[jrbl@jrbl.org: Re: reducing charset size for compressibility with case-shift characters (in Python)]

[Kragen Javier Sitaker]

----- Forwarded message from Joe Blaylock <jrbl at jrbl.org> -----

Subject: Re: reducing charset size for compressibility with case-shift
 characters (in Python)
From: Joe Blaylock <jrbl at jrbl.org>
To: Kragen Javier Sitaker <kragen at canonical.org>

On Sat, 2011-04-16 at 03:37 -0400, Kragen Javier Sitaker wrote:
> lowercase = 'abcdefghijklmnopqrstuvwxyz'
> numbers = '0123456789'
> 
>             else:
>                 yield current_state[lowercase.index(char)]
>         elif char == DC3:
>             current_state = numbers

Couldn't you achieve a modest increase in compressibility at the expense of
calculation time by representing all numerical sequences as base-26 encoded
strings?  You'd have to run a buffer large enough for any numeric runs you
process, but the transformation itself is easy.  You couldn't do that nice
direct-indexing thing any more though.  Well, not without creating more
abstraction.

Joe






----- End forwarded message -----