Iterator Adaptors

• ConstIterators
• Adaptee: an iterator class
• Adaptor: similar iterator class, without ability to mutate associated container
• Utility: iterators that can be used when container is const
• Reverse Iterators
• Adaptee: an iterator class
• Adaptor: an iterator of the same category
• Utility: normal direction of increment/decrement is reversed - applies generic algorithm in reverse direction
• Insert Iterators
• Adaptee: a container class
• Adaptor: an output iterator
• Utility: replace overwrite with insert in generic algorithms
• Stream Iterators
• Adaptee: an istream/ostream class
• Adaptor: an input/output iterator
• Utility: read/write directly from/to istream/ostream in generic algorithms