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Subject: Re: [boost] [iterator] counting_iterator and reverse iterator problem (was: [graph][iterators] csr graph and reverse iterator problem)
From: Gordon Woodhull (gordon_at_[hidden])
Date: 2011-09-10 17:45:22

On Sep 9, 2011, at 5:02 AM, Takatoshi Kondo <kondo_at_[hidden]> wrote:

>> One further note -- there is nothing in the BGL requirements that states
>> that vertex_iterators need to be bidirectional

Out of curiosity, is it ever not the case for any of BGL's graph classes? Or is the requirement loose for the sake of external graph libs?

(thinking an slist of vertices must be rare)

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