How to implement an STL-style iterator and avoid common pitfalls?

Question

I made a collection for which I want to provide an STL-style, random-access iterator. I was searching around for an example implementation of an iterator but I didn\'t find

Answer 1

Thomas Becker wrote a useful article on the subject here.

There was also this (perhaps simpler) approach that appeared previously on SO: How to correctly implement custom iterators and const_iterators?