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Re: Generating keyword parameters from strings [message #67432 is a reply to message #67431]

Thu, 23 July 2009 12:48

Paul Van Delst[1]
Messages: 1157
Registered: April 2002

Senior Member

David Fanning wrote:
> Paul van Delst writes:
>
>> I really don't understand why, in the SUBCLASS::Get_Property method, I can get away with
>> using the _EXTRA keyword to the SUPERCLASS::Get_Property method, but it works. Go figure.
>
> The rule is you use _REF_EXTRA (or _REF_STRICT_EXTRA, etc) on
> the procedure or function *definition* line, but *all* extra
> parameters are to be *passed* with _EXTRA.

Ah, o.k. A nice, simple rule to remember.

Of course it would be nicer if I didn't have to remember it at all. Passing
arguments/keywords by reference or value is an implementation detail the user shouldn't be
concerned with. Having to consider it in IDL OO programming is mildly ironic.

cheers,

paulv

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[Message index]

		Re: Generating keyword parameters from strings By: Kenneth P. Bowman on Mon, 27 July 2009 14:26
		Re: Generating keyword parameters from strings By: David Fanning on Mon, 27 July 2009 07:54
		Re: Generating keyword parameters from strings By: Paul Van Delst[1] on Mon, 27 July 2009 07:39
		Re: Generating keyword parameters from strings By: David Fanning on Thu, 23 July 2009 13:03
		Re: Generating keyword parameters from strings By: Paul Van Delst[1] on Thu, 23 July 2009 12:48
		Re: Generating keyword parameters from strings By: Jeremy Bailin on Thu, 23 July 2009 05:14
		Re: Generating keyword parameters from strings By: Giorgio on Wed, 22 July 2009 17:01
		Re: Generating keyword parameters from strings By: Michael Galloy on Wed, 22 July 2009 15:55
		Re: Generating keyword parameters from strings By: Eric Hudson on Wed, 22 July 2009 13:46
		Re: Generating keyword parameters from strings By: David Fanning on Wed, 22 July 2009 11:03
		Re: Generating keyword parameters from strings By: Paul Van Delst[1] on Wed, 22 July 2009 11:00
		Re: Generating keyword parameters from strings By: JDS on Thu, 30 July 2009 08:21

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