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Re: Storing !NULL in struct [message #83525]

Wed, 13 March 2013 07:46

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On 3/13/13 2:17 am, Tom Grydeland wrote:
> And it would be useful _to me_ if I could put a !NULL in a struct.
> I'm using the struct for UVALUEs in widgets, and it would be nice if
> they allowed _any_ well-defined IDL value.

But !null is undefined:

IDL> help, !null
<Expression> UNDEFINED = !NULL
IDL> print, size(!null, /type)
0

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]

		Re: Storing !NULL in struct By: Michael Galloy on Wed, 13 March 2013 07:46
		Re: Storing !NULL in struct By: tom.grydeland on Wed, 13 March 2013 01:17
		Re: Storing !NULL in struct By: Bob[4] on Tue, 12 March 2013 11:15
		Re: Storing !NULL in struct By: tom.grydeland on Fri, 15 March 2013 01:10

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