gmane.lisp.cells.devel

can one make dependencies between models?

Mirko Vukovic — 2012-04-17T18:17:22

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

How to get started?

Jim Prewett — 2012-04-17T17:18:07

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< at >Prewett.org download< at >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

Additional info AllegroGraph 4.5 porting: Screendumpof RDF DB

Frank Goenninger — 2012-03-18T22:04:09

.... see attached screendump.

TIA again.

Cheers
    Frank

Triple Cells: AllegroGraph 4.5 "porting"

Frank Goenninger — 2012-03-18T21:53:13

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

functional programming

Dan Lentz — 2012-03-18T18:20:05

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

ELS 2012, Zadar, Croatia

Marco Antoniotti — 2012-02-01T13:07:47

Apologies for the multiple postings.

PAPER SUBMISSION DEADLINE EXTENDED

European Lisp Symposium 2012, Zadar, Croatia, April 30th - May 1st, 2012

http://european-lisp-symposium.org

The purpose of the European Lisp Symposium is to provide a forum for
the discussion and dissemination of all aspects of design,
implementation and application of any of the Lisp and Lisp-inspired
dialects, including Common Lisp, Scheme, Emacs Lisp, AutoLisp, ISLISP,
Dylan, Clojure, ACL2, ECMAScript, Racket, SKILL, and so on. We
encourage everyone interested in Lisp to participate.

The main theme of the 2012 European Lisp Conference is
"Interoperability: Systems, Libraries, Workflows". Lisp based and
functional-languages based systems have grown a variety of solutions
to become more and more integrated with the wider world of Information
and Communication Technologies in current use. There are several
dimensions to the scope of the solutions proposed, ranging from
"embedding" of interpreters in C-based systems, to the development of
abstractions levels that facilitate the expression of complex context
dependent tasks, to the construction of exchange formats handling
libraries, to the construction of theorem-provers for the "Semantic
Web". The European Lisp Symposium 2012 solicits the submission of
papers with this specific theme in mind, alongside the more
traditional tracks which have appeared in the past editions.

We invite submissions in the following forms:

Papers: Technical papers of up to 15 pages that describe original
results or explain known ideas in new and elegant ways.

Demonstrations: Abstracts of up to 4 pages for demonstrations of
tools, libraries, and applications.

Tutorials: Abstracts of up to 4 pages for in-depth presentations about
topics of special interest for at least 90 minutes and up to 180
minutes.

Lightning talks: Abstracts of up to one page for talks to last for no
more than 5 minutes.

All submissions should be formatted following the ACM SIGS guidelines
and include ACM classification categories and terms. For more
information on the submission guidelines and the ACM keywords, see:
http://www.acm.org/sigs/publications/proceedings-templates and
http://www.acm.org/about/class/1998.

Important dates:

February 15th 2012: submission deadline (extended deadline)
March 7th 2012: acceptance results

April 30th 2012: Conference opens

Program Commitee.
Chair:
Marco Antoniotti, Università degli Studi di Milano Bicocca, Milan, ITALY

Local organizers:
Damir Cavar, Eastern Michigan University
Franjo Pehar, University of Zadar
Damir Kero, University of Zadar

Members:
Giuseppe Attardi, Università degli Studi di Pisa, Pisa, ITALY
Pascal Costanza, Intel, Bruxelles, BELGIUM
Marc Feeley, Université de Montreal, Montreal, CANADA
Scott McKay, Google, U.S.A.
Kent Pitman, U.S.A.
Christophe Rhodes, Department of Computing, Goldsmiths, University of London, London, UNITED KINGDOM
Robert Strandh, LABRI, Université de Bordeaux, Bordaux, FRANCE
Didier Verna, EPITA / LRDE, FRANCE
Taiichi Yuasa, Kyoto University, JAPAN

--
Marco Antoniotti

ELS2012 Zadar, Croatia, Call for Papers

Marco Antoniotti — 2012-01-23T11:59:39

Apologies for the multiple postings...

