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From: "Christoph M. Becker" <cmbecker69@arcor.de>
Newsgroups: comp.lang.javascript
Subject: Re: function to get frequencies of a char array
Date: Sat, 24 Jan 2015 18:05:49 +0100
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Evertjan. wrote:

> Thomas 'PointedEars' Lahn <PointedEars@web.de> wrote on 24 jan 2015 in 
> comp.lang.javascript:
> 
>> No, but
>>
>>   if (e) { counts[e] ? ++counts[e] : (counts[e] = 1); }
> 
> if (e) counts[e] = (counts[e]|0) + 1;

That has slightly different semantics, which probably won't matter in
practise, though.  Nonetheless I would prefer the following (if I'd use
a shortcut at all):

  if (e) counts[e] = (counts[e] || 0) + 1;

-- 
Christoph M. Becker