Hello Doug Snead <[EMAIL PROTECTED]> :-)
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Thanks, Alex!
It has been a year or so since I have downloaded the latest picolisp. I've been
using a July 2007 version every day for a picolisp media contact database web
application, no problems.
I would like to roll out a personal or portable version, so people can install
this database o
--- On Fri, 10/9/09, Tomas Hlavaty wrote:=0A> How many pro=
cesses do you need?=A0 I can fork about 500=0A> from one parent=0A> (limite=
d by my OS set up).=A0 And because picolisp is,=0A> well, "pico", it=0A> do=
esn't take much memory (picolisp uses less that 2MB).=0A=0AAnd if picolisp =
is buil
Here's one shell script I used to use for that (I called it lisptags) ...
hopefully it still works :-)
#!/bin/sh
# make a tags file for pico lisp source files.
# use:
# lisptags foo.l bar.l baz.l ... bof.l
# generate the file 'tags'
# [based on lisptags csh script by John Foderaro, c.1982]
Alexander (or anyone!),
I'm looking at something called golog
http://www.cs.toronto.edu/cogrobo/main/systems/index.html it is a "A
high-level agent programming language... based on Prolog (usually Eclipse, SWI,
LPA, and Quintus.)"
"An interpreter in SWI Prolog can be found here.
http://www.c
Yiorgos, Alexander:
Thanks for the info. Unfortunately, not so straightforward as I had hoped.
Doug
--- On Fri, 6/17/11, Yiorgos Adamopoulos wrote:
> From: Yiorgos Adamopoulos
> Subject: Re: golog in minipicolisp ?
> To: picolisp@software-lab.de
> Date: Friday, June 17, 2011, 3:07 AM
> O
Another question have I :-)
I'd like to embed minipicolisp in C applications. I'd like to be able to
create a minipicolisp environment, and then pass strings to it (commands) for
execution. It would also be great to be able get back the results in a string.
In lua, you'd do something like,
ed minipicolisp).
Cheers,
Doug
--- On Sat, 6/18/11, Doug Snead wrote:
> From: Doug Snead
> Subject: embedding minipicolisp
> To: picolisp@software-lab.de
> Date: Saturday, June 18, 2011, 8:20 PM
> Another question have I :-)
>
> I'd like to embed minipicolisp in C appli
Ok, here's my first attempt at using minipicolisp as a library. (Leaving aside
the issue of get/put for now. Basically replacing main() with:
#if !LIBRARY
/*** Main ***/
int main(int ac, char *av[]) {
char *p;
. . .
#else
// we're building as a library
void miniPicoLisp_init( const ch
--- On Tue, 6/21/11, Alexander Burger wrote:
> Yes, the Apply* lines are needed (or what does the "??"
> imply?).
I wasn't sure if I needed that for my initialisation - you answered my question
there.
> I see one remaining problem: The 'ErrRst' global, the error
> restart jump
> buffer, is not
", (long)ev);
Env.get = getSave;
1 get: '('
2 get: '+'
3 get: ' '
4 get: '1'
5 get: ' '
6 get: '2'
7 get: ')'
8 get: '
'
read ok
doPrint(rv):
1 2
eval ok, = 6
...
Segmentation fault
But clo
Hi Alexander,
Ha! That last code snippet got me to where I needed to get :-) THANKS!!
(Now when I close my eyes I see pilog - what does that mean?)
Cheers,
Doug
--- On Wed, 6/22/11, Alexander Burger wrote:
> From: Alexander Burger
> Subject: Re: embedding minipicolisp
> To: picol
"PicoLisp
"For backtracking, Pilog (PicoLisp Prolog) is the natural choice."
http://rosettacode.org/wiki/Amb#PicoLisp
(I didn't see any other example that was obviously smaller than picolisp.)
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What's the best way to trace pilog?I'd be interested in hearing how people
go about debugging pilog programs.
Doug
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x27;get) or if nothing else works a traceAll can give you
good hints in those situations.
