C++ 概念： Iterator
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Iterator概念描述的类型，可用于识别和遍历容器元素.原文：
The
Iterator concept describes types that can be used to identify and traverse the elements of a container.Iterator是使用迭代器类型：InputIterator，OutputIterator，ForwardIterator，BidirectionalIterator和RandomAccessIterator的基本概念。迭代器可以被看作是一个抽象的指针.原文：
Iterator is the base concept used by other iterator types: InputIterator, OutputIterator, ForwardIterator, BidirectionalIterator, and RandomAccessIterator. Iterators can be thought of as an abstraction of pointers.[编辑] 要求
类型
It是一个Iterator，除其他要求外，下列条件必须得到满足i这种类型的对象原文：
For type
It to be an Iterator, in addition to the other requirements, the following conditions have to be satisfied for an object i of such type:| Expression | Return | Precondition |
|---|---|---|
| *i | reference[1] | i is dereferenceable [2]
|
| ++i | It& |
[编辑] 另请参阅
[编辑] 脚注
- ↑ As defined in iterator_traits中
- ↑ It's a valid iterator pointing to an existing element
原文：
