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Re: Bad Advice? [message #89602 is a reply to message #89595]

Thu, 30 October 2014 16:00

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On 10/30/14, 12:14 PM, David Fanning wrote:
> Folks,
>
> The latest article on the IDL Data Point blog contains this advice:
>
> "Be very careful using the OBJ_DESTROY method."
>
> I'm not sure this is particularly good advice, especially if you write
> IDL code that might inadvertently be run on a non-IDL 8 version of IDL.
> In those cases (and I think I would still argue in ALL cases), you might
> want to be *sure* to use the OBJ_DESTROY method!

Yes, I use OBJ_DESTROY as well since it's easy and doesn't make a
compatibility issue.

But the context from the article is to be careful with OBJ_DESTROY when
you have multiple references to a single heap variable. Calling
OBJ_DESTROY on one will destroy the reference of all of them.

Mike
--
Michael Galloy
www.michaelgalloy.com
Modern IDL: A Guide to IDL Programming (http://modernidl.idldev.com)
Research Mathematician
Tech-X Corporation

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[Message index]

		Bad Advice? By: David Fanning on Thu, 30 October 2014 11:14
		Re: Bad Advice? By: Craig Markwardt on Thu, 30 October 2014 14:29
		Re: Bad Advice? By: Michael Galloy on Thu, 30 October 2014 16:00

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