[Insight-developers] itkImageConstIteratorWithIndex.h

[Miller, James V (Research)]

I think your examples should both print 1.

So if possible (without breaking existing code), I would change the code. A
call to IsAtBegin() should return true if it is called immediately after a
GoToBegin(). Same for "end" versions.



> -----Original Message-----
> From: Mark Foskey [mailto:mark_foskey@unc.edu]
> Sent: Wednesday, April 23, 2003 12:12 PM
> To: insight-developers@public.kitware.com
> Subject: [Insight-developers] itkImageConstIteratorWithIndex.h
> 
> 
> In itkImageConstIteratorWithIndex.h, both IsAtBegin() and IsAtEnd() 
> return !m_Remaining.  It appears that
> 
>    it.GoToBegin();
>    std::cout << it.IsAtBegin() << std::endl;
> 
>    it.GoToEnd();
>    std::cout << it.IsAtEnd() << std::endl;
> 
> will both print 0.  Do we at least want to document this behavior?  I 
> can imagine scenarios where you might want to test whether an 
> iterator 
> has been incremented since GoToBegin() was called, although I think 
> they would be rare.
> 
> -- 
> Mark Foskey    (919) 843-5436  Computer-Aided Diagnosis and 
> Display Lab
> mark_foskey@unc.edu            Department of Radiology, CB 7515, UNC
> http://www.cs.unc.edu/~foskey  Chapel Hill, NC  27599-7515
> 
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