On Sun, Jun 26, 2011 at 6:27 AM, Doug Snead wrote:
What's the best way to trace pilog? I'd be interested in hearing how people
go about debugging pilog programs.
Doug
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(or (equal @A (And @W1 @W2)))
(or (equal @A (If @W1 @W2)))
(or (equal @A (Is @W1 @W2)))
(or (equal @A (Or @W1 @W2)))
(or (equal @A (some @X @W)))
(or (equal @A (all @X @W
# %restoreSitArg(poss(A),S,poss(A,S)).
(prove (goal '(restoreSitArg (poss @A) @S (pos
--- On Sun, 6/26/11, Doug Snead wrote:
> (be isAtom (@A) (not (equal @A (Neg @W)))
> (or (equal @A (And @W1 @W2)))
> (or (equal @A (If @W1 @W2)))
> (or (equal @A
> (Is @W1 @W2)))
> (or (equal @A (Or @W1 @W2)))
> (or (equal @A (some @X @W)))
>
Thanks Alex!The more I look at it, the more I like pilog for golog because
golog uses prolog-ish backtracking so heavily. When I look at this attempt to
make a lua golog for example
http://drops.dagstuhl.de/opus/volltexte/2010/2631/pdf/10081.Ferrein.2631.pdf ,
I think a picolisp/pilog -ba
Burger wrote:
> From: Alexander Burger
> Subject: Re: golog in minipicolisp
> To: picolisp@software-lab.de
> Date: Sunday, June 26, 2011, 11:50 AM
> On Sun, Jun 26, 2011 at 01:44:33AM
> -0700, Doug Snead wrote:
> > (It looks not so bad, once I studied golog_swi.pl a
> bit
This is exactly what I was looking for, thanks!
--- On Sun, 6/26/11, Alexander Burger wrote:
> It works by simply passing the names of the clauses you
> want to trace right after the '?' (i.e the ['sym' ..] arguments).
> ... With tracing
> : (? append (append (a b c) @X (a b c d e f)))
--
U
I have a question about how or/2 works in pilog. Here's my test of or/2:
~/lisp/miniPicoLisp
$ ./pil
: (be a (3))
-> a
: (be b (3))
-> b
: (? (a 3))
-> T
: (be foo (@N) (or (a @N) (b @N)))
-> foo
: (? foo a b or (foo 3))
1 (foo 3)
1 (or (a 3) (b 3))
-> NIL
:
Shouldn't that be T ?
It seems
Hmmm... the clauses seem paired in like so, in the or/2 reference, like
(or
((equal 3 @X) (equal @X 4))
((equal 7 @X) (equal @X 7)) )
When I similarly pair the clauses of or/2:
(be foo (@N) (or ((a @N) (b @N
It works.
:-)
--- On Wed, 6/29/11, Doug Snead wrote
More pilog adventures!
Alex, would it be possible to give pilog an and/2 rule similar to the or/2 rule
that pilog has now? Sometimes refactoring pilog around the lack of an and/2 is
a pain. Here's an example, where a rule has a kind of a logical expression
(with prolog backup):
holds(A,S
Ha! The "and" is implicit ... I should seen that - the or/2 example there was a
clue.
Thanks for the assistance!! I feel close to getting golog (and elevator
example) working.
Cheers,
Doug
--- On Wed, 6/29/11, Alexander Burger wrote:
> From: Alexander Burger
> Subject: Re: and/2 an
--- On Wed, 6/29/11, Alexander Burger wrote:
> So this should be written as
>
>(be holds (@A @S)
> (or
> ((restoreSitArg @A @S @F) (@ solve (list (-> @F
> ((not (restoreSitArg @A @S @F)) (isAtom @A) (@ solve (list (-> @A ) )
holds(A,S) :- restoreSitArg(A,S,F), F ;
\+ restore
Hi Alex,
Thanks for your help!
holds(A,S) :- restoreSitArg(A,S,F), F ;
\+ restoreSitArg(A,S,F), isAtom(A), A.