===========================================================================

European Lisp Symposium 2012, Zadar, Croatia, April 30th - May 1st, 2012
http://european-lisp-symposium.org

The purpose of the European Lisp Symposium is to provide a forum for
the discussion and dissemination of all aspects of design,
implementation and application of any of the Lisp and Lisp-inspired
dialects, including Common Lisp, Scheme, Emacs Lisp, AutoLisp, ISLISP,
Dylan, Clojure, ACL2, ECMAScript, Racket, SKILL, and so on. We
encourage everyone interested in Lisp to participate.


The main theme of the 2012 European Lisp Conference is
"Interoperabilty: Systems, Libraries, Workflows".  Lisp based and
functional-languages based systems have grown a variety of solutions
to become more and more integrated with the wider world of Information
and Communication Technologies in current use.  There are several
dimensions to the scope of the solutions proposed, ranging from
"embedding" of interpreters in C-based systems, to the development of
abstractions levels that facilitate the expression of complex context
dependent tasks, to the construction of exchange formats handling
libraries, to the construction of theorem-provers for the "Semantic
Web".  The European Lisp Symposium 2012 solicits the submission of
papers with this specific theme in mind, alongside the more
traditional tracks which have appeared in the past editions.

We invite submissions in the following forms:

Papers: Technical papers of up to 15 pages that describe original
results or explain known ideas in new and elegant ways.

Demonstrations: Abstracts of up to 4 pages for demonstrations of
tools, libraries, and applications.

Tutorials: Abstracts of up to 4 pages for in-depth presentations about
topics of special interest for at least 90 minutes and up to 180
minutes.

Lightning talks: Abstracts of up to one page for talks to last for no
more than 5 minutes.

All submissions should be formatted following the ACM SIGS guidelines
and include ACM classification categories and terms. For more
information on the submission guidelines and the ACM keywords, see:
http://www.acm.org/sigs/publications/proceedings-templates and
http://www.acm.org/about/class/1998.


Important dates:

Jan 31st 2012: submission deadline
Feb 21st 2012: acceptance results

April 30th, 2012 Conference opens


Program Commitee.
Chair:
Marco Antoniotti, Università degli Studi di Milano Bicocca, Milan, ITALY

Local organizers:
Damir Ćavar, Eastern Michigan University
Franjo Pehar, University of Zadar
Damir Kero, University of Zadar

Members:
Giuseppe Attardi, Università degli Studi di Pisa, Pisa, ITALY
Pascal Costanza, Intel, Bruxelles, BELGIUM
Marc Feeley, Université de Montreal, Montreal, CANADA
Scott McKay, Google, U.S.A.
Kent Pitman, U.S.A.
Christophe Rhodes, Department of Computing, Goldsmiths, University of London, London, UNITED KINGDOM
Robert Strandh, LABRI, Université de Bordeaux, Bordaux, FRANCE
Didier Verna, EPITA / LRDE, FRANCE
Taiichi Yuasa, Kyoto University, JAPAN




_______________________________________________
cells-devel site list
cells-devel< at >common-lisp.net
http://common-lisp.net/mailman/listinfo/cells-devel

[ELS 2012] European Lisp Symposium 2012, Zadar,Croatia; call for papers

Marco Antoniotti — 2011-11-17T16:03:44

Apologies for the multiple postings....

================================================================
European Lisp Symposium 2012, Zadar, Croatia, April 30th - May 1st, 2012
http://european-lisp-symposium.org

The purpose of the European Lisp Symposium is to provide a forum for
the discussion and dissemination of all aspects of design,
implementation and application of any of the Lisp and Lisp-inspired
dialects, including Common Lisp, Scheme, Emacs Lisp, AutoLisp, ISLISP,
Dylan, Clojure, ACL2, ECMAScript, Racket, SKILL, and so on. We
encourage everyone interested in Lisp to participate.


The main theme of the 2012 European Lisp Conference is
"Interoperabilty: Systems, Libraries, Workflows".  Lisp based and
functional-languages based systems have grown a variety of solutions
to become more and more integrated with the wider world of Information
and Communication Technologies in current use.  There are several
dimensions to the scope of the solutions proposed, ranging from
"embedding" of interpreters in C-based systems, to the development of
abstractions levels that facilitate the expression of complex context
dependent tasks, to the construction of exchange formats handling
libraries, to the construction of theorem-provers for the "Semantic
Web".  The European Lisp Symposium 2012 solicits the submission of
papers with this specific theme in mind, alongside the more
traditional tracks which have appeared in the past editions.

