Re: Mother of all Variants

From: degski (degski_at_[hidden])
Date: 2019-06-27 07:06:56

On Thu, 27 Jun 2019 at 09:54, Alexander Grund via Boost <
boost_at_[hidden]> wrote:

>
> Am 27.06.19 um 08:45 schrieb degski via Boost:
> > As from C++11 std::swap is marked noexcept, so yes. As from C++20 it's
> also
> > constexpr, so now it can definitely cannot throw.
> >
> > degski
> Are you sure? According to
> https://en.cppreference.com/w/cpp/algorithm/swap this is only
> non-throwing if it can be moved without throwing
>

 Yes, but std::swap must also not invalidate any references, pointers, or
iterators referring to the elements of the containers being swapped, which
leaves the scope for throwing rather small [if at all possible].

degski
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