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

Revision 857, 952 bytes checked in by igarcia, 19 years ago (diff)
RevLine 
[857]1
2#ifndef BOOST_MPL_ALWAYS_HPP_INCLUDED
3#define BOOST_MPL_ALWAYS_HPP_INCLUDED
4
5// Copyright Aleksey Gurtovoy 2001-2004
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/always.hpp,v $
14// $Date: 2004/09/02 15:40:41 $
15// $Revision: 1.5 $
16
17#include <boost/mpl/aux_/preprocessor/def_params_tail.hpp>
18#include <boost/mpl/aux_/na.hpp>
19#include <boost/mpl/aux_/arity_spec.hpp>
20
21namespace boost { namespace mpl {
22
23template< typename Value > struct always
24{
25    template<
26          typename T
27        BOOST_MPL_PP_NESTED_DEF_PARAMS_TAIL(1, typename T, na)
28        >
29    struct apply
30    {
31        typedef Value type;
32    };
33};
34
35BOOST_MPL_AUX_ARITY_SPEC(1, always)
36
37}}
38
39#endif // BOOST_MPL_ALWAYS_HPP_INCLUDED
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