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- #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
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