Re: expression syntax

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Subject: Re: expression syntax
From: "M. David Peterson" <m.david@xxxxxxxxxx>
Date: Mon, 15 Nov 2004 06:04:31 -0800

G. Ken Holman wrote:

XPath 1.0 Section 3.4

  "When neither object to be compared is a node-set and the
   operator is <=, <, >= or >, then the objects are compared
   by converting both objects to numbers and comparing the
   numbers according to IEEE 754."

Mucho Gracias Ken! I will note this in my notebook of "references that may come in handy again some day" section :)

And "2004-11-15" is not a number, so the cast to a number results in NaN

Yeah, the "2004-11-15" not being considered a number I knew, but without referencing the spec I was unsure of the exact nature of the number function and what the intended primary purpose was.

... which, BTW, doesn't compare true in any comparison with anything, including itself.

Wait, are you refering to attember a cast to a number and then comparing? Obviously if compared to another string of equal value it would evaluate to true... or am I missing something that is important to understand in the comparison of this particular string?

I hope this helps.

It does, as always! Thanks Ken!

<M:D/>

........................... Ken

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Current Thread

RE: expression syntax, (continued)
- George James - 15 Nov 2004 11:41:45 -0000
  - David Carlisle - 15 Nov 2004 11:45:47 -0000
  - M. David Peterson - 15 Nov 2004 12:33:03 -0000
    - G. Ken Holman - 15 Nov 2004 12:39:19 -0000
    - M. David Peterson - 15 Nov 2004 14:04:56 -0000 <=
    - David Carlisle - 15 Nov 2004 14:10:34 -0000
    - xptm - 15 Nov 2004 15:19:27 -0000
    - David Carlisle - 15 Nov 2004 15:25:40 -0000
    - David Carlisle - 15 Nov 2004 12:43:01 -0000

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