gmane.lisp.scheme.plt

AW: Help intigrating C/C++ into Scheme

Robert Matovinovic — 2008-12-01T22:11:45

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Re: Web Application

Jens Axel Soegaard — 2008-12-01T21:27:46

http://docs.plt-scheme.org/continue/index.html

Re: Setup and teardown in SchemeUnit

Michał Kwiatkowski — 2008-12-01T21:24:10

That isn't much of an improvement, as I'd have to make a macro for each fixture and tests using the same fixture won't be bundled together. I was thinking more of something looking like this: (test-suite "Test suite with a fixture." #:setup (lambda () (display "Setup\n")) #:teardown (lambda () (display "Teardown\n")) (test-case "Test case 1" (display "#1\n")) (test-case "Test case 2" (display "#2\n"))) Running this test would then print: Setup #1 Teardown Setup #2 Teardown I don't see how available methods of abstraction affect this use case. I use Scheme and I still need the setup/teardown behavior. I'm surprised this pattern isn't included in SchemeUnit by default, as it's common when testing for side-effects. What about adding adding setup/teardown arguments to test-suite, as shown in an example above? Is there a chance it would be included in the next release of SchemeUnit if I implemented this myself? Cheers, mk ___________________________________________

Web Application

Rohan Golwala — 2008-12-01T21:20:48

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Re: abstracting over (PLaneT) requires

Noel Welsh — 2008-12-01T20:26:45

There is also Ryan Culpepper's require.plt N. On Mon, Dec 1, 2008 at 6:38 PM, Rob Hunter public.gmane.org> wrote: _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme

Re: abstracting over (PLaneT) requires

Rob Hunter — 2008-12-01T19:54:03

Alright, cool. Thanks, all. --rob On Mon, Dec 1, 2008 at 10:53 AM, Dave Gurnell public.gmane.org> wrote: _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme

Re: Re: The Philosophy of DrScheme

Eduardo Bellani — 2008-12-01T19:13:36

Hey. Learning by discovery, or appropriation is one of the major tenets of constructionism. I seriously recommend Mindstorms as one revolutionary book (followed by any other Papert work, like the turtle hurdles videos, his ideas are mind blowing in their simplicity and impact). Hugs -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFJNDcsTGtma8x8sd4RAh7xAJ9R+iMP+yN/10DWskQmETvwydSDXACgtE0O gztweQtrKK968IavGvmiLI4= =UUZ2 -----END PGP SIGNATURE----- On Mon, Dec 1, 2008 at 4:26 PM, Greg Woodhouse public.gmane.org> wrote:

Re: abstracting over (PLaneT) requires

Dave Gurnell — 2008-12-01T18:53:34

You can re-provide required elements with all-from-out. I tend to do this in a module called base.ss that is used by all other modules in the code: -- base.ss -- #lang scheme (require (planet foo/bar:1)) (provide (all-from-out (planet foo/bar:1))) -- other.ss -- #lang scheme (require "base.ss") The module acts as the abstraction.

Re: abstracting over (PLaneT) requires

Jay McCarthy — 2008-12-01T18:50:03

Here's a simple way: my-lib.ss: (require (planet "some-file.ss" ("joe" "a-package.plt" MAJOR (= MINOR)))) (provide (all-from-out (planet "some-file.ss" ("joe" "a-package.plt" MAJOR (= MINOR))))) my-old-other-lib.ss: (require (planet "some-file.ss" ("joe" "a-package.plt" MAJOR (= MINOR)))) my-other-lib.ss: (require "my-lib.ss") Jay On Mon, Dec 1, 2008 at 11:38 AM, Rob Hunter public.gmane.org> wrote:

abstracting over (PLaneT) requires

Rob Hunter — 2008-12-01T18:38:42

Is there any way to abstract over requires? In particular, I'm interested in abstracting over the version of a PLaneT package that I require. Something like (require (planet "some-file.ss" ("joe" "a-package.plt" MAJOR (= MINOR)))) where MAJOR and MINOR could be bound in exactly one spot. Thus, I could easily do a system-wide change of which version of a-package.plt I am including. Thanks! Rob _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme

