UnionByIterator< TSource, TKey >()

static IEnumerable< TSource > System.Linq.Enumerable.UnionByIterator< TSource, TKey > ( IEnumerable< TSource > first, IEnumerable< TSource > second, Func< TSource, TKey > keySelector, IEqualityComparer< TKey > comparer )

inlinestaticprivate

Definition at line 8514 of file Enumerable.cs.

    {
        HashSet<TKey> set = new HashSet<TKey>(7, comparer);
        foreach (TSource item in first)
        {
            if (set.Add(keySelector(item)))
            {
                yield return item;
            }
        }
        foreach (TSource item2 in second)
        {
            if (set.Add(keySelector(item2)))
            {
                yield return item2;
            }
        }
    }

References System.Add, System.comparer, System.Linq.first, System.item, System.Linq.keySelector, and System.Linq.second.