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Re: regarding scope of variables [message #46508 is a reply to message #46501]

Sat, 26 November 2005 06:51

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

IDLmastertobe writes:

> Thanks Dr.Fanning. I never used pointers IDL. It looks like the variable
> "yarr" only exists in this one procedure and as soon as the procedure is
> called again, "yarr" is no longer defined if !firsty is not 1. Is there a
> way to declear a global dynamic variable that can preserve value when the
> procedure is called multiple times and the size of the variable can vary
> depending on the array we are copying? such as Vector function in C++ and
> JAVA.

I think you are looking for a pointer. :-)

You might like to read the pointer tutorial:

http://www.dfanning.com/misc_tips/pointers.html

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: regarding scope of variables By: R.Bauer on Sun, 27 November 2005 01:09
		Re: regarding scope of variables By: David Fanning on Sat, 26 November 2005 06:51
		Re: regarding scope of variables By: IDLmastertobe on Sat, 26 November 2005 01:19
		Re: regarding scope of variables By: David Fanning on Fri, 25 November 2005 20:42

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