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Groups > comp.lang.javascript > #13017
| Message-ID | <5091390.GdagIssoVF@PointedEars.de> (permalink) |
|---|---|
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
| Organization | PointedEars Software (PES) |
| Date | 2012-03-23 23:02 +0100 |
| Subject | Re: call by reference |
| Newsgroups | comp.lang.javascript |
| References | <jkhrtr$i06$1@news.albasani.net> |
| Followup-To | comp.lang.javascript |
Followups directed to: comp.lang.javascript
Andreas Bergmaier wrote:
> I know, JavaScript does not support call-by-reference. Every function
> invocation does call-by-value, even if that value is a reference value
> to an array-/function-/plain-Object, and not a primitive.
Correct.
> Yet, there is a javascript thing
There is no "javascript".
> that stores values by reference: the arguments object.
No. According to ECMAScript Edition 5(.1) [ES5], section 10.6, the
Arguments object has special internal [[Get]] and [[Set]] methods to allow
the observed behavior.
> > function kill(a) { for (var i=0;i<a.length;i++) a[i]=false; }
> > function x(a,b,c) { kill(arguments); return[a,b,c] };
> > x(true,true,true)
> [false, false, false]
>
> I did not assign to a, b or c. Can this be termed "call-with-references"
> or something?
Yes (it can be termed something).
The behavior you observed has been removed for strict code in [ES5].
PointedEars
--
Anyone who slaps a 'this page is best viewed with Browser X' label on
a Web page appears to be yearning for the bad old days, before the Web,
when you had very little chance of reading a document written on another
computer, another word processor, or another network. -- Tim Berners-Lee
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call by reference Andreas Bergmaier <andber93@web.de> - 2012-03-23 13:56 +0100
Re: call by reference Scott Sauyet <scott.sauyet@gmail.com> - 2012-03-23 07:10 -0700
Re: call by reference "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-03-23 15:23 +0000
Re: call by reference Scott Sauyet <scott.sauyet@gmail.com> - 2012-03-23 09:28 -0700
Re: call by reference "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-03-23 19:41 +0000
Re: call by reference Gene Wirchenko <genew@ocis.net> - 2012-03-23 13:43 -0700
Re: call by reference "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-03-23 21:18 +0000
Re: call by reference BGB <cr88192@hotmail.com> - 2012-03-23 15:23 -0700
Re: call by reference Gene Wirchenko <genew@ocis.net> - 2012-03-23 15:27 -0700
Re: call by reference "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-03-24 00:19 +0000
Re: call by reference Norman Peelman <npeelmandog@cfl.rr.com> - 2012-03-28 06:43 -0400
Re: call by reference "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-03-28 14:50 +0000
Re: call by reference Aatu Koskensilta <aatu.koskensilta@uta.fi> - 2012-03-28 18:06 +0300
Re: call by reference "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-03-28 15:57 +0000
Re: call by reference Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2012-03-28 23:22 +0200
Re: call by reference "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-03-29 07:18 +0000
Re: call by reference Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2012-03-29 13:34 +0200
Re: call by reference David Mark <dmark.cinsoft@gmail.com> - 2012-03-29 18:30 -0700
Re: call by reference Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2012-04-03 00:09 +0200
Re: call by reference David Mark <dmark.cinsoft@gmail.com> - 2012-04-02 17:43 -0700
Re: call by reference Robert Baer <robertbaer@localnet.com> - 2012-03-30 00:49 -0800
Re: call by reference Scott Sauyet <scott.sauyet@gmail.com> - 2012-03-28 13:33 -0700
Re: call by reference John G Harris <john@nospam.demon.co.uk> - 2012-03-24 11:34 +0000
Re: call by reference Aatu Koskensilta <aatu.koskensilta@uta.fi> - 2012-03-26 22:46 +0300
Re: call by reference Gene Wirchenko <genew@ocis.net> - 2012-03-26 18:38 -0700
Re: call by reference Aatu Koskensilta <aatu.koskensilta@uta.fi> - 2012-03-27 05:13 +0300
Re: call by reference Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-03-27 18:31 +0200
Re: call by reference Aatu Koskensilta <aatu.koskensilta@uta.fi> - 2012-03-27 21:31 +0300
Re: call by reference Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-03-27 21:03 +0200
Re: call by reference "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2012-04-10 22:03 -0700
Re: call by reference Scott Sauyet <scott.sauyet@gmail.com> - 2012-03-25 07:34 -0700
Re: call by reference "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-03-25 15:53 +0000
Re: call by reference Asen Bozhilov <asen.bozhilov@gmail.com> - 2012-03-27 05:15 -0700
Re: call by reference BGB <cr88192@hotmail.com> - 2012-03-23 13:03 -0700
Re: call by reference Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-03-23 23:02 +0100
Re: call by reference John G Harris <john@nospam.demon.co.uk> - 2012-03-24 11:40 +0000
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