| #ifndef BOOST_IS_PLACEHOLDER_HPP_INCLUDED | |
| #define BOOST_IS_PLACEHOLDER_HPP_INCLUDED | |
| // MS compatible compilers support #pragma once | |
| #if defined( _MSC_VER ) && ( _MSC_VER >= 1020 ) | |
| # pragma once | |
| #endif | |
| // is_placeholder.hpp - TR1 is_placeholder metafunction | |
| // | |
| // Copyright (c) 2006 Peter Dimov | |
| // | |
| // 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 | |
| namespace boost | |
| { | |
| template< class T > struct is_placeholder | |
| { | |
| enum _vt { value = 0 }; | |
| }; | |
| } // namespace boost | |
| #endif // #ifndef BOOST_IS_PLACEHOLDER_HPP_INCLUDED |