David Vandevoorde wrote:
> One of the issues that arise is header dependencies… do we really want to
> require that <vector> and <string> be included for any code that does
> something nontrivial with reflections? Maybe “yes”, and maybe that’ll be less
> of a concern with modules?
>
> Meanwhile, our (Faisal & I) current implementation uses std::string_view (with
> some assumptions about its internal structure) and a very simple
> vector<info>-like class that’s part of the <meta> header.

That's another reason I prefer `char const*` - I don't find it elegant when
compiler built-ins have to know about user-defined types such as `string_view`.