《STL Tutorial Reference》 Chapt 7 Iterators

Chapt 7 Iterators

7.1 头文件

每个容器都定义它们自己的iterator类型，因此通常你不需要特殊的头文件来使用iterator。但是有几种特殊的iterator，例如reverse iteratos，它们被定义在<iteraor>头文件中。同样，你也不需要自己包含此头文件，它们已经被容器包含以定义它们自己的特定iterator

7.2 Iterator Categories

Iterator Category	Ability	Provider
Input iterator	Read, forward	istream
Output iterator	Write, forward	ostream, inserter
Forward iterator	Read/write, forward
Bidirectional iterator	Read/write, forward/backward	list, set/multiset,map/multimap
Rabdin access iterator	Read/write, random access	vector, deque,string,array

7.2.1 Input iterators

支持的操作：

操作	Input iterator	Output iterator	Forward Iterator	Bidirectional iterator	Random access iterator
*iter	√		√	√	√
iter->member	√		√	√	√
*iter = value		√	√	√	√
iter1 = iter2			√	√	√
++iter	√	√	√	√	√
iter++	√	√	√	√	√
--iter				√	√
iter--				√	√
iter1==iter2	√		√	√	√
iter1!=iter2	√		√	√	√
iter					√
iter += n					√
iter -= n					√
iter + n					√
n + iter					√
iter - n					√
iter1 - iter2					√
iter1 < iter2					√
iter1 > iter2					√
iter1 <= iter2					√
iter1 >= iter2					√
TYPE(iter)	√	√	√	√	√