What I really want is this:
(be holds (@A @S)
(or
((restoreSitArg @A @S @F) @F)
((not (restoreSitArg @A @S @F)) (isAtom @A) @A) ) )
But the above (with a @F or
Here's the issue boiled down to a simpler test case :-) First, swi-prolog:
# cat t.pl
a(3).
foo(N) :- N.
bar(a(X)) :- a(X).
# swipl -f t.pl
% /root/prolog/t.pl compiled 0.00 sec, 2,800 bytes ...
?- trace.
true.
[trace] ?- bar(a(Z)).
Call: (6) bar(a(_G386)) ? creep
Call: (7) a(_G386
Nice! I like that site rosettacode.org lots. (I stopped counting how many
computer 'languages' I have assimilated over the years!)
This example again shows off picolisp/pilog nicely.
http://rosettacode.org/wiki/24_game/Solve#PicoLisp
I think the perl solution may be a tad smaller. But mos
The "solve" way seems to some closest to doing it.
~/lisp/miniPicoLisp
$ cat t.l
(be a (3))
(be foo (@C)
# (@C -> @C)
# (call @C)
(@ print (solve (list (-> @C
)
$ ./pil t.l
: (? a foo (foo (a @Z)))
1 (foo (a @Z))
(((@Z . 3)))-> T
So I can see that it is correctly solving for @Z
Thanks Alex!!!
We have golog in pilog. Er, I think :-) If not we're pretty dang close.
Still trying to get the simple elevator example going from "Knowledge in
Action" as a test. http://www.cs.toronto.edu/cogrobo/kia/simpleElevator
http://books.google.com/books?q=%22proc%28goFloor%22 etc
Consider these five pilog assertions.
(be do ((Question @P) @S @S) (holds @P @S))
(be holds (@A @S)
(restoreSitArg @A @S @F)
(2 cons (-> @F)))
(be On (3 s0))
(be On (5 s0))
(be restoreSitArg ((On @N) @S (On @N @S)))
I define some tests.
(de t_1 () # ok
(? holds On restoreSitArg (holds
Thanks Alex!
I ended up taking it up to (5 cons (-> @F)) to get the first simple elevator
example working. Still a bit wonky in that respect. (Might have to adjust that
magic unification level number per application!)
But this definitely shows golog pilog is possible.
Here's a page where g
sertion
>
>
> On Mon, Jul 04, 2011 at 12:26:46AM -0700, Doug Snead
> wrote:
> > Consider these five pilog assertions.
> >
> > (be do ((Question @P) @S @S) (holds @P @S))
> >
> > (be holds (@A @S)
> > (restoreSitArg @A @S @F)
> > (2 cons (-
Hi Alex,
Ah, the situation is not so bad IMO. To begin with, this is an obscure thing
to do, I think - maybe somewhat pedantic. It forces golog to be prolog, in a
sense. And there are workarounds which you provided. And I think you're right:
it should be possible to restructure the involved go
http://developer.android.com/sdk/ndk/overview.html :
"Typical good candidates for the NDK are self-contained, CPU-intensive
operations that don't allocate much memory, such as signal processing, physics
simulation, and so on."
Ok, here's a plan for :-) a real Android picolisp ... start by taking
Might be nice to keep as much of that as possible with an android ndk/jni
approach also. For example for C file io one could do something like:
http://stackoverflow.com/questions/1992953/file-operations-in-android-ndk
Android picolisp would definitely need to coexist with java classes, no way
~/build/miniPicoLisp
# ./pil
: (heap)
-> 1
: (heap T)
-> 0
:
Shouldn't I see something else - or is that correct for miniPicoLisp ?
Cheers,
Doug
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Thanks, Alex.
