- munich-lisp - mailman3.common-lisp.net

[munich-lisp] lisp in the bier garten
by Jim Newton 10 Jul '06

10 Jul '06

hey, do any of the munich lispers wanna meet during the summer? How about meeting at the same bier garten we met at before? Anyone interested? Should we wait until after the world cup is over? -jim

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[munich-lisp] Pico Lisp beats DB2 and Oracle!
by Alexander Burger 20 Jun '06

20 Jun '06

Hi Munich-Lisp Group, Pico Lisp made the second place in the DB-Contest of c't magzine (c't 13/06, pp. 190)! ... And got an extra medal for the "most original and surprising program" :-) Cheers, - Alex

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[munich-lisp] dynamical vs. lexical scoping in #scheme
by Andreas Hauser 31 Mar '06

31 Mar '06

Hoi, later this day (friday) we want to discuss dynamical vs. lexical scoping in #scheme on freenode. Abu it would be very cool if you could join in. Others might also be interested. -- Andy

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[munich-lisp] Job Opening in Munich for Lisp Programmer
by Jim Newton 17 Mar '06

17 Mar '06

Cadence Design Systems GmbH in Munich, Germany ( www.cadence.com and www.cadence.com/vcad) has a job opening in the VCAD organization for an experienced software developer. It would be great to fill the position with someone who has good Lisp experience. Virtual CAD (VCAD) is a group within Cadence providing EDA (Electronic Design Automation) related services. The job is with the software development group within VCAD. Cadence's software products are scripted with the SKILL language, a Lisp language with two dialects: one Franz Lisp-like dialect, and one Scheme-like dialect. The VCAD software group also uses Common Lisp where appropriate. The position would be working in a small software group within an IC design services group. Tasks are usually related to IC design automation but not exclusively. Other current projects include release management, resource scheduling/tracking, Object-system implementation, regression/system/unit testing flow development. We are looking for someone who either has experience programming in a Lisp language, or is interested in learning Lisp in a production environment, and is comfortable in several mutually unrelated programming languages (eg, C, Smalltalk, and PostScript; or Java, Prolog, and SPARC assembly language). Experience in Perl, Python, C++, TCL, Java and Ample are useful but to a lesser extent. Experience with UNIX applications such as mySQL and Postgres would also be good. The platform is 99% UNIX based, including mostly Linux and Solaris. Other things that would be nice, but are not required: some theoretical familiarity with relational databases (eg, you took a database class or read the textbook from one); Windows programming experience; Oracle experience. Fluency in English is required. Also useful would be familiarity with German, French, Italian, Russian, or Hebrew. Relocation to Munich would be required. If you are interested, please respond to jimka(a)cadence.com. Several of my colleagues and I also plan to attend and present at the European Common Lisp Meeting in Hamburg, April 29/30. If you are interested in finding out more, please contact one of us. Thanks and happy consing, Jim Newton -- +------------------------------------------------------------------------+ | Jim E. Newton (jimka(a)cadence.com) desk +49-(0)89-4563-1918 | | Methodology Services Europe fax +49-(0)89-4563-1819 | | Cadence Design Systems GmbH Munich Germany | | | | If you won't do it in the rain, you won't do it. | +------------------------------------------------------------------------+

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[munich-lisp] LISP software developer position available in munich
by Jim Newton 16 Mar '06

16 Mar '06

Hi everyone, Cadence Design Systems in Feldkirchen has a position for a Sofware Developer available which we hope to fill April, May, or June of this year. The job is for a permanant position, working in a very dynamic (code word for chaotic) environment. Someone who enjoys Lisp programming would probably enjoy the job very much. Other software development experience is a definite advantage as well as experience with UNIX, database, electronic design automation, formal verification. Those who enjoy very strong coffee should especially note a great opportunity (grins). If you'd like to find out more, please contact me at jimka(a)cadence.com. I'll be able to give a more accurate job description soon. Sincerely Jim Newton -- +------------------------------------------------------------------------+ | Jim E. Newton (jimka(a)cadence.com) desk +49-(0)89-4563-1918 | | Methodology Services Europe fax +49-(0)89-4563-1819 | | Cadence Design Systems GmbH Munich Germany | | | | If you won't do it in the rain, you won't do it. | +------------------------------------------------------------------------+

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[munich-lisp] Links: Modular Verification etc.
by Axel Rauschmayer 13 Sep '05

