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Re: Javascripts help with interpretation

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Den måndagen den 30:e juni 2014 kl. 23:36:45 UTC+2 skrev Andrew Poulos:
> On 1/07/2014 7:23 AM, jonas.thornvall@gmail.com wrote:
> 
> > Sometimes when i read code i realise my programming skils far to ancient.
> 
> >
> 
> > return ((N<0) ? "-"+HexN : HexN);
> 
> >
> 
> >
> 
> > This function return is a string but what does ((N<0) ? actually mean there is no if. And what about "-"+HexN : HexN);
> 
> >
> 
> > The first could be string building but what is : (colon) supposed to mean is it append?
> 
> 
> 
> Sorry for sending this to you personal email - I pressed Reply instead 
> 
> of Followup :-(
> 
> 
> 
> Maybe this link will help
> 
> <https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Conditional_Operator>
> 
> 
> 
> Andrew Poulos

Well i found some very nice written code for a generic base changer, probelm is i really do not get the last line. Is he just reversing sign, if the string is negative?

<script type="text/javascript">

function toRadix(N,radix) {
 var HexN="", Q=Math.floor(Math.abs(N)), R;
 while (true) {
  R=Q%radix;
  HexN = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ".charAt(R)
       + HexN;
  Q=(Q-R)/radix; 
  if (Q==0) break;
 }
 return ((N<0) ? "-"+HexN : HexN);
}

out=toRadix(65453,11)
document.write(out);
</script>

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Javascripts help with interpretation jonas.thornvall@gmail.com - 2014-06-30 14:23 -0700
  Re: Javascripts help with interpretation Andrew Poulos <ap_prog@hotmail.com> - 2014-07-01 07:36 +1000
    Re: Javascripts help with interpretation jonas.thornvall@gmail.com - 2014-06-30 14:51 -0700
  Re: Javascripts help with interpretation Tim Slattery <tim@risingdove.com> - 2014-06-30 18:04 -0400

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