Re: [boost] [typeof] registration question

Subject: Re: [boost] [typeof] registration question
From: Cromwell Enage (sponage_at_[hidden])
Date: 2012-04-14 02:37:37

lcaminti wrote:


> This works:
> 
> #include <boost/typeof/typeof.hpp>
> #include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
> #include <boost/array.hpp>
> 
> BOOST_TYPEOF_REGISTER_TEMPLATE(boost::array,
>         (typename)(BOOST_TYPEOF_INTEGRAL(std::size_t)))
> 
> int main() { return 0; }

It works, indeed.

> Read 3rd remark at:
> http://www.boost.org/doc/libs/1_41_0/doc/html/typeof/refe.html#typeof.regtemp
> 
> ``Enums and typedefs of integral types, need to be described explicitly with
> the BOOST_TYPEOF_INTEGRAL macro, like (BOOST_TYPEOF_INTEGRAL(MyEnum))''

So THAT's what that macro is used for.

> If you use size_t instead of std::size_t then it works even without the
> INTEGRAL (read 2nd remark same link).

Okay, I just need to be careful in avoiding type ambiguities, e.g. with boost::mpl::size_t.

Thanks, again!
Cromwell D. Enage