ceph/src/boost/libs/iterator/example/node_iterator2.cpp

   1 // Copyright David Abrahams 2004. Use, modification and distribution is
   2 // subject to the Boost Software License, Version 1.0. (See accompanying
   3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   4
   5 #include "node_iterator2.hpp"
   6 #include <string>
   7 #include <memory>
   8 #include <iostream>
   9 #include <algorithm>
  10 #include <boost/mem_fn.hpp>
  11 #include <cassert>
  12
  13 int main()
  14 {
  15     std::auto_ptr<node<int> > nodes(new node<int>(42));
  16     nodes->append(new node<std::string>(" is greater than "));
  17     nodes->append(new node<int>(13));
  18
  19     // Check interoperability
  20     assert(node_iterator(nodes.get()) == node_const_iterator(nodes.get()));
  21     assert(node_const_iterator(nodes.get()) == node_iterator(nodes.get()));
  22
  23     assert(node_iterator(nodes.get()) != node_const_iterator());
  24     assert(node_const_iterator(nodes.get()) != node_iterator());
  25
  26     std::copy(
  27         node_iterator(nodes.get()), node_iterator()
  28       , std::ostream_iterator<node_base>(std::cout, " ")
  29     );
  30     std::cout << std::endl;
  31
  32     std::for_each(
  33         node_iterator(nodes.get()), node_iterator()
  34       , boost::mem_fn(&node_base::double_me)
  35     );
  36
  37     std::copy(
  38         node_const_iterator(nodes.get()), node_const_iterator()
  39       , std::ostream_iterator<node_base>(std::cout, "/")
  40     );
  41     std::cout << std::endl;
  42     return 0;
  43 }