ExceptByIterator< TSource, TKey >()

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

inlinestaticprivate

Definition at line 4817 of file Enumerable.cs.

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

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