1 #ifndef BOOST_IS_PLACEHOLDER_HPP_INCLUDED
2 #define BOOST_IS_PLACEHOLDER_HPP_INCLUDED
4 // MS compatible compilers support #pragma once
6 #if defined( _MSC_VER ) && ( _MSC_VER >= 1020 )
11 // is_placeholder.hpp - TR1 is_placeholder metafunction
13 // Copyright (c) 2006 Peter Dimov
15 // Distributed under the Boost Software License, Version 1.0.
17 // See accompanying file LICENSE_1_0.txt or copy at
18 // http://www.boost.org/LICENSE_1_0.txt
24 template< class T > struct is_placeholder
26 enum _vt { value = 0 };
31 #endif // #ifndef BOOST_IS_PLACEHOLDER_HPP_INCLUDED