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345 discussions

Macro system
by Alexandre Rademaker 27 Nov '18

27 Nov '18

In the LoL book we learn the flexibility of the Common Lisp macro system. Reading now http://blog.racket-lang.org/2011/04/writing-syntax-case-macros.html It seems that the Racket macros do not necessarily impose constraints to the programmers. But I never really used it. Does anyone here have experiences with both approaches, sufficient to give insights about the good and bad of each one? Alexandre Rademaker Sent from my iPhone

2 2

Common wisdom on arithmetic (IEEE)
by Antoniotti Marco 05 Nov '18

05 Nov '18

Dear all I am fooling around (again!) with the spec of a math library that I want the students to work on as a project. Language is Common Lisp. Essentially the library is an extended generic math library built on the basis of the many ones floating around. Now. Here comes IEEE. And “infinity" Among many implementations there is more or less a consensus about how to “represent” IEEE infinities in CL. E.g. LW > math:long-float-positive-infinity +1D++0 #| +1D++0 is double-float plus-infinity |# CCL ? math:long-float-positive-infinity 1D++0 and so on. NaN is not as clearly defined. LW 45 > math:nan 1D+-0 #| 1D+-0 is double-float not-a-number |# CCL ? math:nan 1D+-0 #| not-a-number |# But to get a NaN in SBCL/CMUCL requires a trick. I use (sb-kernel:make-double-float -524288 0)) ; Courtesy of Raymond Toy. In any case… There are two issues that I would like to brainstorm a bit. The first one pertains rounding modes. Give the current state of affairs, it does not seem possible to access them in all the CL implementations. CMUCL/SBCL give you the necessary hooks, but LW doesn’t. Let’s skip this. The second is just a simple question. Given that we *do* have (with some acrobatics) access to IEEE infinities, would you add symbolic constants to such library like (defconstant +posinf+ ‘+posinf+) or would you just rely on the IEEE infinities? Generic functions like (defgeneric plus (x y) …) Will obviously be affected. I just want to get a feeling about the overall wisdom of this crowd. All the best Marco -- Marco Antoniotti

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[CfP] 12th European Lisp Symposium, April 1-2 2019, Genova, Italy
by Didier Verna 31 Oct '18

31 Oct '18

ELS'19 - 12th European Lisp Symposium Hotel Bristol Palace Genova, Italy April 1-2 2019 In co-location with <Programming> 2019 Sponsored by EPITA http://www.european-lisp-symposium.org/2019/ 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, Hop and so on. We encourage everyone interested in Lisp to participate. The 12th European Lisp Symposium invites high quality papers about novel research results, insights and lessons learned from practical applications and educational perspectives. We also encourage submissions about known ideas as long as they are presented in a new setting and/or in a highly elegant way. Topics include but are not limited to: - Context-, aspect-, domain-oriented and generative programming - Macro-, reflective-, meta- and/or rule-based development approaches - Language design and implementation - Language integration, inter-operation and deployment - Development methodologies, support and environments - Educational approaches and perspectives - Experience reports and case studies We invite submissions in the following forms: Papers: Technical papers of up to 8 pages that describe original results or explain known ideas in new and elegant ways. Demonstrations: Abstracts of up to 2 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. The symposium will also provide slots for lightning talks, to be registered on-site every day. All submissions should be formatted following the ACM SIGS guidelines and include ACM Computing Classification System 2012 concepts and terms. Submissions should be uploaded to Easy Chair, at the following address: https://www.easychair.org/conferences/?conf=els2019 Note: to help us with the review process please indicate the type of submission by entering either "paper", "demo", or "tutorial" in the Keywords field. Important dates: - 01 Feb 2019 Submission deadline - 01 Mar 2019 Notification of acceptance - 18 Mar 2019 Final papers due - 01-02 Apr 2019 Symposium Programme chair: Nicolas Neuss, FAU Erlangen-Nürnberg, Germany Programme committee: tba Search Keywords: #els2019, ELS 2019, ELS '19, European Lisp Symposium 2019, European Lisp Symposium '19, 12th ELS, 12th European Lisp Symposium, European Lisp Conference 2019, European Lisp Conference '19 -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info

