SPUG: scalar swap challenge

[Brian Hatch]

> swap challenge> A swap code fragment typically looks like this.
> swap challenge> 
> swap challenge>     $temp = $left;
> swap challenge>     $right = $left;
> swap challenge>     $left = $temp;

I think many of us will know the trick you're thinking of.
However the fact is that a temporary variable will be
faster (three assignments vs three mathematical operations).



--
Brian Hatch                  The Theorem Theorem:
   Systems and
   Security Engineer           If If, Then Then.
http://www.ifokr.org/bri/

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