We invite submissions in the following forms:

Papers: Technical papers of up to 15 pages that describe original
results or explain known ideas in new and elegant ways.

Demonstrations: Abstracts of up to 4 pages for demonstrations of
tools, libraries, and applications.

Tutorials: Abstracts of up to 4 pages for in-depth presentations about
topics of special interest for at least 90 minutes and up to 180
minutes.

Lightning talks: Abstracts of up to one page for talks to last for no
more than 5 minutes.

All submissions should be formatted following the ACM SIGS guidelines
and include ACM classification categories and terms. For more
information on the submission guidelines and the ACM keywords, see:
http://www.acm.org/sigs/publications/proceedings-templates and
http://www.acm.org/about/class/1998.


Important dates:

Jan 31st 2012: submission deadline
Feb 21st 2012: acceptance results

April 30th, 2012 Conference opens

Program Commitee.

Chair:
Marco Antoniotti, Università degli Studi di Milano Bicocca, Milan, ITALY

Local organizers:
• Damir Ćavar, Eastern Michigan University
• Franjo Pehar, University of Zadar
• Damir Kero, University of Zadar

Members:
• Giuseppe Attardi, Università degli Studi di Pisa, Pisa, ITALY
• Pascal Costanza, Intel, Bruxelles, BELGIUM
• Marc Feeley, Université de Montreal, Montreal, CANADA
• Scott McKay, Google, U.S.A.
• Kent Pitman, Hypermeta, U.S.A.
• Christophe Rhodes, Department of Computing, Goldsmiths, University of London, London, UNITED KINGDOM
• Robert Strandh, LABRI, Université de Bordeaux, Bordaux, FRANCE
• Didier Verna, EPITA / LRDE, FRANCE



--
Marco Antoniotti

Is this project still alive?

Bart Demeyer — 2011-04-20T11:17:44

Hello,

There seems to be no recent traffic in this ML.
Has the project moved somewhere else or has been declared dead?

Thx.

Error: Attempt to take the value of the unboundvariable `MD-SLOT-CELL'

Frank Goenninger — 2010-07-26T08:23:04

Hi -

just downloaded newest Cells repo from github.

Using AllegroCL 8.2 Express Edition on Windows 7 I get the error mentioned in the subject. I haven't looked into it, but strangely enough, I do get this from both Ramarren's and Kenny's repos.

Any ideas ?

Thx!

Cheers
  Frank

I almost forgot the most important audience...

Kenneth Tilton — 2010-04-10T01:18:38

http://github.com/kennytilton

The mailing list stays here and will be used for all projects.

The goal is uncertain. Either or both of:

    Cello for the Mac (and even Linux)

    qooxdoo+cells

I will at least get the code for Cello and its subprojects onto github 
and accept patches that move them forward. I am more interested in the 
qooxdoo project, but if Cello et all go well I'll see that thru first.

kt

which is the correct cells distro?

Mirko Vukovic — 2010-03-26T17:45:57

Hello group,

Before diving into cells, I want to make sure I have the latest stable
release.  I will run cells on sbcl & clisp to control the flow of some
numerical calculations (I am really not interested in GTK right now).

I have downloaded cells2.0 from cliki.

On the mailing list, I see another branch mentioned (Ramarren).  I
gather that as long as I don't care about GTK, that should not be an
issue.

Am I correct in using cliki's cells2.0?

Thank you,

Mirko

Cells on ABCL

Alessio Stalla — 2010-02-09T09:58:58

Hello,
I'm interested on having Cells running on ABCL. I have downloaded the
latest snapshot from the Ramarren branch and it appears that only a
few read conditionals are missing (for the MOP package) to make Cells
compile and load fine; attached you find the patch.

However, the tests fail due to an issue I had already found the first
time I tried Cells on ABCL (see
http://www.mail-archive.com/cells-devel< at >common-lisp.net/msg00582.html).
The fix for that is apparently simple - replace delete with remove in
c-unlink-used (link.lisp) - but His Kennyness himself said that this
naive fix can have a bad impact on performance, so I have not included
it in my patch. To me, one sensible option would be to enable the
"fix" only on ABCL (it's better to have less than optimal performance
than to have no Cells at all!), but it's a decision that should be
taken by the Cells developers.

