            }
-        }
-
-        /// <summary>
-        /// Disposes the underlying disposable.
-        /// </summary>
-        public void Dispose()
-        {
-#pragma warning disable 0420
-            var old = Interlocked.Exchange(ref _current, BooleanDisposable.True);
-#pragma warning restore 0420
-            if (old != null)
-                old.Dispose();
-        }
-    }
-}