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Re: Pass-By-Reference question. [message #38497 is a reply to message #38496]

Wed, 10 March 2004 13:24

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

Mark Hadfield <m.hadfield@niwa.co.nz> writes:
>
> Not so. As Tim said, keywords passed in via inheritance override
> keywords supplied explicitly. This is a very useful feature and
> virtually all of my code relies on it.
>

Mark, are you relying on a documented feature of IDL, or are you just
assuming that because it works, it's right? I've never assumed that
keyword inheritance works by overriding explicit values. In fact, I
would have assumed the exact opposite, namely that the explicit
overrides the generic.

> As to why Tim's example works for XRANGE & YRANGE but not NODATA, I have
> no idea. Perhaps you are not really doing what you think you are doing.

I agree, the Tim's example is truly strange.

Craig

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[Message index]

		Re: Pass-By-Reference question. By: Mark Hadfield on Thu, 11 March 2004 12:07
		Re: Pass-By-Reference question. By: David Fanning on Thu, 11 March 2004 04:40
		Re: Pass-By-Reference question. By: Chris Lee on Thu, 11 March 2004 02:12
		Re: Pass-By-Reference question. By: Timm Weitkamp on Thu, 11 March 2004 01:28
		Re: Pass-By-Reference question. By: David Fanning on Wed, 10 March 2004 20:34
		Re: Pass-By-Reference question. By: Mark Hadfield on Wed, 10 March 2004 20:24
		Re: Pass-By-Reference question. By: timrobishaw on Wed, 10 March 2004 19:04
		Re: Pass-By-Reference question. By: Mark Hadfield on Wed, 10 March 2004 15:55
		Re: Pass-By-Reference question. By: timrobishaw on Wed, 10 March 2004 15:34
		Re: Pass-By-Reference question. By: Craig Markwardt on Wed, 10 March 2004 13:24
		Re: Pass-By-Reference question. By: Mark Hadfield on Wed, 10 March 2004 12:13
		Re: Pass-By-Reference question. By: Chris Lee on Wed, 10 March 2004 01:37
		Pass-By-Reference question. (ARG_PRESENT) By: Andry William (Please on Fri, 12 March 2004 11:52
		Re: Pass-By-Reference question. By: Craig Markwardt on Thu, 11 March 2004 17:37

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