What the Portland Pattern Repository has to offer here: http://c2.com/cgi-bin/wiki?IteratorPattern http://c2.com/cgi-bin/wiki?IteratorPattern would probably suf

What the Portland Pattern Repository has to offer here: http://c2.com/cgi-bin/wiki?IteratorPattern http://c2.com/cgi-bin/wiki?IteratorPattern would probably suffice for all but beginning programmers. Much of the additional verbiage comes from their attempt to explain the relationships between the patterns they've identified (e.g. Iterator vs Visitor). Perhaps the book would probably be better if it did less of that, but I think that's more a matter of taste.