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Subscript by -1 HARD to Track Down [message #84761] Fri, 07 June 2013 13:13 Go to next message
David Fanning is currently offline  David Fanning
Messages: 11724
Registered: August 2001
Senior Member
Folks,

Wow, that new ability in IDL 8 to subscript an array by -1 can be a HARD
bugger to track down when it goes wrong. :-(

I may have to put that one on my Most Pernicious list.

Cheers,

David


--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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Re: Subscript by -1 HARD to Track Down [message #84762 is a reply to message #84761] Fri, 07 June 2013 13:24 Go to previous messageGo to next message
John Correira is currently offline  John Correira
Messages: 25
Registered: August 2011
Junior Member
On 06/07/2013 04:13 PM, David Fanning wrote:
> Folks,
>
> Wow, that new ability in IDL 8 to subscript an array by -1 can be a HARD
> bugger to track down when it goes wrong. :-(
>
> I may have to put that one on my Most Pernicious list.
>
> Cheers,
>
> David
>
>
Is there a compile option to turn this "feature" off?

John

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Re: Subscript by -1 HARD to Track Down [message #84763 is a reply to message #84762] Fri, 07 June 2013 13:49 Go to previous message
David Fanning is currently offline  David Fanning
Messages: 11724
Registered: August 2001
Senior Member
John Correira writes:

> Is there a compile option to turn this "feature" off?

Probably. I just have to remember to put it into every program module
I've ever written. :-)

Cheers,

David

P.S. Which, of course, breaks all my programs and prevents them from
being run in anything but IDL 8. Happy updating everyone! ;-)



--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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