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Re: Variable undefined after while-cycle? [message #26667 is a reply to message #26659]

Wed, 19 September 2001 18:11

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

David Fanning <david@dfanning.com> writes:

> Reimar Bauer (r.bauer@fz-juelich.de) writes:
>
>> you should use () only for functions
>> [] should be used for arrays.
>
> Please, let's not get started on proper programming
> technique.

And, as far as I'm concerned, round parentheses are accepted by IDL by
default for array indexing, so they must be correct :-) (as are the
square brackets too of course).

This same wisdom can be found in the ancient text of _EXTRAmasutra,
whose IDL-ku is almost a lost form of expression today. The guru says
it in an obscure way, but the meaning is clear:

index, NOT careless
to, slice AND dice (arrays), a
round (blade) = sharper

I still do not yet use a "square blade" for my array indexing, it is
too dull. :-)

Craig

[ For those uninitiated in IDL-ku, it reads like a 5-7-5 syllable
haiku, but is a compileable IDL program. The equals sign "=" can
either be silent or the single syllable "is". ]

--
------------------------------------------------------------ --------------
Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
------------------------------------------------------------ --------------

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[Message index]

		Re: Variable undefined after while-cycle? By: R.Bauer on Thu, 20 September 2001 00:19
		Re: Variable undefined after while-cycle? By: Craig Markwardt on Wed, 19 September 2001 18:11
		Re: Variable undefined after while-cycle? By: Martin Downing on Wed, 19 September 2001 09:28
		Re: Variable undefined after while-cycle? By: David Fanning on Wed, 19 September 2001 09:16
		Re: Variable undefined after while-cycle? By: R.Bauer on Wed, 19 September 2001 08:46
		Re: Variable undefined after while-cycle? By: Pavel A. Romashkin on Wed, 19 September 2001 08:01

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