36   struct Iterator {  struct
37     const Reporter *owner;
38     int pos;
40     Iterator(const Reporter *owner, int pos) : owner(owner), pos(pos) {}  in Iterator()  argument
42     Iterator(const Iterator &that) : owner(that.owner), pos(that.pos) {  in Iterator()  function
46     Iterator(Iterator &&that) : owner(that.owner), pos(that.pos) {  in Iterator()  function
50     ~Iterator() { owner->print("iterator dtor"); }  in ~Iterator()
52     const Iterator &operator=(const Iterator &that) {  in operator =()
59     const Iterator &operator=(Iterator &&that) {  in operator =()
66     bool operator==(const Iterator &that) const {  in operator ==()
71     Iterator &operator++() {  in operator ++()
77     Iterator operator++(int) {  in operator ++()
84     int operator*() const {  in operator *()
90     size_t operator-(const Iterator &that) const {  in operator -()
96     Iterator operator+(int steps) const {  in operator +()
101     void print(const char *msg) const { owner->print(msg); }  in print()