1 0

Common Lisp style: multiple packages in same repo
by Daniel Pezely 28 Aug '18

28 Aug '18

I posted this to Stack Overflow but was hoping for more input. https://stackoverflow.com/questions/51638864/common-lisp-style-multiple-pac… May I get recommendations or links to representative code repositories with good style for multiple related Common Lisp packages, please? For instance, consider a high-level workflow library with accompanying lower-level API, each in its own CL package but same git repo due to synchronized releases. Each system (|*.asd| file) isolates tests and may be invoked using: |(asdf:test-system foo :force t)| Separate systems may be built via |make|, which definitely helps isolate SBCL code-coverage reports. Some users of the library may only want to load the lower-level API. For simplifying dependencies for those using higher-level API, it seems best to keep everything bundled in one repo. Any revision to one library would likely require updating all for the same release. I currently have a single directory tree with a subdirectory for each CL package. There's a top-level |Makefile| plus one in each subdirectory that the library maintain would use. The top-level also contains symbolic links for |.asd| files pointing into relevant subdirectories. (It's a library deeply dependent upon POSIX calls via |uiop-posix|, so it's only applicable on an OS with sym-links.) This seems to be an issue at large considering issue #1 for Quicklisp-docs [0]. Found nothing relevant in Google's CL style guide [1], State of the Common Lisp Ecosystem, 2015 [2], Edi's CL Recipes [3] or Lisp-lang [4]. Browsing repos seem to have quite a mix of styles. * [0] https://github.com/rudolfochrist/quicklisp-docs/issues/1 * [1] https://google.github.io/styleguide/lispguide.xml * [2] https://web.archive.org/web/20160305061250/http://eudoxia.me/article/common… * [3] http://weitz.de/cl-recipes/ * [4] http://lisp-lang.org/learn/writing-libraries but see also their section on Continuous Integration Repo to be fixed: https://gitlab.com/dpezely/cl-mmap (commit a23bd88d of 2018-07-14; release will be tagged when fixed) Thanks, -Daniel

8 16

Paredit-mode in the slime repl
by Alexandre Rademaker 07 Aug '18

07 Aug '18

After the last Emacs upgrade to 26.1, the M-s key bind from paredit-mode is replaced by `Next element matching (regexp)` command in the slime repl buffer. Sorry for the silly question, but how to get M-s mapped to paredit-splice-sexp again? In a lisp file buffer it is working as expected. Best, -- Alexandre Rademaker http://arademaker.github.io

4 5

emacs lisp mode, mailing list?
by Mark H. David 30 Jun '18

30 Jun '18

Is there a mailing list to ask questions and make suggestions and talk about emacs lisp mode for pro Lispers? Would that be here perhaps?

9 17

CDR maintenance
by Pascal Costanza 25 May '18

25 May '18

Hi, The Common Lisp Document Repository (CDR - https://common-lisp.net/project/cdr/) is for all practical purposes currently unmaintained. We have been receiving a few minor requests recently, but don’t have the time anymore to take care of this. Is there somebody else in the community who would like to take over and breathe some new life into this project? Thanks, Pascal -- Pascal Costanza

6 9

[Final CfPart] ELS 2018, April 16-17, Marbella, Spain
by Didier Verna 08 Apr '18

08 Apr '18

ELS'18 - 11th European Lisp Symposium Centro Cultural Cortijo de Miraflores Marbella, Málaga Spain April 16-17 2018 In cooperation with: ACM SIGPLAN Sponsored by RavenPack, Brunner Software GmbH, Franz Inc., LispWorks Ltd., and EPITA http://www.european-lisp-symposium.org/ Recent news: - ELS 2018 is in cooperation with ACM SIGPLAN - Full program now available on the website - Still one week to register! 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, Hop and so on. We encourage everyone interested in Lisp to participate. Keynote speakers: - Vsevolod Domkin -- Lisp in a Startup: the Good, the Bad, and the Ugly - R. Matthew Emerson -- This Old Lisp (a look at Clozure CL) Important dates: - 16-17 Apr 2018 Symposium Programme chair: David Cooper, Genworks Intl., USA Local chairs: Andrew Lawson, Ravenpack, Spain Programme committee: Andy Wingo, Igalia, Spain Christophe Rhodes, Goldsmiths University, UK Christopher Wellons Null Program USA Ernst van Waning, Infometrics.nl, Netherlands Irène Durand, LaBRI, Université de Bordeaux, France Julian Padget, University of Bath, UK Ludovic Courtès, Inria, France Michael Sperber, DeinProgramm, Germany Nicolas Neuss, FAU Erlangen-Nürnberg, Germany Olin Shivers Northeastern University USA Philipp Marek, Austria Robert Strandh, Université de Bordeaux, France Sacha Chua Living an Awesome Life Canada Scott McKay, Future Fuel, USA Search Keywords: #els2018, ELS 2018, ELS '18, European Lisp Symposium 2018, European Lisp Symposium '18, 10th ELS, 10th European Lisp Symposium, European Lisp Conference 2018, European Lisp Conference '18 -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info

1 0

[CfPart] European Lisp Symposium 2018, 16-17 April, Marbella, Spain
by Didier Verna 14 Mar '18

