cells-devel

cells-devel@common-lisp.net

567 discussions

Cells for C#?
by Frank Buss 23 Nov '20

23 Nov '20

I tried Cells a few years ago and really liked it. Of course nearly nobody uses Common Lisp these days anymore and this project looks pretty dead, and all links on common-lisp.net/project/cells/ are dead. But I could use such a framework for a C# game I write with Unity. Maybe someone knows if something like this exists?

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[cells-devel] Patches for ECL
by Mark Cox 25 Oct '12

25 Oct '12

G'day, Please find attached two patches that allow cells to work on ECL. Thanks Mark

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[cells-devel] Connecting two models
by Mark Cox 10 Oct '12

10 Oct '12

G'day, I think my mental model of Cells is wrong. Perhaps someone can help. I have two model classes: (defmodel model () ((item-index :initarg :item-index :accessor item-index)) (:default-initargs :item-index (c-in 0))) (defmodel view () ((item-index :initarg :item-index :accessor item-index)) (:default-initargs :item-index (c-in 0))) What I would like to do is to connect the item-index slot of an instance of MODEL to the item-index in an instance of VIEW. i.e. (defun connect-model-and-view (model view) (setf (item-index view) (c? (item-index model)))) which does not appear to be possible. I have navigated around the issue by introducing a third model class, CONTROLLER, that has an item-index slot initialised with (c? (item-index (^model))) and an observer that updates the view. However, I am wondering if this is the correct way as I seem to require inserting WITH-INTEGRITY in the observer. Thanks Mark

3 6

[cells-devel] Cells-test status
by Mark Cox 01 Oct '12

01 Oct '12

G'day, I am interested in using the cells-test system to guide my efforts on getting cells to work with ECL. Are the tests current as they fail on SBCL and CLISP? Thanks Mark The error I get is: <SOME PARTS OMITTED> "----------UTILSRESET----------------------------------" 0> : output thought #<cells::person #x1a1383e5> "speedy" 0> : i am thinking "speedy" you can call me (speedy chill) (CELLS::ATTEMPTING (NULL (CELLS::MD-SLOT-CELL CELLS::P 'CELLS::SPEECH))) (CELLS::ATTEMPTING (ASSOC 'CELLS::SPEECH (CELLS::CELLS-FLUSHED CELLS::P))) (CELLS::ATTEMPTING (CELLS::C-OPTIMIZED-AWAY-P (CDR (ASSOC 'CELLS::SPEECH (CELLS::CELLS-FLUSHED CELLS::P))))) SYSTEM::%STRUCTURE-REF: 1 is not a structure of type CELLS:CELL [Condition of type SIMPLE-TYPE-ERROR]

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[cells-devel] How to get started?
by Jim Prewett 18 Apr '12

18 Apr '12

Hello, I've recently stumbled across Cells and it sounds pretty interesting. I'm wondering how to get started learning about how to use Cells. In general, I've got several Lisp projects that could use a GUI and the various Cells-based GUI projects look interesting to me. I think I should probably learn how to use Cells (at some basic level) before trying to dive into one of the GUI packages. Is there a Cells-based GUI package that is currently preferred? In general, I learn best by first following a simple example, then modifying it to do my bidding. Can someone show me how to get started? I'm also wondering if someone can explain the difference between DEFMODEL and DEFMD to me. Thanks so much!, Jim James E. Prewett Jim(a)Prewett.org download(a)hpc.unm.edu Systems Team Leader LoGS: http://www.hpc.unm.edu/~download/LoGS/ Designated Security Officer OpenPGP key: pub 1024D/31816D93 HPC Systems Engineer III UNM HPC 505.277.8210

4 3

[cells-devel] can one make dependencies between models?
by Mirko Vukovic 18 Apr '12

