Re: [boost] [iterator] Orbiting iterators

Subject: Re: [boost] [iterator] Orbiting iterators
From: Steve M. Robbins (steve_at_[hidden])
Date: 2016-11-20 11:01:49

On Sunday, November 20, 2016 8:25:20 PM CST Jeremy Murphy wrote:
> Hi,
> 
> just wondering what the mood in Boost.Iterator is for new features? At work
> we recently found use for an orbiting iterator, specifically a circular
> one, which effectively wraps at the start/end of a bounded range. (The
> domain is digital signal processing.)

That sounds like what CGAL calls a Circulator; c.f. http://doc.cgal.org/
latest/Circulator/classCirculator.html 

> Implementation details aside, does this feature sound desirable to the
> library?

I've found these handy when iterating through graph edges incident on a 
vertex, when you need to start on a specific edge.  It's been ages since I've 
used them so I can't recall the exact use case.  Makes me wonder whether 
something like this already exists in boost graph.

-Steve