ceph/src/boost/libs/type_traits/test/mpl_interop_test3.cpp

   1
   2 //  (C) Copyright John Maddock 2000.
   3 //  Use, modification and distribution are subject to the
   4 //  Boost Software License, Version 1.0. (See accompanying file
   5 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #include <boost/type_traits/is_void.hpp>
   8 #include <boost/type_traits/add_const.hpp>
   9 #include <boost/mpl/list.hpp>
  10 #include <boost/mpl/front.hpp>
  11 #include <boost/mpl/remove_if.hpp>
  12 #include <boost/mpl/transform.hpp>
  13 #include <boost/static_assert.hpp>
  14
  15 template <class List>
  16 struct lambda_test
  17 {
  18    typedef typename boost::mpl::remove_if<List, boost::is_void<boost::mpl::_> >::type reduced_list;
  19    typedef typename boost::mpl::transform<reduced_list, boost::add_const<boost::mpl::_> >::type const_list;
  20    typedef typename boost::mpl::front<const_list>::type type;
  21 };
  22
  23
  24 int main()
  25 {
  26    typedef boost::mpl::list<const void, int, float, void, double> list_type;
  27
  28    lambda_test<list_type>::type i = 0;
  29    return i;
  30 }