Header <boost/itl/iterator.hpp>

namespace boost {
  namespace itl {
    template<class ContainerT > class add_iterator;
    template<class ContainerT > class insert_iterator;
    template<class ContainerT , typename IteratorT > 
      add_iterator< ContainerT > adder(ContainerT &, IteratorT);
    template<class ContainerT , typename IteratorT > 
      insert_iterator< ContainerT > inserter(ContainerT &, IteratorT);
  }
}