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Groups > comp.lang.javascript > #27884
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
|---|---|
| Newsgroups | comp.lang.javascript |
| Subject | Re: Why does (a,b,c) return only c? |
| Date | 2015-05-26 14:42 +0200 |
| Organization | PointedEars Software (PES) |
| Message-ID | <2863608.gxWFnX0c9y@PointedEars.de> (permalink) |
| References | (1 earlier) <gf4c3c-iks.ln1@mail.binaryfoundry.ca> <XnsA4A5DF4D39BAAeejj99@194.109.133.246> <mk07ei$t55$1@speranza.aioe.org> <1687513.QYX3roR0lP@PointedEars.de> <mk1pc4$ajd$1@speranza.aioe.org> |
Joao Rodrigues wrote:
> On 26/05/2015 07:26, Thomas 'PointedEars' Lahn wrote:
>> Joao Rodrigues wrote:
>>> <https://javascriptweblog.wordpress.com/2011/04/04/the-javascript-comma-operator/>
>>
>> Bogus.
>
> A bit of disdain here.
Pardon?
> See an example:
> […]
Your point being?
>> […]
>> | var a, 5; //a is now 7
^
>> | //SyntaxError: missing variable name
^^^^^^^^^^^^^^^^^^^^^
>> is not a syntax error because “we [haven’t] wrapped the variable
>> assignment in parentheses”, but because _“5” is not a valid variable
^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> name_.
^^^^
> […]
>> The subsequent example in that article, where it works, is
>> […]
>> | var a = 5;
^
>> where not only the parentheses have been inserted, but magically the
^^^^^^^^^^^^^
>> comma has been replaced by a “=”. Surprise.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Wrong, […]
Nonsense.
--
PointedEars
FAQ: <http://PointedEars.de/faq> | SVN: <http://PointedEars.de/wsvn/>
Twitter: @PointedEars2 | ES Matrix: <http://PointedEars.de/es-matrix>
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Why does (a,b,c) return only c? Steven D'Aprano <steve@pearwood.info> - 2015-05-25 21:43 +1000
Re: Why does (a,b,c) return only c? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-25 14:17 +0200
Re: Why does (a,b,c) return only c? Luuk <luuk@invalid.lan> - 2015-05-25 14:42 +0200
Re: Why does (a,b,c) return only c? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-25 14:58 +0200
Re: Why does (a,b,c) return only c? "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-05-25 14:57 +0200
Re: Why does (a,b,c) return only c? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-25 15:07 +0200
Re: Why does (a,b,c) return only c? "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-05-25 15:32 +0200
Re: Why does (a,b,c) return only c? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-25 17:50 +0200
Re: Why does (a,b,c) return only c? Luuk <luuk@invalid.lan> - 2015-05-25 19:53 +0200
Re: Why does (a,b,c) return only c? "D. Aaron Sawyer" <aaron@110.net> - 2015-05-25 19:49 -0300
Re: Why does (a,b,c) return only c? John-Paul Stewart <jpstewart@sympatico.ca> - 2015-05-25 13:58 -0400
Re: Why does (a,b,c) return only c? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-25 21:57 +0200
Re: Why does (a,b,c) return only c? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-05-25 19:24 -0300
Re: Why does (a,b,c) return only c? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-05-26 12:26 +0200
Re: Why does (a,b,c) return only c? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-05-26 09:36 -0300
Re: Why does (a,b,c) return only c? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-05-26 14:42 +0200
Re: Why does (a,b,c) return only c? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-05-26 09:53 -0300
Re: Why does (a,b,c) return only c? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-26 15:15 +0200
Re: Why does (a,b,c) return only c? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-05-26 15:17 +0200
Re: Why does (a,b,c) return only c? Scott Sauyet <scott.sauyet@gmail.com> - 2015-05-26 08:59 -0700
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