Bye,
Alessio Stalla

Cells-devel: allow ECL support

Michael Raskin — 2010-01-29T07:28:18

Hello.
I have some interest in simplifying installation of Cells-GTK on as
wide range of platforms as possible (from the "expansive" point-of-view:
I have a perfectly fine installation of Cells-GTK on SBCL on Linux on my
notebook).
The attached patch enables ECL support in Ramarren cells fork. It
actually does nothing except noting that ECL uses :clos package for MOP.
I hope it will be included in master branch somewhen soon..
(cells::test-cells) gives no Cells errors (dribble errors do not count,
right?).

Thanks
Michael Raskin
diff -U3 -r Ramarren-cells-beb09a0/cells.asd /home/raskin/.sbcl/site/Ramarren-cells-beb09a0/cells.asd
--- Ramarren-cells-beb09a0/cells.asd2010-01-29 09:49:41.000000000 +0300
+++ /home/raskin/.sbcl/site/Ramarren-cells-beb09a0/cells.asd2010-01-20 20:20:11.000000000 +0300
< at >< at > -1,6 +1,6 < at >< at >
 ;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10 -*-
 
-#+(or allegro lispworks cmu mcl ccl clisp cormanlisp sbcl scl ecl)
+#+(or allegro lispworks cmu mcl ccl clisp cormanlisp sbcl scl)
 (progn
 (declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
 
diff -U3 -r Ramarren-cells-beb09a0/defpackage.lisp /home/raskin/.sbcl/site/Ramarren-cells-beb09a0/defpackage.lisp
--- Ramarren-cells-beb09a0/defpackage.lisp2010-01-29 09:51:58.000000000 +0300
+++ /home/raskin/.sbcl/site/Ramarren-cells-beb09a0/defpackage.lisp2010-01-20 20:20:11.000000000 +0300
< at >< at > -33,9 +33,8 < at >< at >
    #+lispworks #:clos
    #+sbcl #:sb-mop
    #+(or ccl mcl) #:ccl
-   #+ecl #:clos
    
-   #-(or allegro clisp cmu cormanlisp lispworks mcl ccl sbcl ecl)
+   #-(or allegro clisp cmu cormanlisp lispworks mcl ccl sbcl)
    #.(cerror "Provide a package name."
        "Don't know how to find the MOP package for this Lisp.")
    
diff -U3 -r Ramarren-cells-beb09a0/utils-kt/defpackage.lisp /home/raskin/.sbcl/site/Ramarren-cells-beb09a0/utils-kt/defpackage.lisp
--- Ramarren-cells-beb09a0/utils-kt/defpackage.lisp2010-01-29 09:52:42.000000000 +0300
+++ /home/raskin/.sbcl/site/Ramarren-cells-beb09a0/utils-kt/defpackage.lisp2010-01-20 20:20:11.000000000 +0300
< at >< at > -36,7 +36,7 < at >< at >
 (defpackage :utils-kt
   (:nicknames #:ukt)
   (:use #:common-lisp
-    #+(or allegro lispworks clisp ecl) #:clos
+    #+(or allegro lispworks clisp) #:clos
     #+cmu  #:mop
     #+sbcl #:sb-mop
     #+openmcl-partial-mop #:openmcl-mop
diff -U3 -r Ramarren-cells-beb09a0/utils-kt.asd /home/raskin/.sbcl/site/Ramarren-cells-beb09a0/utils-kt.asd
--- Ramarren-cells-beb09a0/utils-kt.asd2010-01-29 09:49:55.000000000 +0300
+++ /home/raskin/.sbcl/site/Ramarren-cells-beb09a0/utils-kt.asd2010-01-20 20:20:11.000000000 +0300
< at >< at > -6,7 +6,7 < at >< at >
 ;;;(operate 'load-op :asdf-aclproj)
 ;;;(use-package :asdf-aclproj)
 
-#+(or allegro lispworks cmu mcl ccl clisp cormanlisp sbcl scl ecl)
+#+(or allegro lispworks cmu mcl ccl clisp cormanlisp sbcl scl)
 
 (asdf:defsystem :utils-kt
   :name "utils-kt"

Scrollable celtk widgets

Andy Chambers — 2009-12-19T20:58:55

One annoying limitation of tk widgets is that only text and canvas
support the commands required for
scrollbars.  So I made the `mk-scrollee' macro.  Used in conjunction
with a new type of canvas item
I created `window-item', we can wrap any tk window in a canvas so that
it can be scrolled.

