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RE: Assignment Vs conditions

From: Jimmy Cerra <jimbofc@yahoo.com>
Date: Fri, 26 Apr 2002 15:03:40 -0400
To: <www-math@w3.org>
Message-ID: <000101c1ed55$1966dfe0$0100a8c0@locutus>
I have an idea...  How about using the apply element as the following:

<apply>
  <ci>y</ci>
  <ci>x</ci>
</apply>

Where the above means, "Apply y to x," or "Make x the value of y," or "x=y".
This method may need to have the apply element extended to support this.

Still, this makes sense when translated into words (to me at last)!

---
Jimmy Cerra





-----Original Message-----
From: www-math-request@w3.org [mailto:www-math-request@w3.org] On Behalf Of
Plechsmíd Martin
Sent: Friday, April 26, 2002 7:59 AM
To: 'Kamlesh Pandey, Noida'; www-math@w3.org
Subject: RE: Assignment Vs conditions

Maybe I'm mistaken in what <declare> means in MathML, but in general there
is a big difference between assignment and declaration. If you declare
something, the declaration holds forever (in the declaration scope), while
you can reassign a value. You can emulate declarations via assignments, but
not the other way around.

Therefore it doesn't seem to me a good idea to use <declare> for
assignments. This would be a misuse of the <declare> operator, though I
understand that the MathML language probably dosn't offer a better
alternative.

	Martin.


> -----Původní zpráva-----
> Od: Kamlesh Pandey, Noida [mailto:kamleshp@noida.hcltech.com]
> Odesláno: 26. dubna 2002 7:41
> Komu: www-math@w3.org
> Předmět: RE: Assignment Vs conditions
>
>
> I thank all of you for our quick and comprehensive reply.
>
> I'm writing and equation processor and this was the major
> stumbling block
> for me.
> I've decided to use <declare> for assignment. Although the
> problem remains
> that it is not
> rendered as per specification. However IBM Techexplorer plugin for IE
> renders <declare>.
>
> I agree with Tim when he writes
> "I do find it somewhat puzzling that the same element should
> be used for
> both mere declarations and definitions, but not rendered. Giving an
> identifier a value is probably significant for what follows,
> so omitting
> the fact when presenting the content to a human seems likely to cause
> confusion"
>
> I've facing problems with IE plugins in displaying MathML content.
> Both Techexplorer and mathplayer does not display the content
> markup example
> shown in the
> website http://www.w3.org/Math/XSL.
>
> I think that the XSL mathml.xsl is doesn't work correctly.
> Has anyone faced
> similar problems with these plugins?
> Are there any other good plugins available?
>
Received on Friday, 26 April 2002 15:03:49 GMT

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