You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
43 lines
1.1 KiB
43 lines
1.1 KiB
|
|
#ifndef BOOST_MPL_AUX_EMPTY_IMPL_HPP_INCLUDED |
|
#define BOOST_MPL_AUX_EMPTY_IMPL_HPP_INCLUDED |
|
|
|
// Copyright Aleksey Gurtovoy 2000-2004 |
|
// |
|
// Distributed under the Boost Software License, Version 1.0. |
|
// (See accompanying file LICENSE_1_0.txt or copy at |
|
// http://www.boost.org/LICENSE_1_0.txt) |
|
// |
|
// See http://www.boost.org/libs/mpl for documentation. |
|
|
|
// $Id: empty_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
|
// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
|
// $Revision: 49267 $ |
|
|
|
#include <boost/mpl/empty_fwd.hpp> |
|
#include <boost/mpl/begin_end.hpp> |
|
#include <boost/mpl/aux_/traits_lambda_spec.hpp> |
|
#include <boost/type_traits/is_same.hpp> |
|
|
|
namespace boost { namespace mpl { |
|
|
|
// default implementation; conrete sequences might override it by |
|
// specializing either the 'empty_impl' or the primary 'empty' template |
|
|
|
template< typename Tag > |
|
struct empty_impl |
|
{ |
|
template< typename Sequence > struct apply |
|
: is_same< |
|
typename begin<Sequence>::type |
|
, typename end<Sequence>::type |
|
> |
|
{ |
|
}; |
|
}; |
|
|
|
BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(1,empty_impl) |
|
|
|
}} |
|
|
|
#endif // BOOST_MPL_AUX_EMPTY_IMPL_HPP_INCLUDED
|
|
|