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Re: null and NaN

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From Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups comp.lang.javascript
Subject Re: null and NaN
Date Sun, 07 Jun 2015 09:59 +0200
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Joao Rodrigues wrote:

> On 06/06/15 03:39, Thomas 'PointedEars' Lahn wrote:
>> Joao Rodrigues wrote:
>>> [typeof null === "object] happens due to a bug in the first version of 
>>> JS [1].
>>>
>>> [1] <http://www.2ality.com/2013/10/typeof-null.html>
>> […] 
>> It could be a bug, but it could also have been *intentional*.  Only
>> Brendan Eich, sole author of the first JavaScript version [2], can say
>> for sure.
> 
> Yes, Brendan once considered the need to fix typeof [1], but rejected
> that proposal stating: "I think it is too late to fix typeof. The change
> proposed for typeof null will break existing code."
> 
> [1] <http://wiki.ecmascript.org/doku.php?id=proposals:typeof>
> 
> In another discussion [2], he wrote: "In general, typeof seems like a
> mess that will be hard to reform sensibly."
> 
> [2] <http://wiki.ecmascript.org/doku.php?id=discussion:typeof>

AISB, in hindsight Eich admitted *design* errors.  That does not prove 
that it was a *bug caused by the code itself* as claimed by Dr. Rauschmeyer, 
and you, based only on his speculation.  He committed a historian’s fallacy, 
and you an /ipse dixit/ one.

>> However, that the ECMAScript Language Specification [3] […] says:
>> […]
>> indicates that it is _not_ a bug.  “null” *has* something to do with
>> objects that other primitive values have not.
> 
> These references only prove that JS was prematurely standardized, making
> necessary corrections more difficult to be implemented.

Assumption, not evidence.

-- 
PointedEars
FAQ: <http://PointedEars.de/faq> | SVN: <http://PointedEars.de/wsvn/>
Twitter: @PointedEars2 | ES Matrix: <http://PointedEars.de/es-matrix>
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Thread

Re: null and NaN Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-06-05 00:55 -0300
  Re: null and NaN Robert Heller <heller@deepsoft.com> - 2015-06-05 06:57 -0500
    Re: null and NaN Steven D'Aprano <steve@pearwood.info> - 2015-06-07 18:47 +1000
  Re: null and NaN Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-06-06 08:39 +0200
    Re: null and NaN Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-06-06 23:15 -0300
      Re: null and NaN Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-06-07 09:59 +0200
        Re: null and NaN Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-06-07 22:30 -0300
          Re: null and NaN Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-06-10 20:48 +0200
            Re: null and NaN Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-06-11 10:01 -0300
              Re: null and NaN "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-06-11 15:28 +0200
                Re: null and NaN Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-06-11 11:34 -0300
                Re: null and NaN "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-06-11 21:07 +0200
                Re: null and NaN Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-06-11 17:29 -0300
                Re: null and NaN "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-06-11 23:15 +0200

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