boost/preprocessor/facilities/identity.hpp
# /* Copyright (C) 2001 # * Housemarque Oy # * http://www.housemarque.com # * # * 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) # */ # # /* Revised by Paul Mensonides (2002) */ # /* Revised by Edward Diener (2015) */ # # /* See http://www.boost.org for most recent version. */ # # ifndef BOOST_PREPROCESSOR_FACILITIES_IDENTITY_HPP # define BOOST_PREPROCESSOR_FACILITIES_IDENTITY_HPP # # include <boost/preprocessor/facilities/empty.hpp> # include <boost/preprocessor/tuple/eat.hpp> # # /* BOOST_PP_IDENTITY */ # # define BOOST_PP_IDENTITY(item) item BOOST_PP_EMPTY # # define BOOST_PP_IDENTITY_N(item,n) item BOOST_PP_TUPLE_EAT_N(n) # # endif