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

Revision 857, 1.3 KB checked in by igarcia, 19 years ago (diff)
Line 
1
2#ifndef BOOST_MPL_AT_HPP_INCLUDED
3#define BOOST_MPL_AT_HPP_INCLUDED
4
5// Copyright Aleksey Gurtovoy 2000-2004
6//
7// Distributed under the Boost Software License, Version 1.0.
8// (See accompanying file LICENSE_1_0.txt or copy at
9// http://www.boost.org/LICENSE_1_0.txt)
10//
11// See http://www.boost.org/libs/mpl for documentation.
12
13// $Source: /cvsroot/boost/boost/boost/mpl/at.hpp,v $
14// $Date: 2004/09/04 01:33:46 $
15// $Revision: 1.7 $
16
17#include <boost/mpl/at_fwd.hpp>
18#include <boost/mpl/aux_/at_impl.hpp>
19#include <boost/mpl/long.hpp>
20#include <boost/mpl/sequence_tag.hpp>
21#include <boost/mpl/aux_/na_spec.hpp>
22#include <boost/mpl/aux_/lambda_support.hpp>
23#include <boost/mpl/aux_/nttp_decl.hpp>
24
25namespace boost { namespace mpl {
26
27template<
28      typename BOOST_MPL_AUX_NA_PARAM(Sequence)
29    , typename BOOST_MPL_AUX_NA_PARAM(N)
30    >
31struct at
32    : at_impl< typename sequence_tag<Sequence>::type >
33        ::template apply< Sequence,N >
34{
35    BOOST_MPL_AUX_LAMBDA_SUPPORT(2,at,(Sequence,N))
36};
37
38template<
39      typename Sequence
40    , BOOST_MPL_AUX_NTTP_DECL(long, N)
41    >
42struct at_c
43    : at_impl< typename sequence_tag<Sequence>::type >
44        ::template apply< Sequence,mpl::long_<N> >
45{
46};
47
48BOOST_MPL_AUX_NA_SPEC(2, at)
49
50}}
51
52#endif // BOOST_MPL_AT_HPP_INCLUDED
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