text: # /* **************************************************************************
  #  *                                                                          *
  #  *     (C) Copyright Paul Mensonides 2002.
  #  *     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 for most recent version. */
  #
  # ifndef BOOST_PREPROCESSOR_FACILITIES_APPLY_HPP
  # define BOOST_PREPROCESSOR_FACILITIES_APPLY_HPP
  #
  # include "../config/config.hpp"
  # include "../control/expr_iif.hpp"
  # include "../detail/is_unary.hpp"
  # include "../tuple/rem.hpp"
  #
  # /* BOOST_PP_APPLY */
  #
  # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  #    define BOOST_PP_APPLY(x) BOOST_PP_APPLY_I(x)
  #    define BOOST_PP_APPLY_I(x) BOOST_PP_EXPR_IIF(BOOST_PP_IS_UNARY(x), BOOST_PP_TUPLE_REM_1 x)
  # elif BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_BCC()
  #    define BOOST_PP_APPLY(x) BOOST_PP_APPLY_I(x)
  #    define BOOST_PP_APPLY_I(x) BOOST_PP_APPLY_ ## x
  #    define BOOST_PP_APPLY_(x) x
  #    define BOOST_PP_APPLY_BOOST_PP_NIL
  # else
  #    define BOOST_PP_APPLY(x) BOOST_PP_EXPR_IIF(BOOST_PP_IS_UNARY(x), BOOST_PP_TUPLE_REM_1 x)
  # endif
  #
  # endif
  