[boost] Re: Boost Iterable Range Library update (v1.5)

From: David Abrahams (dave_at_[hidden])
Date: 2004-11-12 21:02:37

John Torjo <john.lists_at_[hidden]> writes:

>> Like Robert I am uncomfortable with a range concept that has
>> iteration capabilities.  For one thing, standard containers don't
>> satisfy that concept, and it seems to me
>> that a container ought to be a range without
>> any special adaptation.  Furthermore
>
> Well... This was to allow easy manual loops.
>
>> I have doubts about how well this "range/iterator" concept maps onto
>> bidirectional
>> and random access.  That said...
>
> It maps ok with bidirectional/random access. If an iterator has a
> given iterator category, the range will preserve it. I have used it in
> code, and it's quite powerful.

Don't you need a current position, start and an end for bidirectional
iteration?  Forward "ranges" just get a current position and an end.

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com