一对开始和结束迭代器 - 它有一个名字吗？

Question

在C++中,是否有struct(或类)定义了一对迭代器 - 一个是开头,一个是结束迭代器？代表这种情况的最佳做法是什么？std::pair？我知道我可以轻松地自己构建,但我想遵循惯例.

我搜索以下内容:

template<class It>
struct XXX {
private:
   It b;
   It e;
public:
   It begin () const { return b; }
   It end () const { return e; }
   // ...
};

Answer 1

如果它是一对两个任意迭代器,那就是 - 一对迭代器.

如果它碰巧是一对迭代器,某些假设成立,例如"它们指向同一个容器",我称之为"Range",因为它是标准模板库文档中的所谓:

在SGI介绍标准模板库写入Find takes three arguments: two iterators that define a range, and a value to search for in that range. It examines each iterator in the range [first, last), proceeding from the beginning to the end, and stops either when it finds an iterator that points to value or when it reaches the end of the range..
cplusplus.com写道(是的,我知道该网站的可信度相当差,但无论如何):A range is any sequence of objects that can be accessed through iterators or pointers, such as an array or an instance of some of the STL containers.
C++标准的工作草案在24.2.1第7段中写道:A range is a pair of iterators that designate the beginning and end of the computation. A range [i,i) is an empty range; in general, a range [i,j) refers to the elements in the data structure starting with the element pointed to by i and up to but not including the element pointed to by j

Answer 2