| #ifndef ITERATORS_H |
| #define ITERATORS_H |
| |
| #include <iterator> |
| |
| template <class It> |
| class output_iterator |
| { |
| It it_; |
| |
| template <class U> friend class output_iterator; |
| public: |
| typedef std::output_iterator_tag iterator_category; |
| typedef typename std::iterator_traits<It>::value_type value_type; |
| typedef typename std::iterator_traits<It>::difference_type difference_type; |
| typedef It pointer; |
| typedef typename std::iterator_traits<It>::reference reference; |
| |
| It base() const {return it_;} |
| |
| output_iterator() : it_() {} |
| explicit output_iterator(It it) : it_(it) {} |
| template <class U> |
| output_iterator(const output_iterator<U>& u) :it_(u.it_) {} |
| |
| reference operator*() const {return *it_;} |
| |
| output_iterator& operator++() {++it_; return *this;} |
| output_iterator operator++(int) |
| {output_iterator tmp(*this); ++(*this); return tmp;} |
| }; |
| |
| #endif // ITERATORS_H |