imgtools/imglib/boostlibrary/boost/mpl/identity.hpp
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Thu, 10 Dec 2009 15:35:48 +0000
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#ifndef BOOST_MPL_IDENTITY_HPP_INCLUDED
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#define BOOST_MPL_IDENTITY_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2000-2004
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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: identity.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
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// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
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// $Revision: 49267 $
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#include <boost/mpl/aux_/na_spec.hpp>
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#include <boost/mpl/aux_/lambda_support.hpp>
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namespace boost { namespace mpl {
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template<
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      typename BOOST_MPL_AUX_NA_PARAM(T)
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    >
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struct identity
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{
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    typedef T type;
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    BOOST_MPL_AUX_LAMBDA_SUPPORT(1, identity, (T))
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};
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template<
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      typename BOOST_MPL_AUX_NA_PARAM(T)
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    >
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struct make_identity
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{
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    typedef identity<T> type;
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    BOOST_MPL_AUX_LAMBDA_SUPPORT(1, make_identity, (T))
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};
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BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, identity)
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BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, make_identity)
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}}
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#endif // BOOST_MPL_IDENTITY_HPP_INCLUDED