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Re: Return UNDEFINED from a function [message #50728 is a reply to message #50727]

Wed, 11 October 2006 16:04

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Ed Hyer writes:

> Shouldn't the RETURN statement check to see that its argument is
> defined? Am I wrong that this is bad compiler behavior?

An undefined variable is a perfectly valid variable type
in IDL. Why wouldn't you be able to return it? :-)

OK, maybe it's weird. But I don't think it's necessarily
"bad". I've even used the feature on occasion.

Cheers,

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

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[Message index]

		Re: Return UNDEFINED from a function By: David Fanning on Thu, 12 October 2006 19:52
		Re: Return UNDEFINED from a function By: badjelly.witch on Thu, 12 October 2006 14:27
		Re: Return UNDEFINED from a function By: JD Smith on Thu, 12 October 2006 12:54
		Re: Return UNDEFINED from a function By: Jean H. on Thu, 12 October 2006 11:21
		Re: Return UNDEFINED from a function By: JD Smith on Thu, 12 October 2006 10:53
		Re: Return UNDEFINED from a function By: MarioIncandenza on Thu, 12 October 2006 01:04
		Re: Return UNDEFINED from a function By: MarioIncandenza on Wed, 11 October 2006 16:28
		Re: Return UNDEFINED from a function By: MarioIncandenza on Wed, 11 October 2006 16:09
		Re: Return UNDEFINED from a function By: David Fanning on Wed, 11 October 2006 16:04

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