2 #ifndef BOOST_MPL_IDENTITY_HPP_INCLUDED
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3 #define BOOST_MPL_IDENTITY_HPP_INCLUDED
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5 // Copyright Aleksey Gurtovoy 2000-2004
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7 // Distributed under the Boost Software License, Version 1.0.
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8 // (See accompanying file LICENSE_1_0.txt or copy at
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9 // http://www.boost.org/LICENSE_1_0.txt)
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11 // See http://www.boost.org/libs/mpl for documentation.
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13 // $Id: identity.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
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14 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
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15 // $Revision: 49267 $
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17 #include <boost/mpl/aux_/na_spec.hpp>
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18 #include <boost/mpl/aux_/lambda_support.hpp>
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20 namespace boost { namespace mpl {
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23 typename BOOST_MPL_AUX_NA_PARAM(T)
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28 BOOST_MPL_AUX_LAMBDA_SUPPORT(1, identity, (T))
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32 typename BOOST_MPL_AUX_NA_PARAM(T)
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34 struct make_identity
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36 typedef identity<T> type;
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37 BOOST_MPL_AUX_LAMBDA_SUPPORT(1, make_identity, (T))
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40 BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, identity)
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41 BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, make_identity)
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45 #endif // BOOST_MPL_IDENTITY_HPP_INCLUDED
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