WSJT-X/boost/libs/circular_buffer/example/circular_buffer_iter_example.cpp

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C++

// Copyright 2003-2008 Jan Gaspar.
// Copyright 2013 Paul A. Bristow. Added some Quickbook snippet markers.
// Distributed under the Boost Software License, Version 1.0.
// (See the accompanying file LICENSE_1_0.txt
// or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
#undef BOOST_CB_ENABLE_DEBUG
//[circular_buffer_iter_example_1
/*`
*/
#define BOOST_CB_ENABLE_DEBUG 0 // The Debug Support has to be disabled, otherwise the code produces a runtime error.
#include <boost/circular_buffer.hpp>
#include <boost/assert.hpp>
#include <assert.h>
int main(int /*argc*/, char* /*argv*/[])
{
boost::circular_buffer<int> cb(3);
cb.push_back(1);
cb.push_back(2);
cb.push_back(3);
boost::circular_buffer<int>::iterator it = cb.begin();
assert(*it == 1);
cb.push_back(4);
assert(*it == 4); // The iterator still points to the initialized memory.
return 0;
}
//] [/circular_buffer_iter_example_1]