mpl/aux_/has_key_impl.hpp

0001
0002 #ifndef BOOST_MPL_AUX_HAS_KEY_IMPL_HPP_INCLUDED
0003 #define BOOST_MPL_AUX_HAS_KEY_IMPL_HPP_INCLUDED
0004
0005 // Copyright Aleksey Gurtovoy 2002-2004
0006 // Copyright David Abrahams 2003
0007 //
0008 // Distributed under the Boost Software License, Version 1.0.
0009 // (See accompanying file LICENSE_1_0.txt or copy at
0010 // http://www.boost.org/LICENSE_1_0.txt)
0011 //
0012 // See http://www.boost.org/libs/mpl for documentation.
0013
0014 // $Id$
0015 // $Date$
0016 // $Revision$
0017
0018 #include <boost/mpl/has_key_fwd.hpp>
0019 #include <boost/mpl/aux_/traits_lambda_spec.hpp>
0020
0021 namespace boost { namespace mpl {
0022
0023 // no default implementation; the definition is needed to make MSVC happy
0024
0025 template< typename Tag > struct has_key_impl
0026 {
0027     template< typename AssociativeSequence, typename Key > struct apply;
0028 };
0029
0030 BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,has_key_impl)
0031
0032 }}
0033
0034 #endif // BOOST_MPL_AUX_HAS_KEY_IMPL_HPP_INCLUDED