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//----------------------------------------------------------------
// <copyright company="Microsoft Corporation">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//----------------------------------------------------------------
namespace Microsoft.Activities.Presentation.Xaml
{
using System.Collections.Generic;
using System.Runtime.CompilerServices;
internal sealed class ObjectReferenceEqualityComparer<T> : IEqualityComparer<T> where T : class
{
private static ObjectReferenceEqualityComparer<T> defaultComparer;
private ObjectReferenceEqualityComparer()
{
}
public static ObjectReferenceEqualityComparer<T> Default
{
get
{
if (defaultComparer == null)
{
defaultComparer = new ObjectReferenceEqualityComparer<T>();
}
return defaultComparer;
}
}
public bool Equals(T x, T y)
{
return object.ReferenceEquals(x, y);
}
public int GetHashCode(T obj)
{
return RuntimeHelpers.GetHashCode(obj);
}
}
}
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