From: Jérémie Laval <jeremie.laval@gmail.com>
Date: Wed, 5 Sep 2012 13:36:58 +0000 (+0100)
Subject: [System.Core] Remove a source of generic indirection for GroupBy
X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=commitdiff_plain;h=02d23e2e36b08923efea18a36be30b78ee3ab01a;p=mono.git

[System.Core] Remove a source of generic indirection for GroupBy
---

diff --git a/mcs/class/System.Core/System.Linq/ParallelEnumerable.cs b/mcs/class/System.Core/System.Linq/ParallelEnumerable.cs
index 6d9e637b4c9..63eea9afd95 100644
--- a/mcs/class/System.Core/System.Linq/ParallelEnumerable.cs
+++ b/mcs/class/System.Core/System.Linq/ParallelEnumerable.cs
@@ -608,7 +608,7 @@ namespace System.Linq
 		                                                                              Func<TSource, TKey> keySelector,
 		                                                                              IEqualityComparer<TKey> comparer)
 		{
-			return source.GroupBy (keySelector, (e) => e, comparer);
+			return source.GroupBy (keySelector, new Identity<TSource> ().Apply, comparer);
 		}
 		
 		public static ParallelQuery<IGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement> (this ParallelQuery<TSource> source,
@@ -2243,6 +2243,17 @@ namespace System.Linq
 			throw new NotSupportedException ();
 		}
 		#endregion
+
+		#region Helpers
+
+		class Identity<T>
+		{
+			public T Apply (T input)
+			{
+				return input;
+			}
+		}
+		#endregion
 	}
 }
 #endif