18 Apr '12

Hello, I am doing very basic cell-stuff, much like the ones in the doc folder: Not liking excel and its cousins, I am implementing spread-sheet like calculations in cells. My question: 1) Can I build two models (model1, model2) and specify that a slot in model2 depends on changes in some other slot in model1? 2) Related: can I change a slot specification in a model. For example from `c-in' to `c?'. I assume that I can, but I would have to re-initialize the model somehow. Correct? I am also very interested in the question posted just a few minutes ago. I would like to build an automated way of generating a GUI front end my cell models. Thanks, Mirko

3 6

Re: [cells-devel] TripleCells: A new twist to the unbound variable CACHE challenge ...
by Kenneth Tilton 22 Mar '12

22 Mar '12

On 3/21/2012 3:44 PM, Frank Goenninger wrote: >>> Von: Kenneth Tilton<kentilton(a)gmail.com> >>> Datum: 21. März 2012 14:57:23 MEZ >>> An: Frank Goenninger<frgo(a)me.com> >>> Betreff: Re: [cells-devel] Triple Cells: AllegroGraph 4.5 "porting" >>> >>> Sorry, we went so late last night I completely forgot about this. I'll keep trying to find time (and keep sending me emails so I remember to). I will try to dig thru the below. >>> >>> Do I gather there is a new error now about CACHE? I do not even recognize that. > After a full recompile I get another error: > Error: Attempt to take the value of the unbound variable `CACHE'. > > Note: Not cache? but cache ... > > Digging into the 3c code reveals: > > The cell rule gets stored as a string. This is done in #'3c? : > > (defmacro 3c? (rule&key test ephemeral observer) > `(call-3c? '(lambda (node cache cache?) ;;<<<<<<<<------ This is the "offending" LoC ... > (declare (ignorable cache cache?)) > (let ((*calc-nodes* (cons node *calc-nodes*))) > ,rule)) ;;<<<<<<<<<------ There cache is not defined anymore - see below for explanation ... > :test ,test > :observer ,observer > :ephemeral ,ephemeral)) > > When running #'test-prep I get the following last lines in a trace: > > 0> 3c?-rule: got rule "(lambda (triple-cells::node triple-cells::cache triple-cells::cache?) > (declare (ignorable triple-cells::cache triple-cells::cache?)) > (let ((triple-cells::*calc-nodes* > (cons triple-cells::node triple-cells::*calc-nodes*))) > (let ((h (3c (3c-find-id \"dell\") !hw:happen))) > (trc \"rule sees happen\" h) > (cond ((string-equal h \"arrive\") \"home\") > ((string-equal h \"leave\") \"away\") > (triple-cells::cache? cache) > (t \"away\")))))" > > I can't see what is wrong with this... cache needs the explicit package as well: (cond ((string-equal h \"arrive\") \"home\") ((string-equal h \"leave\") \"away\") (triple-cells::cache? triple-cells::cache) ;;<-- need package on both (t \"away\")))))" HTH, ken

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[cells-devel] Triple Cells: AllegroGraph 4.5 "porting"
by Frank Goenninger 20 Mar '12

