AdvanceTagDispatch.cpp

template<typename Iterator, typename Distance>
void advance(Iterator& it, Distance n, std::bidirectional_iterator_tag)
{
   // Bidirectional implementation
}

template<typename Iterator, typename Distance>
void advance(Iterator& it, Distance n, std::random_access_iterator_tag)
{
   // Random access implementation
}

template<typename Iterator, typename Distance>
void advance(Iterator& it, Distance n)
{
   return advance(it, n, typename Iterator::iterator_category{});
}