Spliterators of iterators

[Martin Buchholz]

On Wed, Jun 17, 2015 at 1:36 AM, Paul Sandoz <paul.sandoz at oracle.com> wrote:

>
> > """A top-level Spliterator should not report both CONCURRENT and
> IMMUTABLE, since they are mutually exclusive. Such a Spliterator is
> inconsistent and no guarantees can be made about any computation using that
> Spliterator. Sub-spliterators may report IMMUTABLE if additions or removals
> to the source are not reflected when traversing."""
>
>
> Yes, sub-spliterators may additionally report.
>
> I guess i don't have a strong opinion on modifying sub-spliterators of
> certain concurrent collections to additionally report IMMUTABLE. My
> inclination is not to bother but i would not strongly object if someone
> else did :-)
>

I agree with you that it probably doesn't matter much in practice.  But
we're trying to create very high quality software here, and there should be
a clear way of deciding when to report IMMUTABLE, and at least in openjdk
proper we should be consistent about it.