13 Sep '05

- "Modular verification of collaboration-based software designs", Kathi Fisler, Shriram Krishnamurthi http://portal.acm.org/citation.cfm?id=503231 - MultiJava: Multiple dispatch for Java from Gary Leavens et al. If you want to look at multiple dispatch from a slightly different angle. - A partial (I'm only a co-author) plug for my own work: it describes nicely the various implications of layer-based programming. "Scaling Step-Wise Refinement", Don Batory, Jack Sarvela, Axel Rauschmayer http://www.pst.ifi.lmu.de/~rauschma/publications.html#ahead2 Greetings, Axel -- Axel Rauschmayer http://rauschma.de axel(a)rauschma.de

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[munich-lisp] Another new member
by Axel Rauschmayer 13 Sep '05

13 Sep '05

Hi! Last time was also my first Munich Lisp meeting. My name is Axel Rauschmayer, I'm a research assistant at the dept. of computer science at the University of Munich. I'm currently writing a scripting language that is loosely centered around the following ideas: - Direct RDF support (obviating the need for complex object to {RDBS, XML, RDF} mappings). - RDF-based improved structuring of programs ("next-generation literate programming" if you will). - Solutions for some of the separation of concerns difficulties arising in GUI programming. - Multiple dispatch. The last item, as you might have guessed, is the reason for my interest in Lisp. Greetings, Axel -- Axel Rauschmayer http://rauschma.de axel(a)rauschma.de

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[munich-lisp] multimethods, generic functions, multiple dispatch, ...
by Christian Schuhegger 11 Sep '05

11 Sep '05

hi, yesterday in the beer garden there was a discussion going on where i tried to explain the advantage of generic functions over the way that java or c++ implement their runtime type polymorphism on only one argument, the implicite 'this' argument. the example choosen to show the problems with only single method dispatching was the collission of two 2 dimensional shapes, e.g. triangle, circle, square, rectangle, ellipse, ... in java the 'best' way to achieve double dispatch is probably some variation of the visitor pattern, something along the lines: class Triangle implements Shape { public boolean collidesWith(Shape other) { other.collidesWithTriangle(this); } ...; public boolean collidesWithCircle(Circle s) {...;} public boolean collidesWithSquare(Square s) {...;} ...; } you avoid the if-then-elses, but if you add a shape later you will have to touch all sublasses of Shape and add the collidesWithNewShape method. because collission detection is symmetric, e.g. it does not matter if you say collidesWith(Triangle t, Circle c) or collidesWith(Circle c, Triangle t) it is not obvious if the actual code that does the collision detection between these two shapes should be in the Triangle or in the Circle class. probably it is best factored out in a third CollisionDetectionAlgorithm class which only contains static methods for each combination of shapes. as you can see you have to be already quite imaginative to implement double type dispatch and it will become even more complex with more than two types on which you would like to dispatch. you avoid the problem completely by using multimethods, e.g. CLOS in lisp or language extensions like NICE for java: http://nice.sourceforge.net/ i've also seen some time ago an extension to gcc that allows you to use multimethods in C++, but i cannot find it at the moment. there are two related documents that i found by quickly browsing through some google results: http://www.cs.technion.ac.il/~imaman/stuff/mm.ppt https://www.informit.com/content/images/0201704315/samplechapter/alexan11.p… -- Christian Schuhegger http://www.el-chef.de/

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[munich-lisp] new member
by Emilio Lopes 11 Sep '05

11 Sep '05

Hello, Munich Lispers! I attended the last meeting on friday for the first time. I already had the chance to talk to some of you at the biergarten, but I would like to introduce myself to the list nonetheless. I'm the guy who speaks German with a funny and English with a terrible accent ;-). But seriously: I'm an ex-physicist who at some point realised that physics was not really his business and that programming is the real fun. I've been since then catching up and learning a lot of interesting CS things. Since 2003 I'm working for an automobile maker in Munich. The job is a mix of programming and system administration, but it's unfortunately a Lisp-free zone. My interest in Lisp began with Emacs, which I use since 1993. Probably due to some posting from Erik Naggum on one of the Emacs newsgroups, I got interested in Common Lisp and started playing with CMUCL and later SBCL. Most of my free time currently goes into following and contributing to the GNU Emacs development. Also, I've been programming in Scheme since about one year. Because I was always fascinated by CLOS and specially the MOP, I've adapted Gregor Kiczales' Tiny-CLOS to my preferred Scheme implementation, Scheme 48. I found it amazing that one can build CLOS with a MOP just by using lambdas and lexical scope! Oh, and I also enjoy riding my road bike a lot :-). Well, I guess it's enough for now. I'm sure we'll have chance to talk more at future meetings. I'm really looking forward to the next one! Emilio P.S.: My personal home page (not much there though): http://home.tiscali.de/emilio.lopes/ My home page at the Emacs Wiki (some personal blurb): http://www.emacswiki.org/cgi-bin/wiki/EmilioLopes My bookmarks at del.icio.us: http://del.icio.us/eclig

