source: NonGTP/Boost/boost/mpl/has_key.hpp @ 857

Revision 857, 1.2 KB checked in by igarcia, 19 years ago (diff)
Line 
1
2#ifndef BOOST_MPL_HAS_KEY_HPP_INCLUDED
3#define BOOST_MPL_HAS_KEY_HPP_INCLUDED
4
5// Copyright Aleksey Gurtovoy 2003-2004
6// Copyright David Abrahams 2003-2004
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// $Source: /cvsroot/boost/boost/boost/mpl/has_key.hpp,v $
15// $Date: 2004/09/02 15:40:41 $
16// $Revision: 1.3 $
17
18#include <boost/mpl/has_key_fwd.hpp>
19#include <boost/mpl/sequence_tag.hpp>
20#include <boost/mpl/aux_/has_key_impl.hpp>
21#include <boost/mpl/aux_/na_spec.hpp>
22#include <boost/mpl/aux_/lambda_support.hpp>
23
24namespace boost { namespace mpl {
25
26template<
27      typename BOOST_MPL_AUX_NA_PARAM(AssociativeSequence)
28    , typename BOOST_MPL_AUX_NA_PARAM(Key)
29    >
30struct has_key
31    : has_key_impl< typename sequence_tag<AssociativeSequence>::type >
32        ::template apply<AssociativeSequence,Key>
33{
34    BOOST_MPL_AUX_LAMBDA_SUPPORT(2,has_key,(AssociativeSequence,Key))
35};
36
37BOOST_MPL_AUX_NA_SPEC(2, has_key)
38
39}}
40
41#endif // BOOST_MPL_HAS_KEY_HPP_INCLUDED
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