Re: float("nan") in set or as key

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From	Dennis Lee Bieber <wlfraed@ix.netcom.com>
Subject	Re: float("nan") in set or as key
Date	Sun, 29 May 2011 20:36:30 -0700
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On Mon, 30 May 2011 03:50:15 +1000, Chris Angelico <rosuav@gmail.com>
declaimed the following in gmane.comp.python.general:

> 
> Doesn't matter. It still wouldn't be equal to itself, even though it
> 'is' itself, which will greatly confuse anything that optimizes that
> away. Numbers are well-behaved; NaN is not a number; NaN is not
> well-behaved. It makes sense... in a way.

	As I recall, NaN behaves just like Null does in SQL... Null never
compares equal to Null.

-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
        wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/

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Re: float("nan") in set or as key Albert Hopkins <marduk@letterboxes.org> - 2011-05-28 20:28 -0400
  Re: float("nan") in set or as key Erik Max Francis <max@alcyone.com> - 2011-05-28 17:44 -0700
  Re: float("nan") in set or as key Grant Edwards <invalid@invalid.invalid> - 2011-05-29 02:25 +0000
    Re: float("nan") in set or as key Wolfgang Rohdewald <wolfgang@rohdewald.de> - 2011-05-29 10:27 +0200
      Re: float("nan") in set or as key Grant Edwards <invalid@invalid.invalid> - 2011-05-29 14:41 +0000
        Re: float("nan") in set or as key MRAB <python@mrabarnett.plus.com> - 2011-05-29 18:44 +0100
          Re: float("nan") in set or as key Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-29 18:27 +0000
        Re: float("nan") in set or as key Chris Angelico <rosuav@gmail.com> - 2011-05-30 03:50 +1000
        Re: float("nan") in set or as key Christian Heimes <lists@cheimes.de> - 2011-05-29 20:05 +0200
          Re: float("nan") in set or as key Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-29 18:46 +0000
        Re: float("nan") in set or as key Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2011-05-29 20:36 -0700

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