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From: "Christoph M. Becker" <cmbecker69@arcor.de>
Newsgroups: comp.lang.javascript
Subject: Re: Overflow, integers and strings
Date: Fri, 01 May 2015 23:37:20 +0200
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Thomas 'PointedEars' Lahn wrote:

> Christoph M. Becker wrote:
> 
>>       function arraySwap(x,y) {
>>         var tempArrName = this[y];
>>         this[y] = this[x];
>>         this[x] = tempArrName;
>>       }
> 
> Also, “this” is undefined in arraySwap() if that function is called in 
> strict mode.

Yes, indeed.  strict mode prevents such dangerous constructs where the
global object would be (inadvertently?) modified.

It seems to me that a generally correct arraySwap() could be written by
interchanging the array *elemtents*, but I'd rather avoid such a
function at all.

-- 
Christoph M. Becker