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MathGroup Archive 2004

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RE: Re: bug in IntegerPart ?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg47996] RE: [mg47968] Re: bug in IntegerPart ?
  • From: "DrBob" <drbob at bigfoot.com>
  • Date: Wed, 5 May 2004 08:11:02 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

I think you just said (to paraphrase), "A few functions evaluate their
arguments in a non-standard way, and all the other functions are wrappers."

Bringing up the arcane and poorly explained way Plot evaluates its arguments
hardly makes Help look any better. To say nothing of Compile!

DrBob

www.eclecticdreams.net


-----Original Message-----
From: Bill Rowe [mailto:readnewsciv at earthlink.net] 
To: mathgroup at smc.vnet.net
Subject: [mg47996] [mg47968] Re: bug in IntegerPart ?

On 5/2/04 at 4:50 AM, drbob at bigfoot.com (DrBob) wrote:

>When you say this, however:

>>>But this phrase could also be taken to mean "does not affect
>>>evaluation of arguments" which is correct.

>NO function affects evaluation of its arguments, or if one did,
>what would that look like? 

How about Plot? Plot does evaluate its arguments in a non-standard way as
compared to say Exp or Sqrt. So, some functions do affect the way their
arguments are evaluated.

>Yes, the author probably had something in mind that IS true; but
>what he wrote isn't true, and that's been pointed out before. Many
>times. So far as I know, EVERYWHERE the wrapper concept is
>mentioned in the documentation, it's incorrect. Or, if it is
>correct in some unknown sense, it's a simple matter to link those
>references to an explanation.

>Many of us are doing WRI's training, consulting, and debugging for
>them, negating the value of our work by giving it away for free;
>the least WRI can do is respond when we point out confusion in the
>documentation.

I agree there are several aspects of the documentation that could be made
clearer and that the documentation for "wrapper" functions like BaseForm or
Matrix form is an example of documentation that could be made clearer. I
don't agree the documentation is clearly incorrect.
--
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