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[munich-lisp] context handling via CLOS and (eql form)
by Christian Schuhegger 10 Sep '05

10 Sep '05

hi, here is a quick dummy example of what i intended to explain yesterday about handling context by explicitely threading a context parameter through your application: -- start -- (defun test () (let ((context '((condition-1 . yes)(condition-2 . no)(condition-3 . perhaps)))) (function-example-1 context 1 2))) (defun function-example-1 (context other-arg-1 other-arg-2) (let ((condition-1 (cdr (assoc 'condition-1 context))) (condition-2 (cdr (assoc 'condition-2 context)))) (function-example-1-with-context condition-1 condition-2 other-arg-1 other-arg-2))) (defmethod function-example-1-with-context (condition-1 condition-2 other-arg-1 other-arg-2) (declare (ignorable condition-1 conditon-2 other-arg-1 other-arg-2)) (error "not implemented context")) (defmethod function-example-1-with-context ((condition-1 (eql 'yes)) (condition-2 (eql 'no)) other-arg-1 other-arg-2) (declare (ignorable condition-1 conditon-2)) (format t "c1: yes c2: no arg1: ~A arg2: ~A~%" other-arg-1 other-arg-2)) (defmethod function-example-1-with-context ((condition-1 (eql 'yes)) (condition-2 (eql 'yes)) other-arg-1 other-arg-2) (declare (ignorable condition-1 conditon-2)) (format t "c1: yes c2: yes arg1: ~A arg2: ~A~%" other-arg-1 other-arg-2)) -- end -- [21]> (test) c1: yes c2: no arg1: 1 arg2: 2 as mentioned yesterday in the presentation often when you look at code that handles context you see a big if-then-else tree. this is very confusing and cannot be easily extended. in the above example you see no single if-then-else and it is additive in the sense that when you would like to add another combination of your predicates (conditions) you just add another defmethod. besides that, normally a program with context uses conditions/predicates to determine its actions. therefore i do not really see why the introduction of the concept 'layer' could help? i may be wrong, but in my current understanding a layer is just a name for a certain predicate combination, e.g. layer-1 := condition-1 == yes && condition-2 == no as you also see above with condition-3 (which is actually not used :) ) a predicate does not have to be binary, e.g. it is not restricted to the only values true and false. you can have even enumerated predicates like for example certain categories of screen size 'small := width 40 characters 'medium := width 80 characters 'big := width 120 characters 'large := more than 140 characters .... i decided to use an explicite parameter to the method called context and not a 'special' variable with dynamic scope. this has the disadvantage that you have to write the parameter in a lot of places (this is a one time disadvantage when you write the code), but it has the advantage that every function/method can be easily tested, because you explicitely hand in the context. i originally used the above technique in an embedded language (lisp plc programming environment : LPPE) where i had to output different 'machine code' instructions depending on the target hardware (not really but you can imagine it as: i386, ARM, alpha, ...) and depending on the element in the abstract syntax tree. therefore the methods take two (eql form) parameters, one is the target hardware type and one is the type of the AST-node. -- Christian Schuhegger http://www.el-chef.de/

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[munich-lisp] Munich Lisp Meeting
by tfb＠ocf.berkeley.edu 08 Sep '05

08 Sep '05

------- Start of forwarded message ------- From: Peter Herth <p.herth(a)t-online.de> Newsgroups: comp.lang.lisp Subject: Munich Lisp Meeting Date: Thu, 08 Sep 2005 08:45:05 +0200 Organization: T-Online Message-ID: <dfomli$8qu$01$1(a)news.t-online.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi, tomorrow, the 9.9, there will be a meeting of the Munich Lisp Group. As a special guest, Pascal Costanza will join us and talk about: "Language Constructs for Context-oriented Programming". The meeting will take place at 18.00 at the LMU, Oettingenstr. 67 Room Takla-Makan Z11 Main Entrance, downstairs, through the room opposite to the toilets. Downstairs: ____________________________________ | | | | | Z9 | Z10 | Z11 | | | | | |____/ __|____/ ___|______/ _________|___ | |________/ __________________________ | | | | | Z8 | ------ -------| | Z7 | | | |_____/ ________| | | -----------| |----------------- ___________ _ _________ |/ /| Stairs | |WC | |||| | ------------------------- Entrance Level: -------------------------------- _______/ _____ _______ | | | Stairs | | | | |||| | -------/ -------------------- | | ^ Main Entrance Peter -- pet project: http://dawn.netcologne.de homepage: http://www.peter-herth.de lisp stuff: http://www.peter-herth.de/lisp.html get Ltk here: http://www.peter-herth.de/ltk/ ------- End of forwarded message -------

