IntersectWith()

void System.Collections.Generic.HashSet< T >.IntersectWith ( IEnumerable< T > other )

inline

Implements System.Collections.Generic.ISet< T >.

Definition at line 470 of file HashSet.cs.

    {
        if (other == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.other);
        }
        if (Count == 0 || other == this)
        {
            return;
        }
        if (other is ICollection<T> collection)
        {
            if (collection.Count == 0)
            {
                Clear();
                return;
            }
            if (other is HashSet<T> hashSet && EqualityComparersAreEqual(this, hashSet))
            {
                IntersectWithHashSetWithSameComparer(hashSet);
                return;
            }
        }
        IntersectWithEnumerable(other);
    }

References System.Collections.Generic.HashSet< T >.Clear(), System.collection, System.Collections.Generic.HashSet< T >.Count, System.Collections.Generic.HashSet< T >.EqualityComparersAreEqual(), System.Collections.Generic.HashSet< T >.IntersectWithEnumerable(), System.Collections.Generic.HashSet< T >.IntersectWithHashSetWithSameComparer(), System.other, and System.ThrowHelper.ThrowArgumentNullException().