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boost_mpl/include/boost/mpl/aux_/pred.hpp
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2002-09-15 22:13:24 +00:00

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//-----------------------------------------------------------------------------
// boost mpl/aux/pred.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2001-02
// Aleksey Gurtovoy
//
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appears in all copies and
// that both the copyright notice and this permission notice appear in
// supporting documentation. No representations are made about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
#ifndef BOOST_MPL_AUX_PRED_HPP_INCLUDED
#define BOOST_MPL_AUX_PRED_HPP_INCLUDED
namespace boost {
namespace mpl {
namespace aux {
// wrapper class to help users to deal with "legacy" metafunctions
// (i.e. the ones that do not provide the '::type' interface)
//
// usage example: mpl::pred< boost::is_same<mpl::_1, int> >
template< typename Pred >
struct pred : Pred
{
typedef pred type;
};
} // namespace aux
} // namespace mpl
} // namespace boost
#endif // BOOST_MPL_AUX_PRED_HPP_INCLUDED