14 Mar '18

ELS'18 - 11th European Lisp Symposium Centro Cultural Cortijo de Miraflores Marbella, Málaga Spain April 16-17 2018 Sponsored by Brunner Software GmbH, Franz Inc., LispWorks Ltd., and EPITA http://www.european-lisp-symposium.org/ Recent news: - Invited speakers announced (see below) - Registration open. Don't miss the March 25 deadline for the early bird discount! 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, Hop and so on. We encourage everyone interested in Lisp to participate. Keynote speakers: - Vsevolod Domkin -- Lisp in a Startup: the Good, the Bad, and the Ugly - R. Matthew Emerson -- This Old Lisp (a look at Clozure CL) Important dates: - 25 Mar 2018 Early registration deadline - 16-17 Apr 2018 Symposium Programme chair: David Cooper, Genworks Intl., USA Local chairs: Andrew Lawson, Ravenpack, Spain Programme committee: Andy Wingo, Igalia, Spain Christophe Rhodes, Goldsmiths University, UK Christopher Wellons Null Program Canada Irène Durand, LaBRI, Université de Bordeaux, France Julian Padget, University of Bath, UK Ludovic Courtès, Inria, France Michael Sperber, DeinProgramm, Germany Nicolas Neuss, FAU Erlangen-Nürnberg, Germany Olin Shivers Northeastern University USA Philipp Marek, Austria Robert Strandh, LaBRI, Université de Bordeaux, France Sacha Chua Living an Awesome Life Canada Scott McKay, Future Fuel, USA Search Keywords: #els2018, ELS 2018, ELS '18, European Lisp Symposium 2018, European Lisp Symposium '18, 10th ELS, 10th European Lisp Symposium, European Lisp Conference 2018, European Lisp Conference '18 -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info

1 0

[Final CfP] European Lisp Symposium 2018 -- Deadline extension
by Didier Verna 20 Feb '18

20 Feb '18

ELS'18 - 11th European Lisp Symposium Centro Cultural Cortijo de Miraflores Marbella, Málaga Spain April 16-17 2018 Sponsored by Brunner Software GmbH and EPITA http://www.european-lisp-symposium.org/ *** Important: submission deadline extended to Sunday Feb. 25! 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, Hop and so on. We encourage everyone interested in Lisp to participate. The 11th European Lisp Symposium invites high quality papers about novel research results, insights and lessons learned from practical applications and educational perspectives. We also encourage submissions about known ideas as long as they are presented in a new setting and/or in a highly elegant way. Topics include but are not limited to: - Context-, aspect-, domain-oriented and generative programming - Macro-, reflective-, meta- and/or rule-based development approaches - Language design and implementation - Language integration, inter-operation and deployment - Development methodologies, support and environments - Educational approaches and perspectives - Experience reports and case studies We invite submissions in the following forms: Papers: Technical papers of up to 8 pages that describe original results or explain known ideas in new and elegant ways. Demonstrations: Abstracts of up to 2 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. The symposium will also provide slots for lightning talks, to be registered on-site every day. All submissions should be formatted following the ACM SIGS guidelines and include ACM Computing Classification System 2012 concepts and terms. Submissions should be uploaded to Easy Chair, at the following address: https://www.easychair.org/conferences/?conf=els2018 Note: to help us with the review process please indicate the type of submission by entering either "paper", "demo", or "tutorial" in the Keywords field. Important dates: - 25 Feb 2018 Submission deadline (*** extended! ***) - 19 Mar 2018 Notification of acceptance - 25 Mar 2018 Early registration deadline - 02 Apr 2018 Final papers due - 16-17 Apr 2018 Symposium Programme chair: David Cooper, Genworks Intl., USA Local chairs: Andrew Lawson, Ravenpack, Spain Programme committee: Andy Wingo, Igalia, Spain Christophe Rhodes, Goldsmiths University, UK Christopher Wellons Null Program Canada Irène Durand, LaBRI, Université de Bordeaux, France Julian Padget, University of Bath, UK Ludovic Courtès, Inria, France Michael Sperber, DeinProgramm, Germany Nicolas Neuss, FAU Erlangen-Nürnberg, Germany Olin Shivers Northwestern University USA Philipp Marek, Austria Robert Strandh, LaBRI, Université de Bordeaux, France Sacha Chua Living an Awesome Life Canada Scott McKay, Future Fuel, USA Search Keywords: #els2018, ELS 2018, ELS '18, European Lisp Symposium 2018, European Lisp Symposium '18, 10th ELS, 10th European Lisp Symposium, European Lisp Conference 2018, European Lisp Conference '18 -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info

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