ceph/src/boost/libs/circular_buffer/example/circular_buffer_iter_example.cpp

   1 // Copyright 2003-2008 Jan Gaspar.
   2 // Copyright 2013 Paul A. Bristow.   Added some Quickbook snippet markers.
   3
   4 // Distributed under the Boost Software License, Version 1.0.
   5 // (See the accompanying file LICENSE_1_0.txt
   6 // or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
   7
   8 #undef BOOST_CB_ENABLE_DEBUG
   9
  10 //[circular_buffer_iter_example_1
  11 /*`
  12 */
  13
  14 #define BOOST_CB_ENABLE_DEBUG 0 // The Debug Support has to be disabled, otherwise the code produces a runtime error.
  15
  16 #include <boost/circular_buffer.hpp>
  17 #include <boost/assert.hpp>
  18 #include <assert.h>
  19
  20 int main(int /*argc*/, char* /*argv*/[])
  21 {
  22
  23   boost::circular_buffer<int> cb(3);
  24
  25   cb.push_back(1);
  26   cb.push_back(2);
  27   cb.push_back(3);
  28
  29   boost::circular_buffer<int>::iterator it = cb.begin();
  30
  31   assert(*it == 1);
  32
  33   cb.push_back(4);
  34
  35   assert(*it == 4); // The iterator still points to the initialized memory.
  36
  37   return 0;
  38 }
  39
  40 //] [/circular_buffer_iter_example_1]