Sorry bout that. Your searching was probably as difficult as my attempts
to pronounce it.
> it looks like "Lukasiewiczian NULL" is just the nifty NULL
> that SQL has, and the nifty ways that it affects logical
> and aggregate operations. Actually, something I wouldn't mind
> seeing in other languages -- I can't say if perl is one of those,
> but if it can be provided by expansion, that would be neato.
>
> Miko, did I get the right thing out of that?
Yup. It would be cool to be able to overload &&, ||, and ! to implement
Lukasiewiczian logic within a given scope. I'm no expert, but I wrote a
short essay explaining Lukasiewiczian logic. See
http://ars.userfriendly.org/cartoons/read.cgi?id=20020904&tid=389032
Trivia: Jan Lukasiewicz is the Polish in "Reverse Polish Notation". Trivia
2: my mom, Carole O'Sullivan nee Lucas, says Lukasiewicz is probably my
second cousin fifteen times removed, or something like that. It's probably
my best credentials in the math world.
-Miko
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Looks like the X value of the 4 (or 9) state logics that ASIC
designers use. I use Perl to do ASIC testbenches and stuff: so
I'll probably be constructing something similar (and hopefully
I'll have some nice bitwise and/or operators available: I use
bitwise & and | frequently; though I can accept that the
majority of Perl users don't). Maybe I'll implement Verilog as
a Parrot language.
Dave.
I suspect that it would be possible to implement this with properties
and overloading.
http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2001-11/msg00124.html
--
Paul Johnson - pa...@pjcj.net
http://www.pjcj.net