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Re: CASE statement [message #26530 is a reply to message #26529]

Mon, 10 September 2001 04:45

Martin Downing
Messages: 136
Registered: September 1998

Senior Member

>>> In IDL, is it possible to use mulitple expressions with a single
>>> statement?
>>>
>>> Something like:
>>>
>>> PRO CASE1, Tag
>>>
>>> case Tag of
>>>
>>> ;; The following line does not work.
>>> ('TIFF') or ('tiff'): begin
>>> print, "TAG is TIFF"
>>> end
[snip]
> Well, not that I've ever used it myself, but I have seen another nifty
form,
> something like this:
>
> case 1 of
> (tag eq 'TIFF') or $
> (tag eq 'TAFF') or $
> (tag eq 'FIFF') : begin & print,"Tag is TIFF (or a typo thereof)" & end
>
[snip]
>
> Whether this is a "proper form", I'll leave up to David :-)
>

It seems to me you all have a SWITCH-phobia :-)
have i missed something or shouldnt we just be writing:

SWITCH tag of
"TIFF":
"TAFF": BEGIN
print, "tagged image format"
BREAK
END
ELSE: print, "unknown format"
ENDSWITCH

Also, please dont encorage RSI to produce a !TRUE constant, as I and other
C/C++ users have trouble not reading this as "NOT TRUE". I guess it would be
OK to have !VALUES.TRUE though.

cheers
Martin

----------------------------------------
Martin Downing,
Clinical Research Physicist,
Orthopaedic RSA Research Centre,
Woodend Hospital, Aberdeen, AB15 6LS.

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[Message index]

		Re: CASE statement By: R.Bauer on Mon, 10 September 2001 04:54
		Re: CASE statement By: Martin Downing on Mon, 10 September 2001 04:45
		Re: CASE statement By: Jeff Guerber on Fri, 07 September 2001 20:18
		Re: CASE statement By: gmccabe14 on Fri, 07 September 2001 18:44
		Re: CASE statement By: Pavel A. Romashkin on Fri, 07 September 2001 16:16
		Re: CASE statement By: Kristian Kjaer on Fri, 07 September 2001 15:17
		Re: CASE statement By: Pavel A. Romashkin on Fri, 07 September 2001 14:30
		Re: CASE statement By: Brian Jackel on Fri, 07 September 2001 14:41
		Re: CASE statement By: David Fanning on Fri, 07 September 2001 14:00
		Re: CASE statement By: Stein Vidar Hagfors H[1] on Fri, 07 September 2001 13:39
		Re: CASE statement By: David Fanning on Fri, 07 September 2001 13:23
		Re: CASE statement By: marc schellens[1] on Wed, 12 September 2001 23:01
		Re: CASE statement By: george.mccabe on Wed, 03 October 2001 11:49

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