20 Mar '12

Hi Kenny, I just began using Triple Cells. We have planned a rather large AllegroGraph-based implementation and as a fan of Cells I am porting Triple Cells to AllegroGraph 4.5. I am running in a situation where I get a problem with 3c-pulse-advance: (I have instrumented 3c a bit ...;-) 0> PULSE> ---- advancing: (:change) 0> 3c-make storing type !hw:computer future-part 0> 3c-in nil t equal !hw:echo-happen {_:anon4} 0> stmt-new called with {_:anon3} !hw:happen {_:anon4} {_:anon4} 0> stmt-new (3c-cell? o) <_:anon4 type input> 0> 3c-install-cell called with s p o {_:anon3} !hw:happen {_:anon4} 0> subject-cells-node called with s = {_:anon3} 0> subject-cells-node tr nil 0> subject-cells-node new-blank-node {_:anon5} 0> subject-cells-node (add-triple s !ccc:cells n) 13 0> 3c-install-cell subject-cells-node s = {_:anon5} 0> subject-cells-node called with s = {_:anon3} 0> subject-cells-node tr <_:anon3 cells _:anon5> 0> subject-cells-node (object tr) = {_:anon5} 0> 3c-install-cell (add-triple (subject-cells-node s) p o) 14 0> 3c-install-cell (add-triple o !ccc:is-cell-of-model s) 15 0> 3c-install-cell (add-triple o !ccc:is-cell-of-predicate p) 16 0> stmt-new called with {_:anon3} !hw:location {_:anon6} {_:anon6} 0> stmt-new (3c-cell? o) <_:anon6 type ruled> 0> 3c-install-cell called with s p o {_:anon3} !hw:location {_:anon6} 0> subject-cells-node called with s = {_:anon3} 0> subject-cells-node tr <_:anon3 cells _:anon5> 0> subject-cells-node (object tr) = {_:anon5} 0> 3c-install-cell subject-cells-node s = {_:anon5} 0> subject-cells-node called with s = {_:anon3} 0> subject-cells-node tr <_:anon3 cells _:anon5> 0> subject-cells-node (object tr) = {_:anon5} 0> 3c-install-cell (add-triple (subject-cells-node s) p o) 22 0> 3c-install-cell (add-triple o !ccc:is-cell-of-model s) 23 0> 3c-install-cell (add-triple o !ccc:is-cell-of-predicate p) 24 0> stmt-new called with {_:anon3} !hw:response {_:anon7} {_:anon7} 0> stmt-new (3c-cell? o) <_:anon7 type ruled> 0> 3c-install-cell called with s p o {_:anon3} !hw:response {_:anon7} 0> subject-cells-node called with s = {_:anon3} 0> subject-cells-node tr <_:anon3 cells _:anon5> 0> subject-cells-node (object tr) = {_:anon5} 0> 3c-install-cell subject-cells-node s = {_:anon5} 0> subject-cells-node called with s = {_:anon3} 0> subject-cells-node tr <_:anon3 cells _:anon5> 0> subject-cells-node (object tr) = {_:anon5} 0> 3c-install-cell (add-triple (subject-cells-node s) p o) 31 0> 3c-install-cell (add-triple o !ccc:is-cell-of-model s) 32 0> 3c-install-cell (add-triple o !ccc:is-cell-of-predicate p) 33 0> cell-model called with c = {_:anon7} 0> cell-model object {_:anon3} 0> subject-cells-node called with s = {_:anon3} 0> subject-cells-node tr <_:anon3 cells _:anon5> 0> subject-cells-node (object tr) = {_:anon5} 0> subject-cells-node called with s = {_:anon3} 0> subject-cells-node tr <_:anon3 cells _:anon5> 0> subject-cells-node (object tr) = {_:anon5} 0> 3c-cell-pulse: c = {_:anon6} 0> 3c-cell-pulse: sp = nil 0> 3c-cell-pulse: sp is NIL ! It would help if you could shed some light on this ... (I know you have other stuff to do but still ;-) TIA! Hope all is fine on your side. Missing you on c.l.l. ... Cheers Frank

2 6

[cells-devel] functional programming
by Dan Lentz 19 Mar '12

19 Mar '12

I'm an extreme newbie to cells and have just begun reviewing the literature so this may be a FAQ, but in general how does cells relate to "functional" programming practice? My first reaction is that is seems antithetical, as it inherently introduces state and eliminates referential transparency. However if one looks at it as a declarative approach in making statements about relations, perhaps not. maybe it can therefore be used in a functional style along the same lines as standard clos/mop, which can also be considered stateful if evaluated at the level of the individual sub protocols etc. Really my question is "is cells something one should consider if otherwise one has worked hard to achieve functional style practices?" ---- Replace the method the carefully chosen name deletes the comment

3 2

[cells-devel] Additional info AllegroGraph 4.5 porting: Screendump of RDF DB
by Frank Goenninger 18 Mar '12

18 Mar '12

.... see attached screendump. TIA again. Cheers Frank

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