// In header: <boost/test/data/monomorphic/zip.hpp>
template<typename DataSet1, typename DataSet2> 
class zip {
public:
  // types
  typedef iterator::iterator_sample sample;
  // member classes/structs/unions
  struct iterator {
    // types
    typedef decltype(sample_merge(*std::declval< dataset1_iter >(),*std::declval< dataset2_iter >())) iterator_sample;
    // construct/copy/destruct
    explicit iterator(dataset1_iter, dataset2_iter);
    // public member functions
    auto operator*() const;
    void operator++();
  };
  enum @10 { arity = = dataset1_decay::arity + dataset2_decay::arity };
  // construct/copy/destruct
  zip(DataSet1 &&, DataSet2 &&, data::size_t);
  zip(zip &&);
  // public member functions
  data::size_t size() const;
  iterator begin() const;
};