Re: [Boost-users] trick to print a type at compile-time

9 Sep 2010

      ...
-----Original Message-----
From: boost-users-bounces@lists.boost.org [mailto:boost-users-
bounces@lists.boost.org] On Behalf Of Dave Abrahams
Sent: 08 September 2010 14:58
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] trick to print a type at compile-time
On Wed, Sep 8, 2010 at 8:56 AM, Eric Niebler <eric@boostpro.com> wrote:
...
boost::mpl::print in boost/mpl/print.hpp. Neither seem to be
documented.
mpl::print is mostly good for those cases where you need to *not*
cause a compilation error, perhaps because you are trying to follow
recursive instantiations.  Otherwise, I'd go with an explicit error;
you'll get less noise.
I tried both ways:

boost::mpl::print<result_type> myvar; 

and 

template <typename T>
struct print_error {
};
typedef typename print_error<result_type>::type my_print_error;
my_print_error myvar;

In both cases, the bit in the error in msvc2008 just shows:

1>        with
1>        [
1>            T=result_type
1>        ]

it doesn't print what that type actually is.

regards,

Re: [Boost-users] trick to print a type at compile-time

Hicham Mouline