1 /*=============================================================================
2 Copyright (c) 2001-2011 Joel de Guzman
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 ==============================================================================*/
7 #if !defined(FUSION_UNKNOWN_KEY_09242005_1219)
8 #define FUSION_UNKNOWN_KEY_09242005_1219
10 namespace boost { namespace fusion { namespace detail
13 struct unknown_key {};