boost_tuple/mpl/clear.hpp

0001 /*=============================================================================
0002     Copyright (c) 2012 Kohei Takahashi
0003
0004     Distributed under the Boost Software License, Version 1.0. (See accompanying
0005     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0006 ==============================================================================*/
0007 #if !defined(BOOST_FUSION_CLEAR_10172012_0100)
0008 #define BOOST_FUSION_CLEAR_10172012_0100
0009
0010 #include <boost/mpl/identity.hpp>
0011 #include <boost/fusion/adapted/boost_tuple/tag_of.hpp>
0012
0013 namespace boost { namespace fusion { namespace detail {
0014
0015   template <typename Tag>
0016   struct clear;
0017
0018   template <>
0019   struct clear<boost_tuple_tag> : mpl::identity<boost::tuple<> > {};
0020
0021 }}}
0022
0023 #endif