boost/fusion/algorithm/transformation/filter.hpp

/*=============================================================================
    Copyright (c) 2001-2011 Joel de Guzman
    Copyright (c) 2005-2006 Dan Marsden
    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)
==============================================================================*/
#if !defined(FUSION_FILTER_02122005_1839)
#define FUSION_FILTER_02122005_1839
#include <boost/fusion/support/config.hpp>
#include <boost/fusion/view/filter_view/filter_view.hpp>
#include <boost/type_traits/is_same.hpp>
namespace boost { namespace fusion
{
    namespace result_of
    {
        template <typename Sequence, typename T>
        struct filter
        {
            typedef filter_view<Sequence, is_same<mpl::_, T> > type;
        };
    }
    template <typename T, typename Sequence>
    BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
    inline typename result_of::filter<Sequence const, T>::type
    filter(Sequence const& seq)
    {
        return filter_view<const Sequence, is_same<mpl::_, T> >(seq);
    }
}}
#endif