#ifndef BOOST_BIND_ARG_HPP_INCLUDED #define BOOST_BIND_ARG_HPP_INCLUDED // MS compatible compilers support #pragma once #if defined(_MSC_VER) && (_MSC_VER >= 1020) # pragma once #endif // // bind/arg.hpp // // Copyright (c) 2002 Peter Dimov and Multi Media Ltd. // // 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/bind/bind.html for documentation. // #include <boost/config.hpp> #include <boost/is_placeholder.hpp> namespace boost { template< int I > struct arg { arg() { } template< class T > arg( T const & /* t */ ) { // static assert I == is_placeholder<T>::value typedef char T_must_be_placeholder[ I == is_placeholder<T>::value? 1: -1 ]; } }; template< int I > bool operator==( arg<I> const &, arg<I> const & ) { return true; } #if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION ) template< int I > struct is_placeholder< arg<I> > { enum _vt { value = I }; }; template< int I > struct is_placeholder< arg<I> (*) () > { enum _vt { value = I }; }; #endif } // namespace boost #endif // #ifndef BOOST_BIND_ARG_HPP_INCLUDED