41 lines
1.0 KiB
C++
41 lines
1.0 KiB
C++
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#ifndef BOOST_MPL_SET_AUX_AT_IMPL_HPP_INCLUDED
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#define BOOST_MPL_SET_AUX_AT_IMPL_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2003-2004
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/mpl for documentation.
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// $Id: at_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
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// $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
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// $Revision: 49267 $
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#include <boost/mpl/at_fwd.hpp>
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#include <boost/mpl/set/aux_/has_key_impl.hpp>
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#include <boost/mpl/set/aux_/tag.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/mpl/void.hpp>
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namespace boost { namespace mpl {
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template<>
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struct at_impl< aux::set_tag >
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{
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template< typename Set, typename T > struct apply
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{
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typedef typename if_<
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has_key_impl<aux::set_tag>::apply<Set,T>
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, T
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, void_
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>::type type;
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};
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};
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}}
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#endif // BOOST_MPL_SET_AUX_AT_IMPL_HPP_INCLUDED
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