318     std::vector<T> m_storage;  variable
330     explicit Sequence(size_t size) : m_storage(size) {}  in Sequence()
337         m_storage.reserve(size);  in Sequence()
340             m_storage.push_back(T(f(k)));  in Sequence()
342     Sequence(const std::initializer_list<T>& data) : m_storage(data) {}  in Sequence()
347         return m_storage.begin();  in begin()
352         return m_storage.end();  in end()
357         return m_storage.begin();  in begin()
362         return m_storage.end();  in end()
367         return m_storage.cbegin();  in cbegin()
372         return m_storage.cend();  in cend()
377         return forward_iterator(m_storage.begin());  in fbegin()
382         return forward_iterator(m_storage.end());  in fend()
387         return const_forward_iterator(m_storage.cbegin());  in cfbegin()
392         return const_forward_iterator(m_storage.cend());  in cfend()
397         return const_forward_iterator(m_storage.cbegin());  in fbegin()
402         return const_forward_iterator(m_storage.cend());  in fend()
408         return const_bidirectional_iterator(m_storage.cbegin());  in cbibegin()
413         return const_bidirectional_iterator(m_storage.cend());  in cbiend()
419         return bidirectional_iterator(m_storage.begin());  in bibegin()
424         return bidirectional_iterator(m_storage.end());  in biend()
430         return m_storage.size();  in size()
435         return m_storage.data();  in data()
437     typename std::vector<T>::reference operator[](size_t j) { return m_storage[j]; }
438     const T& operator[](size_t j) const { return m_storage[j]; }
444         for (size_t i = 0; i < m_storage.size(); i++)  in fill()
445             m_storage[i] = value;  in fill()
455         fill_data(m_storage.begin(), m_storage.end(), f);  in fill()