williamr@2: 
williamr@2: #ifndef BOOST_MPL_HAS_KEY_HPP_INCLUDED
williamr@2: #define BOOST_MPL_HAS_KEY_HPP_INCLUDED
williamr@2: 
williamr@2: // Copyright Aleksey Gurtovoy 2003-2004
williamr@2: // Copyright David Abrahams 2003-2004
williamr@2: //
williamr@2: // Distributed under the Boost Software License, Version 1.0. 
williamr@2: // (See accompanying file LICENSE_1_0.txt or copy at 
williamr@2: // http://www.boost.org/LICENSE_1_0.txt)
williamr@2: //
williamr@2: // See http://www.boost.org/libs/mpl for documentation.
williamr@2: 
williamr@2: // $Source: /cvsroot/boost/boost/boost/mpl/has_key.hpp,v $
williamr@2: // $Date: 2004/09/02 15:40:41 $
williamr@2: // $Revision: 1.3 $
williamr@2: 
williamr@2: #include <boost/mpl/has_key_fwd.hpp>
williamr@2: #include <boost/mpl/sequence_tag.hpp>
williamr@2: #include <boost/mpl/aux_/has_key_impl.hpp>
williamr@2: #include <boost/mpl/aux_/na_spec.hpp>
williamr@2: #include <boost/mpl/aux_/lambda_support.hpp>
williamr@2: 
williamr@2: namespace boost { namespace mpl {
williamr@2: 
williamr@2: template<
williamr@2:       typename BOOST_MPL_AUX_NA_PARAM(AssociativeSequence)
williamr@2:     , typename BOOST_MPL_AUX_NA_PARAM(Key)
williamr@2:     >
williamr@2: struct has_key
williamr@2:     : has_key_impl< typename sequence_tag<AssociativeSequence>::type >
williamr@2:         ::template apply<AssociativeSequence,Key>
williamr@2: {
williamr@2:     BOOST_MPL_AUX_LAMBDA_SUPPORT(2,has_key,(AssociativeSequence,Key))
williamr@2: };
williamr@2: 
williamr@2: BOOST_MPL_AUX_NA_SPEC(2, has_key)
williamr@2: 
williamr@2: }}
williamr@2: 
williamr@2: #endif // BOOST_MPL_HAS_KEY_HPP_INCLUDED