1 /*=============================================================================
2     Copyright (c) 2012 Kohei Takahashi
3 
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(BOOST_FUSION_CLEAR_10172012_0100)
8 #define BOOST_FUSION_CLEAR_10172012_0100
9 
10 #include <boost/mpl/identity.hpp>
11 #include <boost/fusion/adapted/boost_tuple/tag_of.hpp>
12 
13 namespace boost { namespace fusion { namespace detail {
14 
15   template <typename Tag>
16   struct clear;
17 
18   template <>
19   struct clear<boost_tuple_tag> : mpl::identity<boost::tuple<> > {};
20 
21 }}}
22 
23 #endif
24