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Re: Keyword checking [message #31013 is a reply to message #31012]

Wed, 29 May 2002 06:52

Jaco van Gorkom
Messages: 97
Registered: November 2000

Member

"Randall Skelton" <rhskelto@atm.ox.ac.uk> wrote in message
news:Pine.LNX.4.33.0205291352100.19744-100000@mulligan.atm.o x.ac.uk...
>
> pro test, B=b
> if n_elements(b) eq 0 and arg_present(b) eq 1 then $
> message, 'You passed an undefined variable as a keyword'
> if n_elements(b) gt 0 then b = 'passed'
> end
>
> Surely there must be something simpiler than my 2-step approach ;)

If the difference between "passing nothing" and "not passing anything"
is really important to you, then this is it :-)
Of course, you could always write this into your own function
KEYWORD_UNDEFINED()...

cheers,
Jaco

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[Message index]

		Re: Keyword checking By: R.Bauer on Wed, 29 May 2002 09:02
		Re: Keyword checking By: Liam E. Gumley on Wed, 29 May 2002 08:22
		Re: Keyword checking By: thompson on Wed, 29 May 2002 07:55
		Re: Keyword checking By: Paul Van Delst[1] on Wed, 29 May 2002 07:15
		Re: Keyword checking By: Jaco van Gorkom on Wed, 29 May 2002 07:04
		Re: Keyword checking By: Jaco van Gorkom on Wed, 29 May 2002 06:52
		Re: Keyword checking By: David Fanning on Wed, 29 May 2002 06:43

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