The BOOST_PP_NIL identifier is reserved by the library to indicate a non-macro.

Usage

BOOST_PP_NIL

Remarks

This identifier is not defined.  Its purpose is to not be a macro.  It is also used to terminate a list.

Sample Code

#include <boost/preprocessor/list/adt.hpp>

#define LIST (x, (y, (z, BOOST_PP_NIL)))

BOOST_PP_LIST_FIRST(x) // expands to x
BOOST_PP_LIST_REST(x) // expands to (y, (z, BOOST_PP_NIL))
© Copyright Housemarque Oy 2002
© Copyright Paul Mensonides 2002

Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at www.boost.org/LICENSE_1_0.txt)