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| author | Jb Evain <jbevain@gmail.com> | 2008-11-20 15:57:59 +0300 |
|---|---|---|
| committer | Jb Evain <jbevain@gmail.com> | 2008-11-20 15:57:59 +0300 |
| commit | 0058cfe9758bb4a4a6af058843a88420c7e14a85 (patch) | |
| tree | 12a5356011d4b2f829f050d8c41e1f31be9d58d0 /mcs/class/System.Core/System.Linq/Enumerable.cs | |
| parent | eda8d0a80ead08377d9c38d5024720af149fe76e (diff) | |
2008-11-20 Jb Evain <jbevain@novell.com>
* Enumerable.cs (Any): optimize if we're operating on an ICollection.
svn path=/trunk/mcs/; revision=119433
Diffstat (limited to 'mcs/class/System.Core/System.Linq/Enumerable.cs')
| -rw-r--r-- | mcs/class/System.Core/System.Linq/Enumerable.cs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mcs/class/System.Core/System.Linq/Enumerable.cs b/mcs/class/System.Core/System.Linq/Enumerable.cs index ac06748b64a..75d4b20c124 100644 --- a/mcs/class/System.Core/System.Linq/Enumerable.cs +++ b/mcs/class/System.Core/System.Linq/Enumerable.cs @@ -116,6 +116,10 @@ namespace System.Linq { Check.Source (source); + var collection = source as ICollection<TSource>; + if (collection != null) + return collection.Count > 0; + using (var enumerator = source.GetEnumerator ()) return enumerator.MoveNext (); } |