#ifndef BOOST_MPL_IDENTITY_HPP_INCLUDED #define BOOST_MPL_IDENTITY_HPP_INCLUDED // Copyright Aleksey Gurtovoy 2000-2004 // // 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: identity.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ // $Revision: 49267 $ #include <boost/mpl/aux_/na_spec.hpp> #include <boost/mpl/aux_/lambda_support.hpp> namespace boost { namespace mpl { template< typename BOOST_MPL_AUX_NA_PARAM(T) > struct identity { typedef T type; BOOST_MPL_AUX_LAMBDA_SUPPORT(1, identity, (T)) }; template< typename BOOST_MPL_AUX_NA_PARAM(T) > struct make_identity { typedef identity<T> type; BOOST_MPL_AUX_LAMBDA_SUPPORT(1, make_identity, (T)) }; BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, identity) BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, make_identity) }} #endif // BOOST_MPL_IDENTITY_HPP_INCLUDED