On 7 May 2016 at 00:39, Marc Glisse <marc.gli...@inria.fr> wrote: > Assuming we want the copy constructor to be defaulted, I think we still > could with concepts: > > tuple(tuple const&) > requires(__and_<is_copy_constructible<_Elements>...>::value) > = default; > > While there is precedent for enabling C++11 features in C++03 mode inside > system headers, I guess maintainers might be more reluctant for something > that is only heading for a TS for now.
Much as I'd like to go towards that direction, I don't think we can, yet, at least not as our default implementation, because front-ends like clang wouldn't be able to compile our library. >> I think the patch is ok, but I think it would be a good idea to have a >> comment on the added tag type and its purpose. > Indeed. I wasn't sure if people preferred more tags or more enable_if... I don't have a strong opinion if there's implementation choice between those.
