libstdc++: Iterator Tags

libstdc++

Iterator Tags
Iterators
Collaboration diagram for Iterator Tags:

## Classes
struct | std::bidirectional_iterator_tag
struct | std::contiguous_iterator_tag
struct | std::forward_iterator_tag
struct | std::input_iterator_tag
struct | std::output_iterator_tag
struct | std::random_access_iterator_tag

## Detailed Description

These are empty types, used to distinguish different iterators. The distinction is not made by what they contain, but simply by what they are. Different underlying algorithms can then be used based on the different operations supported by different iterator types.