POV-Ray : Newsgroups : povray.advanced-users : isosurface: Does the order of multiple functions matter? : Re: isosurface: Does the order of multiple functions matter? Server Time
2 Oct 2023 20:16:50 EDT (-0400)
  Re: isosurface: Does the order of multiple functions matter?  
From: Kenneth
Date: 28 Jan 2023 23:50:00
Message: <web.63d5fa0c9b90547b9b4924336e066e29@news.povray.org>
Cousin Ricky <ric### [at] yahoocom> wrote:
> <soapbox>
> It is dangerous programming practice to rely on order of evaluation,
> unless the language definition explicitly specifies it.  POV-Ray has no
> such specification.
> </soapbox>
> In your context, it does not appear that the order makes any difference,
> because functions in POV-Ray cannot have side effects.  Of course,
> liberal use of parentheses will guarantee *precedence* of evaluation,
> but this has limited effect on the *order* of evaluation.

I can't say that I really understand those distinctions, conceptually. In any
case, my attempts so far at sprinkling parentheses "here, there, and eveywhere"
in my simplistic example code has had no effect; the order of the isosurface's
inner functions still shows no visible difference when changed around.

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