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Re: [PATCH] PR77528 add default constructors for container adaptors
On Wed, Jan 11, 2017 at 7:21 AM, Jonathan Wakely <jwakely@redhat.com> wrote:
> This patch uses the _Enable_default_constructor mixin to properly
> delete the default constructors. It's a bit cumbersome, because we
> have to add an initializer for the base class to every
> ctor-initializer-list, but I think I prefer this to making the default
> constructor a constrained template.
>
I'm happy with either approach - my primary concern is making sure
that is_constructible and friends work and don't lie, in a world where
increasing numbers of library components depend on it. Though I'm a
bit curious as to why you found this approach more preferable.
Re the new DMI, my brain compiler says that _Sequence c = _Sequence();
breaks anything with an explicit copy/move constructor pre-C++17, but
I also don't think we care about those, right?