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Enumerable.Except Method

.NET Framework 4

Produces the set difference of two sequences.

This member is overloaded. For complete information about this member, including syntax, usage, and examples, click a name in the overload list.

	Name	Description
	Except<TSource>(IEnumerable<TSource>, IEnumerable<TSource>)	Produces the set difference of two sequences by using the default equality comparer to compare values.
	Except<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)	Produces the set difference of two sequences by using the specified IEqualityComparer<T> to compare values.

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FAQ

Except is sensitive when Equals and GetHashCode overriden

When several objects has same hash code and you put it in array items

items.Except(new [] {}) == empty array

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