1
2#ifndef BOOST_MPL_AUX_HAS_KEY_IMPL_HPP_INCLUDED
3#define BOOST_MPL_AUX_HAS_KEY_IMPL_HPP_INCLUDED
4
5// Copyright Aleksey Gurtovoy 2002-2004
6// Copyright David Abrahams 2003
7//
8// Distributed under the Boost Software License, Version 1.0.
9// (See accompanying file LICENSE_1_0.txt or copy at
10// http://www.boost.org/LICENSE_1_0.txt)
11//
12// See http://www.boost.org/libs/mpl for documentation.
13
14// $Id$
15// $Date$
16// $Revision$
17
18#include <boost/mpl/has_key_fwd.hpp>
19#include <boost/mpl/aux_/traits_lambda_spec.hpp>
20
21namespace boost { namespace mpl {
22
23// no default implementation; the definition is needed to make MSVC happy
24
25template< typename Tag > struct has_key_impl
26{
27 template< typename AssociativeSequence, typename Key > struct apply;
28};
29
30BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,has_key_impl)
31
32}}
33
34#endif // BOOST_MPL_AUX_HAS_KEY_IMPL_HPP_INCLUDED
35