ceph/src/boost/libs/mpl/example/tuple_from_list.cpp

   1
   2 // Copyright Aleksey Gurtovoy 2002-2004
   3 //
   4 // Distributed under the Boost Software License, Version 1.0.
   5 // (See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt)
   7 //
   8 // See http://www.boost.org/libs/mpl for documentation.
   9
  10 // $Id$
  11 // $Date$
  12 // $Revision$
  13
  14 #include <boost/mpl/reverse_fold.hpp>
  15 #include <boost/mpl/list.hpp>
  16 #include <boost/tuple/tuple.hpp>
  17
  18 #include <iostream>
  19
  20 using namespace boost::mpl;
  21
  22 template< typename Types > struct tuple_gen
  23     : reverse_fold<
  24           Types
  25         , boost::tuples::null_type
  26         , boost::tuples::cons<_2,_1>
  27         >
  28 {
  29 };
  30
  31 int main()
  32 {
  33     tuple_gen< list<int,char const*,bool> >::type t;
  34
  35     boost::get<0>(t) = -1;
  36     boost::get<1>(t) = "text";
  37     boost::get<2>(t) = false;
  38
  39     std::cout
  40         << boost::get<0>(t) << '\n'
  41         << boost::get<1>(t) << '\n'
  42         << boost::get<2>(t) << '\n'
  43         ;
  44
  45     return 0;
  46 }