I was looking at an older version for which heap returned the number of free
cells currently available. I need to get up to date - looks like that changed
since ... 2007! :-)
Cheers,
Doug
--- On Wed, 7/13/11, Alexander Burger wrote:
> From: Alexander Burger
> Subject: Re:
Here's another prolog-to-pilog translation, this time from John Fisher's
excellent "Prolog Tutorial, 2.19 Actions and plans"
http://www.csupomona.edu/~jrfisher/www/prolog_tutorial/2_19.html
prolog:
http://www.csupomona.edu/~jrfisher/www/prolog_tutorial/2_19pl.txt
to pilog:
http://victoriaf
I think you created a bot-trap :-)
--- On Fri, 7/15/11, Alexander Burger wrote:
> From: Alexander Burger
> Subject: The PicoLisp Ticker
> To: picolisp@software-lab.de
> Date: Friday, July 15, 2011, 12:58 AM
> Hi all,
>
> let me share my funny experiences about the PicoLisp
> Ticker, and how i
re: the 24jul10 comment: "The more of the higher-numbered problems... are
really typical Prolog problems! All of them involve recursive searches in some
solution space." http://picolisp.com/5000/-2-1K.html
Then perhaps picolisp's Prolog (pilog) would be ideal? I'm always happy to see
pilog ex
Alex (or anyone),
What's the best way to handle Definite Clause Grammar syntax in pilog?
"Definite Clause Grammar (DCG) and Prolog supports a special rule syntax for
writing DCGs. The syntax is simpler, much closer to the syntax one uses in
writing context-free grammar rules. When using the DC
THANK YOU!
I haven't tested that yet but I think that is exactly what I was looking for
there. Might be something to consider adding to pilog.l Seems to be fairly
standard in prologs - and useful for creating parsers :-)
Beautiful code, thanks again so much!
Cheers,
Doug
--- On Wed,
Hi Alex,
Man, thanks for all the pilog help so far! I'm working my way down the dcg
example here
http://www.csupomona.edu/~jrfisher/www/prolog_tutorial/7_3.html
And I notice that some of the non-terminals there have arguments, for example:
c(L) --> lead_in,arrange(L),end.
Not sure how t
Hi Alex,
I keep going back and forth on that, trying to think of a terse syntax that
will accommodate all the cases :-/
It may be that just handling the dcg cases which have no arguments well, would
be a good compromise.
I found out that you can read prolog dcg clauses into swi-prolog and then
Hi Alex,
Thank you so much - this seems to cover the wikipedia example I'll have to go
back over the dcg in
http://www.csupomona.edu/~jrfisher/www/prolog_tutorial/7_3.html
with this latest pilog dcg and see how it works now. The terminals and
non-terminals sometimes get mixed in the same
Hi Alex,
Thanks for the picolisp pointers :-) The sub? shrinks down one of the awkward
bits there. Unfortunately, I didn't see sub? in miniPicoLisp. The replace
seems like a better idea than using the surgical patch there - probably not a
good idea to modify a list passed in as an argument li
Hi Alex,
Is there a way I can make (mini)PicoLisp give me line numbers from .l source
files in error messages? There are lots of gnu and/or linux tools (like vim)
and IDEs etc., that want error messages in a format similar to what gcc spits
out, like:
Baz.cpp:321: error: 'foobar' was not decl
Thanks for the reply, Alex.
I need to use Windows without cygwin dlls for an application I'm working on
now. So, I had been using miniPicoLisp in my application, which compiles ok
under mingw. That let me avoid even trying to compile regular PicoLisp using
mingw, and the porting issues that
FWIW ... here's something I use instead of ctags for picolisp.
$ cat /usr/local/bin/lisptags
#!/bin/sh
# make a tags file for pico lisp source files.
# use:
# lisptags foo.l bar.l baz.l ... bof.l
# generate the file 'tags'
# [based on lisptags csh script by John Foderaro, c.1982]
awk '
/^
--- On Mon, 1/23/12, Jakob Eriksson wrote:
> The Java version opens up the path to Android jobs - and I
> have an impression that those are still a kind of Wild West.
