[development] Note that PHP arrays are fast

[Dries Buytaert]

On 11 Apr 2007, at 03:55, Karoly Negyesi wrote:
>> * modulo is slower than bitwise-and and I think that this was the  
>> main culprit to the even/odd flip performance
>
> But the patch was a bugfix and the race was between
>
>     $class = $class == 'even' ? 'odd' : 'even'
>
>     $class = $flip[$class];
>
> Because the key is not reliable, so we must flip the class.

Yes, in that particular patch, the if-test would sometimes break  
(depending on the input data).  The patch fixed a bug, and the tiny  
performance improvement was just a secondary effect.

--
Dries Buytaert  ::  http://www.buytaert.net/