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Re: -2 ** 2

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In article <slrnogmdu6.50n.jon+usenet@sable.unequivocal.eu>, Jon
Ribbens <jon+usenet@unequivocal.eu> wrote:

>On 2017-05-04, Stefan Ram <ram@zedat.fu-berlin.de> wrote:
>>   In a recent Firefox:
>>
>> -2 ** 2
>>
>> SyntaxError: unparenthesized unary expression can't appear on
>> the left-hand side of '**'
>>
>>   . Can't seem to find the corresponding rule in a recent copy
>>   of ECMAScript (12.6), though.
>
>Chrome behaves similarly:
>
>  -2 ** 2
>  Uncaught SyntaxError: Unexpected token **
>  (-2) ** 2
>  4
>
>Presumably this is a sensible thing to avoid bugs, e.g. Python does
>this:
>
>  >>> -2**2
>  -4
>  >>> (-2)**2
>  4
>
>I think most people would expect both expressions to equal 4.

Depends on operator precedence.

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"If you're not able to ask questions and deal with the answers without feeling 
that someone has called your intelligence or competence into question, don't 
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Re: -2 ** 2 Jon Ribbens <jon+usenet@unequivocal.eu> - 2017-05-04 14:13 +0000
  Re: -2 ** 2 Tim Streater <timstreater@greenbee.net> - 2017-05-04 16:56 +0100
    Re: -2 ** 2 Mark Lloyd <not@mail.invalid> - 2017-05-04 12:08 -0500
    Re: -2 ** 2 John G Harris <niam@jghnorth.org.uk.invalid> - 2017-05-04 20:02 +0100
    Re: -2 ** 2 Jon Ribbens <jon+usenet@unequivocal.eu> - 2017-05-04 23:44 +0000
      Re: -2 ** 2 "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-05-05 09:16 +0200
        Re: -2 ** 2 John G Harris <niam@jghnorth.org.uk.invalid> - 2017-05-05 09:56 +0100
          Re: -2 ** 2 "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-05-05 11:16 +0200
            Re: -2 ** 2 John G Harris <niam@jghnorth.org.uk.invalid> - 2017-05-06 10:27 +0100
              Re: -2 ** 2 "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-05-06 11:42 +0200
  Re: -2 ** 2 Robert Heller <heller@deepsoft.com> - 2017-05-04 11:01 -0500
  Re: -2 ** 2 Sam E <why.should.this@be.email.invalid> - 2017-05-04 12:04 -0500
    Re: -2 ** 2 John G Harris <niam@jghnorth.org.uk.invalid> - 2017-05-04 19:29 +0100
      Re: -2 ** 2 Tim Streater <timstreater@greenbee.net> - 2017-05-04 19:51 +0100
        Re: -2 ** 2 John G Harris <niam@jghnorth.org.uk.invalid> - 2017-05-05 09:41 +0100
        Re: -2 ** 2 Tim Slattery <tim@risingdove.com> - 2017-05-05 11:02 -0400
          Re: -2 ** 2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-05-05 17:47 +0200
          Re: -2 ** 2 Tim Streater <timstreater@greenbee.net> - 2017-05-05 16:49 +0100
            Re: -2 ** 2 Tim Slattery <tim@risingdove.com> - 2017-05-06 11:21 -0400
              Re: -2 ** 2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-05-06 19:04 +0200
                Re: -2 ** 2 Tim Slattery <tim@risingdove.com> - 2017-05-07 12:40 -0400
                Re: -2 ** 2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-05-07 20:35 +0200
                Re: -2 ** 2 RobG <rgqld@iinet.net.au> - 2017-05-10 17:46 -0700
                Re: -2 ** 2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-05-11 03:00 +0200
          Re: -2 ** 2 Mark Lloyd <not@mail.invalid> - 2017-05-05 23:20 -0500
          Re: -2 ** 2 Dr J R Stockton <reply1700@merlyn.demon.co.uk.invalid> - 2017-05-08 23:19 +0100
      Re: -2 ** 2 Dr J R Stockton <reply1700@merlyn.demon.co.uk.invalid> - 2017-05-08 23:16 +0100
        Re: -2 ** 2 "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2017-05-09 09:55 -0700
        Re: -2 ** 2 Dr J R Stockton <reply1700@merlyn.demon.co.uk.invalid> - 2017-05-10 17:39 +0100
          Re: -2 ** 2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-05-11 03:08 +0200

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