February 2012 - parenscript-devel - mailman3.common-lisp.net

[parenscript-devel] How to call constructor?
by Miron Brezuleanu 15 Feb '12

15 Feb '12

Hello, I have a problem with the Parenscript from the latest Quicklisp update (2012-02-08). Before this update: I'm trying to instantiate an object using 'new'. Since I wanted to have 'var obj = new ClassName();' and not 'var obj = new ClassName' I used '(ps ((new -class-name)))' which did what I wanted (generate 'new ClassName()'). After the update: '(ps ((new -class-name)))' generates '(new ClassName)()' which is wrong. Luckily for me, 'new ClassName' generated by '(new -class-name)' works. What do I do if I need to generate something like 'new Person(age, shoeSize)'? (i.e. I don't know how to pass parameters to new - and I could not find a description of any special syntax in the manual). '(ps (new -person age shoe-size))', fails with an error which seems to imply that there can be only one argument to new (when printing :-) ). I managed to convince the printer to accept '(ps (new -person age shoe-size))' and generate 'new Person(age, shoeSize)' using the code in this patch: diff --git a/src/printer.lisp b/src/printer.lisp index c37e10c..d7e26f4 100644 --- a/src/printer.lisp +++ b/src/printer.lisp @@ -235,7 +235,14 @@ vice-versa.") (defprinter ps-js:negate (x) "-"(print-op-argument op x)) -(defprinter (ps-js:delete ps-js:typeof ps-js:new ps-js:throw) (x) +(defprinter ps-js:new (&rest x) + "new " + (ps-print (car x)) + "(" + (psw (format nil "~{~a~^, ~}" (mapcar #'symbol-to-js-string (cdr x)))) + ")") + +(defprinter (ps-js:delete ps-js:typeof ps-js:throw) (x) (print-op op)" "(print-op-argument op x)) (defprinter (ps-js:return) (&optional (x nil x?)) Thanks for any suggestions, -- Miron Brezuleanu

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[parenscript-devel] Operator precedence bug
by Daniel Gackle 05 Feb '12

05 Feb '12

(let ((str "a") (n 1)) (+ str (+ n 1))) should produce "a2", but instead compiles to "str + n + 1" and produces "a11".

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[parenscript-devel] ELS 2012, Zadar, Croatia
by Marco Antoniotti 01 Feb '12

01 Feb '12

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

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