Forward iterators can be used anywhere an input or output iterator is required.
无论是需要输入迭代器还是输出迭代器，均可以使用向前迭代器。
You can easily modify the Rope iterator to accommodate skipping forward by more than one character at a time.
很容易就能将Rope迭代器改成一次向前移动不止一个字符。
Subsequent invocations move the iterator backward or forward by the required distance.
后续的调用会将迭代器前后移动指定的距离。
There are five iterator categories: input, output, forward, bidirectional, and random access.
标准库定义了五种迭代器类别：输入、输出、前向、双向和随机访问迭代器。
Defines an iterator that can access elements in a container in the forward direction by using the increment operator and in the backward direction by using the decrement operator.
定义一个迭代器，该迭代器可以向前(通过使用递增运算符)或向后(通过使用递减运算符)访问容器中的元素。
Interface for an iterator that can access elements in a container only in the forward direction by using the increment operator.
迭代器的接口，只能通过使用递增运算符向前访问容器中的元素。
Interface for an iterator that can access elements in a container in the forward direction by using the increment operator and in the backward direction by using the decrement operator.
迭代器的接口，该迭代器可以向前(通过使用递增运算符)或向后(通过使用递减运算符)访问容器中的元素。
Interface for an iterator that can access elements in a container in the forward direction by using the increment operator and in the backward direction by using the decrement operator.
迭代器的接口，该迭代器可以向前(通过使用递增运算符)或向后(通过使用递减运算符)访问容器中的元素。
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