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RE: [munich-lisp] Meeting
by Christian Schaller 06 Sep '05

06 Sep '05

Will there be an update on http://wiki.alu.org/Munich, especially regarding the agenda? I'm going to invite a friend... :) Looking forward to meet you all again! - Chris > -----Original Message----- > From: munich-lisp-bounces(a)common-lisp.net > [mailto:munich-lisp-bounces@common-lisp.net] On Behalf Of Peter Herth > Sent: Friday, September 02, 2005 2:11 PM > To: munich-lisp(a)common-lisp.net > Subject: Re: [munich-lisp] Meeting > > I just confirmed the 9.9.05 with Pascal, he will be coming and hold a > presentation. > > Peter > _______________________________________________ > http://lisp.tech.coop/Munich > munich-lisp mailing list > munich-lisp(a)common-lisp.net > http://common-lisp.net/cgi-bin/mailman/listinfo/munich-lisp >

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[munich-lisp] Meeting
by Peter Herth 02 Sep '05

02 Sep '05

Hi, I have talked to Pascal Costanza, and he offered to come to Munich and give a presentation of his works. So this would be the ideal reason to schedule a Lisp users meeting :). The planned date would be friday the 9th. Could we meet at the university, Wolfgang? Peter

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[munich-lisp] The Next Meeting: koelsch and lisp
by Jim Newton 23 Jun '05

23 Jun '05

Hi everyone, i've made some reservations at Coellner im Paragraph Biergarten for 01 July 2005. It looks like a fun place, sort of small and cozy. The reservations are under the name NEWTON. Check out the web page http://lisp.tech.coop/Munich for more details. Would anyone like to bring his laptop and show off some of the cool stuff you are working on? I'll bring mine as well in case anyone wants to see a predicate dispatch implementation or a 3-d graphics game based on LTK. If you don't mind, please send mail to the list if you would like to attend. Thanks. -jim

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[munich-lisp] lisp in the biergarten
by Jim Newton 17 Jun '05

17 Jun '05

hi, would anyone be interested in meeting on july 1st at the Koelner Biergarten. It is a small biergarten where you can drink koelsch. The great thing about Koelsch is that if you do not like it there is only 0.2 liters per glass to drink :-) The restaraunt/biergarten is near the corner of Winzerstrasse and Herzogstrasse. That is just off Hohenzollernstrasse around the corner from Nordbad. How does this suggestion sound? -jim

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[munich-lisp] next meeting of munich lisp users group
by Jim Newton 28 May '05

28 May '05

please visit the site and vote for your suggested time for the next meeting. -jim http://lisp.tech.coop/Munich

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[munich-lisp] 27may05
by Alexander Burger 28 May '05

28 May '05

... it's been a pretty boring meeting ... - Alex

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RE: [munich-lisp] Next meeting
by Christian Schaller 07 Apr '05

07 Apr '05

Lispers, Sorry, didn't get the whole thread regarding the next meeting. Could anybody please be so kind and provide some summary like a date ;-) ? - Chris > -----Original Message----- > From: munich-lisp-bounces(a)common-lisp.net > [mailto:munich-lisp-bounces@common-lisp.net] On Behalf Of > Alexander Burger > Sent: Thursday, April 07, 2005 2:12 PM > To: munich-lisp(a)common-lisp.net > Subject: Re: [munich-lisp] Next meeting > > On Tue, Apr 05, 2005 at 05:04:24AM -0000, Andreas Hauser wrote: > > Then let's just meet at 5, for talking etc., > > but start with presentations at 6. > > Ok. I'll be there around half past five. > > - Alex > _______________________________________________ > http://lisp.tech.coop/Munich > munich-lisp mailing list > munich-lisp(a)common-lisp.net > http://common-lisp.net/cgi-bin/mailman/listinfo/munich-lisp >

