template <class ForwardIterator> ForwardIterator next (ForwardIterator it, typename iterator_traits<ForwardIterator>::difference_type n = 1);
operator+
或 operator-
。否則,函式將重複使用複製的迭代器的遞增或遞減運算子(operator++
或 operator--
),直到前進 n 個元素。
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