Re: Mother of all Variants

From: David Sankel (camior_at_[hidden])
Date: 2019-06-27 02:03:06

On Wed, Apr 17, 2019 at 8:42 AM Andrzej Krzemienski via Boost <
boost_at_[hidden]> wrote:

> wt., 16 kwi 2019 o 23:57 Richard Hodges via Boost <boost_at_[hidden]>
> napisał(a):
>
> > Are there real-world examples of well-designed classes who's move
> > assignment operators throw?
> >
> > I think if I saw that in a code review I'd be inclined to demand a
> > different design choice.
> >
> > Is there a good reason that variants should support such classes?
> >
>
> Some implementations of std::list throw from their move constructors and
> default constructors. I understand that the implementation is easier if
> even an empty list has a dummy node, which requires allocation.
>

Also classes that use the PIMPL idiom.