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[munich-lisp] Next meeting
by Wolfgang Mederle 07 Apr '05

07 Apr '05

Hi, I reserved the same room as last time, 1.14 in LMU building Oettingenstraße. Time frame is 17.00-22.00, so we could start at 5 or 6 p.m., we should just agree on a time, unlike last time. :-) Wolfgang -- Wolfgang Mederle wolfgang.mederle(a)stud.uni-muenchen.de * GPG key id E8EF7E7F <URL:http://www.mederle.de/> ICQ# 1435333 * AIM therealmadearl

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[munich-lisp] Next meeting
by Wolfgang Mederle 04 Apr '05

04 Apr '05

Hi, I reserved the same room as last time, 1.14 in LMU building Oettingenstraße. Time frame is 17.00-22.00, so we could start at 5 or 6 p.m., we should just agree on a time, unlike last time. :-) Wolfgang -- Wolfgang Mederle madearl(a)mac.com * GPG key id D30386AE <URL:http://www.mederle.de/> ICQ# 1435333 * AIM therealmadearl

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[munich-lisp] Next Meeting
by Alexander Burger 01 Apr '05

01 Apr '05

Hi all, I'm not sure how we decided about the schedule for the next meeting (April the 8th). Perhaps I didn't hear it as everybody was about to leave, or perhaps I forgot it ... In any case I'd like to ask Jim: How about an introduction to Skill? Cheers, - Alex

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[munich-lisp] MLUG meeting
by Wolfgang Mederle 11 Feb '05

11 Feb '05

Listers, Lispers, I have an official reservation for our meeting room now. It's going to be room 1.05, reserved from 17:00-22:00. We have a projector (1024x768) and should also have internet access. You get to the room by entering the building at the main entrance (aisle has map), turning right, going up, turning right again and walking along until you see the number on the right. I'd like to advertise the meeting to our students. What are you planning to show/discuss? Regards, Wolfgang -- Wolfgang Mederle wolfgang.mederle(a)stud.uni-muenchen.de * GPG key id E8EF7E7F <URL:http://www.mederle.de/> ICQ# 1435333 * AIM therealmadearl

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[munich-lisp] [Fwd: European Common Lisp Meeting, Amsterdam, April 2005]
by Jim Newton 11 Feb '05

11 Feb '05

-------- Original Message -------- Subject: European Common Lisp Meeting, Amsterdam, April 2005 Date: Fri, 11 Feb 2005 00:10:23 +0100 From: Edi Weitz <edi(a)agharta.de> To: cmucl-help(a)cons.org, cmucl-imp(a)cons.org [Apologies if you get this announcement more than once.] Hi! Arthur Lemmens and I are trying to organize a "European Common Lisp Meeting" and I think we've managed to assemble a quite impressive line-up of speakers. The meeting will be in Amsterdam on April 24, 2005, and here's the list of the fellow Lispers who'll give a talk: - Jans Aasman - Dave Fox - Luke Gorrie - Antonio Menezes Leitao - Christophe Rhodes - Robert Strandh - Espen Vestre All details can be found on this website: <http://weitz.de/meeting> We hope that very many of you will be able to attend this meeting and make it a success. Please, if you consider joining us, use the registration facility that can be found at the website above. We're looking forward to seeing you in Amsterdam in April! Cheers, Edi.

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[munich-lisp] Equipment available?
by Alexander Burger 24 Jan '05

24 Jan '05

Concerning the next (and the following) Lisp meetings: What kind of equipment can we use? Is a beamer available? Or even some PC, connected to the internet? Or do we just have a whiteboard? Depending on that I would like to plan my presentation. I could bring an old laptop, but I don't have a beamer. Cheese, - Alex Alexander Burger Software Lab. / 7fach GmbH Bahnhofstr. 24a, D-86462 Langweid abu(a)software-lab.de, http://www.software-lab.de, +49 821 9907090

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[munich-lisp] new web site for munich-lisp
by Jim Newton 22 Jan '05

22 Jan '05

Please notice that the munich-lisp web page has moved to http://lisp.tech.coop/Munich -jim -- +------------------------------------------------------------------+ | jimka(a)agora.rdrop.com __ http://agora.rdrop.com/~jimka | +----------------------------\/------------------------------------+ | Prejudice always masquerades as rationality until it is exposed. | +------------------------------------------------------------------+ | None of us is truly free until all of us are free, with all our | | rights intact and guaranteed, including the basic right to live | | without threat or harassment. [PLAGAL] | +------------------------------------------------------------------+

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