RE: [boost] Re: Small thing: yes_type and no_type made public?

From: Hartmut Kaiser (hartmutkaiser_at_[hidden])
Date: 2003-01-07 16:34:36

David B. Held wrote:

> "Hartmut Kaiser" <hartmutkaiser_at_[hidden]> wrote in message
> news:000f01c2b691$45a3a1a0$0b00a8c0_at_fortytwo...
> > Terje Slettebø wrote:
> > > [...]
> > > typedef char (&yes_type)[1];
> > > typedef char (&no_type)[2];
> >
> > Within the Boost.Spirit library we have the need to have not only
> > two distinct (size-)types, but something around a dozen. Wouldn't it
> > be better to provide something more general as the two (size-)type
> > yes/no solution? With Boost.PP this shouldn't be any problem.
>
> You mean like:
>
> template <int N> struct size_type { char s[N]; };
>
> typedef size_type<1> false_t;
> typedef size_type<2> true_t;
> typedef size_type<3> some_other_t;
> ...

Yes. Sorry for beeing too inconsise.

Regards Hartmut