UnionBy< TSource, TKey >() [2/2]

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

inlinestatic

Definition at line 8497 of file Enumerable.cs.

    {
        if (first == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.first);
        }
        if (second == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.second);
        }
        if (keySelector == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.keySelector);
        }
        return UnionByIterator(first, second, keySelector, comparer);
    }

References System.comparer, System.Linq.first, System.Linq.keySelector, System.Linq.second, and System.Linq.ThrowHelper.ThrowArgumentNullException().