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Re: duplicator an array

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From "Christoph M. Becker" <cmbecker69@arcor.de>
Newsgroups comp.lang.javascript
Subject Re: duplicator an array
Date Thu, 14 Apr 2016 19:41:55 +0200
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On 14.04.2016 at 06:00, Aleksandro wrote:

> On 13/04/16 22:27, JRough wrote:
>
>> Okay, supposing the above works then I thought I would make an anonymous function in the duplicator method.  This would make it work the way the problem was first outlined above.  The only problem is how do I capture the value of the two arrays?
>>
>>
>> I guess you would do something like Array.prototype.duplicator = (function (){
>>     return  this.concat(arr.slice(0));
>> })()
> 
> Try:
> 
> Array.prototype.duplicate = function ()
> {
> 	this.push.apply(this, this.slice(0))
> }


The usual caveats wrt. augmenting built-in objects apply, though, see
e.g.
<http://peter.michaux.ca/articles/javascript-the-good-parts-built-in-object-augmentation-and-namespacing>.

-- 
Christoph M. Becker

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Thread

duplicator an array JRough <janis.rough@gmail.com> - 2016-04-13 18:27 -0700
  Re: duplicator an array Aleksandro <aleksandro@gmx.com> - 2016-04-14 01:00 -0300
    Re: duplicator an array JRough <janis.rough@gmail.com> - 2016-04-14 09:53 -0700
    Re: duplicator an array "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-04-14 19:41 +0200
      Re: duplicator an array Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-04-14 22:09 +0200
        Re: duplicator an array Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-04-14 22:23 +0200
    Re: duplicator an array Stefan Weiss <krewecherl@gmail.com> - 2016-04-16 14:27 +0200
      Re: duplicator an array Joao Rodrigues <jr@none.com> - 2016-04-16 12:01 -0300
        Re: duplicator an array Joao Rodrigues <jr@none.com> - 2016-04-16 13:43 -0300
      Re: duplicator an array Aleksandro <aleksandro@gmx.com> - 2016-04-16 14:13 -0300
  Re: duplicator an array bharat.bandgar009@gmail.com - 2017-05-03 01:33 -0700

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