I have a (slightly hacked) version of miniPicoLisp running as an android native
library as a proof of concept. No no additional
Date: Monday, January 23, 2012, 11:47 PM
>
>
> On January 24, 2012 at 7:49 AM Doug Snead
> wrote:
>
> >
> > I have a (slightly hacked) version of miniPicoLisp
> running as an android
> > native library as a proof of concept. No no
> addi
Alex,
I have a porting-related question for you.
After more android testing I'm finding a problem with (transient) variables
... (I think).
When I try a definition like this,
(de foo (x) x)
no problem,
(foo 123)
returns 123 as expected.
But when I try it this way:
(de baz ("X") "X")
--- On Thu, 1/26/12, Alexander Burger wrote:
> > (setq "V" 456)
> > at the top level (not in a definition) that works as
> expected
>
> Again strange. It shouldn't matter how the symbol is used
> (globally or bound locally).
Hi Alex,
Thanks for the guidance!
On second look, I was wrong about
More android + picolisp fun, this time with the full picolisp. Using the
android SDK and NDK, I hacked a picolisp/src/makefile to work for android's arm
processor like this:
--- makefile ---
[snip]
CFLAGS := -c -O2 -pipe \
-falign-functions=64 -fomit-frame-pointer -fn
protocol
?
--- On Wed, 2/22/12, Doug Snead wrote:
> From: Doug Snead
> Subject: server - IP socket error: Address family not supported by protocol
> To: picolisp@software-lab.de
> Date: Wednesday, February 22, 2012, 10:07 PM
> Hi Alex,
>
> I'm tying to get the example
Hi Alex,
Ah, ok ... hmmm, that's two different platforms I have seen that problem on,
then. The Android NDK also compiles the latest picoLisp ok, but then, same as
that other (more standard) linux, dies in that port function with the same
error.
I can drop back to a pre-IPv6 version of picol
Hi Alex,
No IPv6 in my ifconfig on my linux box ... and no ipconfig on the android.
When I drop back to picoLisp 2.3.7, I'm able to run the app example ok on my
linux box, and connect to the pico server with a browser.
The picolisp server then runs on the android, also.
Next step: conne
Hi Joe,
Very nice! I think it would be useful to be able to package complete picolisp
applications as android apps. Or, at least that might be a possibility.
Something to explore. I'm still hung up on trying to get android browser to
talk to the picolisp app server like that. I'm reading t
Joe,
Ha ... very interesting the way you download busybox to download picolisp!
I'm still wondering why I cannot connect to my picolisp server on android ...
but it looks like you have that issue licked.
Ok, so now this means we can package some picolisp client/server applications
as andro
The pilog trace can be helpful in these situations.
: (be bigger (me her))
: (be bigger (her son))
: (be bigger (son daughter))
: (be bigger (@x @y) (bigger @x @z) (bigger @z @y))
List the assertions you want to trace before the clause to be proved, in this
case "bigger" :
: (? bigger (bigger @
--- On Sun, 7/8/12, Christophe Gragnic wrote:
> : (be bigger (me her))
> -> bigger
> : (be bigger (her son))
> -> bigger
> : (be bigger (son daughter))
> -> bigger
> : (be bigger (@x @y) (bigger @x @z) (bigger @z @y))
> -> bigger
> : bigger
> -> NIL
> : (? (bigger @x meily))
> @x=alix
> @x=sw
H
Thorsten Jolitz
> Subject: Re: Android Demo
> To: picolisp@software-lab.de
> Date: Tuesday, October 9, 2012, 10:06 AM
> Doug Snead
> writes:
>
> Hi Joe and Doug,
>
> I read up your conversations about PicoLisp on Android in
> the mailing
> list and your articles in th
Oh boy! I've been thinking of something like this for a while.
What is the low-hanging fruit here, in the sense of, what applications might we
do faster/cheaper/better in hardware like this, than can be done otherwise?
The idea of pilog in hardware excites me too ... maybe time to go back and
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