Don't print trailing delimiter stream_iterator C++

What is the most elegant way, in your opinion, to print to std::cout using std::ostream_iterator in C++11 and avoid printing a trailing delimeter?

The object I'm printing has bidirectional iterators, but not random access iterators.

std::list<double> x{1,2,3,4,5,6};
std::copy(x.begin(), std::prev(x.end()),
                std::ostream_iterator<int>(std::cout, ",") );
if ( x.size() != 0 )
  std::cout << *(--x.end()) << std::endl;