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#ifndef BOOST_MPL_MAP_AUX_ERASE_KEY_IMPL_HPP_INCLUDED
#define BOOST_MPL_MAP_AUX_ERASE_KEY_IMPL_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2003-2004
// Copyright David Abrahams 2003-2004
//
// 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)
//
// See http://www.boost.org/libs/mpl for documentation.
// $Source: /cvsroot/boost/boost/boost/mpl/map/aux_/erase_key_impl.hpp,v $
// $Date: 2004/09/05 09:42:58 $
// $Revision: 1.3 $
#include <boost/mpl/erase_key_fwd.hpp>
#include <boost/mpl/map/aux_/has_key_impl.hpp>
#include <boost/mpl/map/aux_/item.hpp>
#include <boost/mpl/map/aux_/tag.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/base.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/type_traits/is_same.hpp>
namespace boost { namespace mpl {
template<>
struct erase_key_impl< aux::map_tag >
{
template<
typename Map
, typename Key
>
struct apply
: eval_if<
has_key_impl<aux::map_tag>::apply<Map,Key>
, eval_if<
is_same< Key,typename Map::key_ >
, base<Map>
, identity< m_mask<Key,Map> >
>
, identity<Map>
>
{
};
};
}}
#endif // BOOST_MPL_MAP_AUX_ERASE_KEY_IMPL_HPP_INCLUDED
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