Hi Thomas,
some time ago I was in the very same situation that I needed an iterator of tuples - or a tuple of iterators, which virtually is the same IMO.
My solution then was to extend tuple functionality, i.e. to add everything that a good iterator requires, such as dereference, operator++() etc., to a tuple type (not boost:tuple, but a 'tupple' type of my own. Hm.)
About three months ago, I released that stuff to Boost Sandbox, where it sits (in directory 'tupple') rather unnoticed (lack of marketing, I guess),
Thanks for your kind words. I'll play with the sanbox stuff. Is the main purpose there to incorporate better iterator categories? Anyway, I won't take
any further action until all that has settled down.
so if you play with the sandbox stuff, you might as well check it out.
(Hint: open boost/tupple/detail/container_tupple_part_spec.hpp and search for 'iterator_tuple'. Don't blame me for indentation, this is generated code.).
I don't really know which approach - "iterator of tuples" vs. "tuple of iterators" - is better, but comparing the two approaches might yield some insight.
I'd be really interested in an exchange of ideas,
- Roland
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