[MERGE] rand_chars() optimization

[Marius Gedminas]

On Sun, Mar 11, 2007 at 04:39:43PM +0300, Dmitry Vasiliev wrote:
> >I suspect it might be a bit faster if you used a string rather than a
> >dict here:
> >
> >  _rand_chars_map = ALNUM * (255 / len(ALNUM) + 1)
> 
> But how it may helps to make rand_chars() any faster? With 
> _rand_chars_map as a dict you just can do later _rand_chars_map[raw_byte].

You can do the same with a string, only instead of a hash table lookup
that would translate to an array reference.

Uh, that's assuming raw_byte is actually a byte (int) and not a char.
If it's a char, then my suggestion doesn't make sense (but then I
suggest that the variable might be misnamed).

Marius Gedminas
-- 
There's an old story about the person who wished his computer were as easy to
use as his telephone. That wish has come true, since I no longer know how to
use my telephone.
	-- Bjarne Stroustrup
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