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Possible Duplicate:
Linq .Any VS .Exists – Whats the difference?
Is there a performance difference between using any vs exists in a LINQ query? Specifically LINQ to Entities.
Existsrequires an instance ofList<T>whileAnyis invoked onIEnumerable<T>. This means you have the potential for increased memory efficiency asIEnumerable<T>can be evaluated lazily.