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Re: wrapper functions [message #50494 is a reply to message #50492]

Thu, 05 October 2006 19:28

Kenneth P. Bowman
Messages: 585
Registered: May 2000

Senior Member

In article <MPG.1f8f60c52b1f6f4b989d05@news.frii.com>,
David Fanning <davidf@dfanning.com> wrote:

> Robbie writes:
>
>> Don't most IDL procedures use N_PARAMS() to check for positional
>> parameters?
>
> I think I've used N_PARAMS() about a dozen times in my IDL
> lifetime. :-)

I find that N_PARAMS() with SWITCH is very handy for setting defaults in
procedures where optional positional parameters make sense.

PRO BLAH, A, B, C

SWITCH N_PARAMS() OF
0 : A = ...
1 : B = ...
2 : C = ...
ENDSWITCH

Ken Bowman

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[Message index]

		Re: wrapper functions By: David Fanning on Thu, 05 October 2006 20:04
		Re: wrapper functions By: Kenneth P. Bowman on Thu, 05 October 2006 19:28
		Re: wrapper functions By: David Fanning on Thu, 05 October 2006 19:11
		Re: wrapper functions By: Robbie on Thu, 05 October 2006 19:01
		Re: wrapper functions By: David Fanning on Thu, 05 October 2006 18:35
		Re: wrapper functions By: David Fanning on Thu, 05 October 2006 18:28
		Re: wrapper functions By: Robbie on Thu, 05 October 2006 18:14
		Re: wrapper functions By: David Fanning on Thu, 05 October 2006 17:52
		Re: wrapper functions By: Robbie on Thu, 05 October 2006 17:13
		Re: wrapper functions By: Dominic Metzger on Thu, 05 October 2006 16:51
		Re: wrapper functions By: David Fanning on Thu, 05 October 2006 16:39
		Re: wrapper functions By: K. Bowman on Fri, 06 October 2006 06:35
		Re: wrapper functions By: Dominic Metzger on Thu, 05 October 2006 22:32

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