Re: meaning of (toto)? true : false

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From	Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To	Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
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Date	Sun, 30 Oct 2011 22:00:50 +0100
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Subject	Re: meaning of (toto)? true : false
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Andreas Bergmaier wrote:

> Hans-Georg Michna schrieb:
>> ? true : false
>> is another way to write,
>> "I don't understand JavaScript."
>>
>> If you really have to transform something into a boolean that
>> isn't already one, just write !! in front of it, but think again
                           ^^^^^^^^^^^^^^^^^^^^^^^
>> whether that is really needed.
> 
> I'm sure in his application he uses other values like strings. This
> console.log-thing was just to show his problem. Of course he could have
> written:
>   console.log("Why is this "+foo ? "true" : "false" + "?")

You appear to have missed the point:

  console.log("Why is this " + !!foo + "?");

> but does it matter?

If it leads to inefficient, error-prone code, then yes.


PointedEars
-- 
    realism:    HTML 4.01 Strict
    evangelism: XHTML 1.0 Strict
    madness:    XHTML 1.1 as application/xhtml+xml
                                                    -- Bjoern Hoehrmann

Thread

meaning of (toto)? true : false Une Bévue <unbewusst.sein@fai.invalid> - 2011-10-29 07:46 +0200
  Re: meaning of (toto)? true : false Une Bévue <unbewusst.sein@fai.invalid> - 2011-10-29 07:53 +0200
  Re: meaning of (toto)? true : false "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2011-10-29 14:47 -0700
    Re: meaning of (toto)? true : false Une Bévue <unbewusst.sein@fai.invalid> - 2011-10-30 05:37 +0100
  Re: meaning of (toto)? true : false Hans-Georg Michna <hans-georgNoEmailPlease@michna.com> - 2011-10-30 21:38 +0100
    Re: meaning of (toto)? true : false Andreas Bergmaier <andber93@web.de> - 2011-10-30 21:55 +0100
      Re: meaning of (toto)? true : false Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-10-30 22:00 +0100
    Re: meaning of (toto)? true : false Dr J R Stockton <reply1144@merlyn.demon.co.uk> - 2011-10-31 18:06 +0000

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