Prepend< TSource >()

static IEnumerable< TSource > System.Linq.Enumerable.Prepend< TSource > ( this IEnumerable< TSource > source, TSource element )

inlinestatic

Definition at line 3692 of file Enumerable.cs.

    {
        if (source == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.source);
        }
        if (!(source is AppendPrependIterator<TSource> appendPrependIterator))
        {
            return new AppendPrepend1Iterator<TSource>(source, element, appending: false);
        }
        return appendPrependIterator.Prepend(element);
    }

References System.Linq.source, and System.Linq.ThrowHelper.ThrowArgumentNullException().