45 class const_iterator {
47   const_iterator() {}  in const_iterator()  function
48   const_iterator(const Iterator &iter) : iter(iter) {}  in const_iterator()  function
49   const_iterator(const const_iterator<Iterator> &citer) : iter(citer.iter) {}  in const_iterator()  function
58   const_iterator &operator++() { return ++iter; }
59   const_iterator &operator--() { return --iter; }
60   const_iterator operator++(int) { return iter--; }
61   const_iterator operator--(int) { return iter--; }
66   bool operator!=(const const_iterator<Iterator> &it) const {
79   typedef const_iterator<Iterator> const_iterator;  typedef
84   const_iterator begin() const { return _begin; }  in begin()
85   const_iterator end() const { return _end; }  in end()
87   const_iterator cbegin() const { return _begin; }  in cbegin()
88   const_iterator cend() const { return _end; }  in cend()
123   typedef const_iterator<reverse_iterator> const_reverse_iterator;
161   typedef const T *const_iterator;  typedef
166   const_iterator begin() const { return &v[0]; }  in begin()
167   const_iterator end() const { return &v[n - 1]; }  in end()
169   const_iterator cbegin() const { return &v[0]; }  in cbegin()
170   const_iterator cend() const { return &v[n - 1]; }  in cend()
218   const_iterator<iterator<pair<key, value>>> find(const key &) const {}  in find()