Concat< TSource >()

static IEnumerable< TSource > System.Linq.Enumerable.Concat< TSource > ( this IEnumerable< TSource > first, IEnumerable< TSource > second )

inlinestatic

Definition at line 4380 of file Enumerable.cs.

    {
        if (first == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.first);
        }
        if (second == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.second);
        }
        if (!(first is ConcatIterator<TSource> concatIterator))
        {
            return new Concat2Iterator<TSource>(first, second);
        }
        return concatIterator.Concat(second);
    }

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