[Pyrex] Speeding up custom string lowercasing with Pyrex

[Alexy Khrabrov]

On Oct 31, 2007, at 5:17 PM, Francesc Altet wrote:
> Here is a raw implementation of what Stefan is saying: [...awesome  
> Pyrex!...]
> On my machine, this is around 500 times faster than your first try.

Thanks Francesc, Stefan, Yannick, and everybody else -- great  
advice!  Yannick was correct, too -- translate()-based rulower did it  
in 5 min 14 sec, while Francesc's version came close second with 5  
min 36 sec.  But Francesc's Pyrex example, based on Stefan's  
suggestions, is very instructive and I'll surely use it as a basis  
for similar fast-scan functions on strings.

Cheers,
Alexy