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편집 파일: always.hpp

#ifndef BOOST_MPL_ALWAYS_HPP_INCLUDED #define BOOST_MPL_ALWAYS_HPP_INCLUDED // Copyright Aleksey Gurtovoy 2001-2004 // // 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. // $Id$ // $Date$ // $Revision$ #include <boost/mpl/aux_/preprocessor/default_params.hpp> #include <boost/mpl/aux_/na.hpp> #include <boost/mpl/aux_/arity_spec.hpp> namespace boost { namespace mpl { template< typename Value > struct always { template< BOOST_MPL_PP_DEFAULT_PARAMS(BOOST_MPL_LIMIT_METAFUNCTION_ARITY, typename T, na) > struct apply { typedef Value type; }; }; BOOST_MPL_AUX_ARITY_SPEC(0, always) }} #endif // BOOST_MPL_ALWAYS_HPP_INCLUDED