I tried making :scroll-region a rule where the dimensions are derived
from the wrapped window but got
an assertion error in tk-create-event-handler-ex.  Is that because
it's trying to get the dimensions of a
widget that's not been created yet?  How could I get around this?

As always, feel free to import this stuff into celtk/cello if you want.

Cheers,
Andy

(deftk window-item (item)
  ()
  (:tk-spec window
   -anchor
   -height
   -width
   -state
   -tags
   -window
   ))

(defmacro mk-scrollee ((&key (height 500)
     (width 500)) &body body)
  "wraps any tk window inside a canvas so that it can be scrolled"
  `(make-kid 'canvas
    :scroll-region (list 0 0 ,width ,height)
    :gridding "-row 0 -column 0 -sticky news"
    :kids (c? (the-kids
       ,< at >body
       (mk-window-item
:coords (list 0 0)
:window (c? (path (kid1 .parent)))
:anchor 'nw
:height (c? (height (kid1 .parent)))
:width (c? (width (kid1 .parent))))))))

;;; Usage
(run-celtk-window 'window
  :kids (c? (the-kids
  (mk-scroller
   :packing (c?pack-self "-side top -fill both -expand 1")
   :canvas (c? (mk-scrollee (:height 1000
                             :width 500)
 (mk-stack ()
   (loop for i from 0 to 30
      collect (mk-label :text (format nil "hi ~a" i))))))))))

Great idea!

Kenneth Tilton — 2009-10-31T15:37:45

http://coherence-lang.org/Onward09.pdf

(thx to Paul Tarvydas for the heads up)

Edwards acknowledges Trellis as a temporal predecessor tho he was 
unaware of it. Mentions Garnet, too. FRP, too.

Not sure I like re-running rules to achieve correctness, tho it would be 
nice not having to record dependencies.

Worth noting: not yet implemented.

kt

mk-row / mk-stack

Andy Chambers — 2009-10-24T13:27:39

Plaese find below an alternative version of def-mk-inline which means
that if the
"title" of a row or stack is nil, an unlabelled frame will be created.

I modified this because I kept feeling like I was repeating myself
with code like
this.....

(bif (title (maybe-get-title))
  (mk-row (title)
     ....)
  (mk-row ()
     ....))

With the definition below, I don't have to repeat myself.

(mk-row ((maybe-get-title))
    ...)

What do you guys think?

(defmacro def-mk-inline (name (unlabelled labelled))
  `(defmacro ,name ((&rest initargs) &rest kids)
    (cond
      ((evenp (length initargs))
       `(make-instance ',',unlabelled
 :fm-parent *parent*
 ,< at >initargs
 :kids (c? (the-kids ,< at >kids))))
      ((null (car initargs))
       `(make-instance ',',unlabelled
 :fm-parent *parent*
 ,< at >(cdr initargs)
 :kids (c? (the-kids ,< at >kids))))
      (t `(make-instance ',',labelled
   :fm-parent *parent*
   :text ,(car initargs)
   ,< at >(cdr initargs)
   :kids (c? (the-kids ,< at >kids)))))))

bug in celtk

Andy Chambers — 2009-08-14T13:52:26

Hey All,

There seems to be a strange bug in celtk.  I'm looking into it but
wondered if any of you guys had any clues.

Celtk seems to be delaying the evaluation of an "on-command" procedure
until the next "on-command" event
is generated.  You can see this in the example ltktest-ci.  If you
start that, and click the "Hallo" button, then
the "Wald" button, then the "Hallo" button, you'll see what I'm talking about.

I've made a few changes to my local copy so it might just be me but it
would be interesting to find out if
anyone else can confirm this behaviour.

Cheers,
Andy