Re: Re: The Philosophy of DrScheme

Greg Woodhouse — 2008-12-01T18:26:16

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Re: Serializing/deserializing in a servlet

Eddie Sullivan — 2008-12-01T16:16:53

Thanks, guys, for the replies. I'm not sure I understand the explanation about namespaces (since there's only one servelet), but using a prefab structure did the trick. -Eddie ----- Original Message ----- From: "Jay McCarthy" public.gmane.org> To: "Robby Findler" public.gmane.org> Cc: "Eddie Sullivan" public.gmane.org>; public.gmane.org> Sent: Friday, November 28, 2008 9:32 PM Subject: Re: [plt-scheme] Serializing/deserializing in a servlet _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme

Re: Unexpected error using "static-files-path"

Thomas Chust — 2008-12-01T16:08:54

Ferreira Maurizio schrieb: Hello, a quick glance at the contents of collects/web-server/servlet-env.ss and at the documentation confirms that from PLT Scheme 4.1.2 to 4.1.3 the signature of serve/servlet changed. In version 4.1.2 serve/servlet accepted a keyword parameter #:extra-files-path with contract path?, in version 4.1.3 the keyword parameter is now called #:extra-files-paths with contract (listof path?). However, the change was probably not correctly reflected in the instant servlet customization API. You can work around that problem by calling serve/servlet directly from your code. Replace #lang web-server/insta by #lang scheme (require web-server/servlet-env) and add (serve/servlet start #:extra-files-paths (list (build-path "htdocs"))) to the bottom of your code. cu, Thomas _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme

Re: Unexpected error using "static-files-path"

Jay McCarthy — 2008-12-01T15:58:46

There was a bug in the insta module. It is fixed in SVN now. If you want to fix it on your installation, change line 64 in web-server/insta/insta.ss from #:extra-files-path extra-files-path to #:extra-files-paths (list extra-files-path) I apologize for the inconvenience Jay On Mon, Dec 1, 2008 at 2:48 AM, Ferreira Maurizio public.gmane.org> wrote:

R: Unexpected error using "static-files-path"

Ferreira Maurizio — 2008-12-01T15:37:58

Noel Welsh wrote: have the latest version (including the minor version number). I'm triyng with a fresh installation of Plt scheme 4.1.3 [3m], under windows 2000. The problem still persists. Regards Maurizio. _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme

Re: Unexpected error using "static-files-path"

Noel Welsh — 2008-12-01T15:11:02

Possibly your installation of PLT Scheme is out of date. Check you have the latest version (including the minor version number). N. On Mon, Dec 1, 2008 at 9:48 AM, Ferreira Maurizio public.gmane.org> wrote: ... _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme

PEPM'09 -- Call for Participation

G. Puebla and G. Vidal — 2008-11-30T23:07:20

ACM SIGPLAN Workshop on Partial Evaluation and Program Manipulation (PEPM'09) January 19-20, 2009 Savannah, Georgia, USA http://clip.dia.fi.upm.es/Conferences/PEPM09 CALL FOR PARTICIPATION IMPORTANT DATES * Hotel reservation deadline: December 18, 2008 * Early registration deadline: December 19, 2008 VENUE PEPM'09 and all POPL'09 affiliated events will take place at the Hyatt Regency Savannah hotel. SCOPE The PEPM Symposium/Workshop series aims at bringing together researchers and practitioners working in the areas of program manipulation, partial evaluation, and program generation. PEPM focuses on techniques, theory, tools, and

Unexpected error using "static-files-path"

Ferreira Maurizio — 2008-12-01T09:48:07

I tried the following example, taken from the tutorial "Continue: Web Applications in PLT Scheme " As i start the program I receive the following error: procedure application: procedure: #; does not expect an argument with keyword #:extra-files-path; arguments were: # #:extra-files-path # #:launch-browser? #t Any suggestion ? Regards Maurizio. #lang web-server/insta (define (start request) '(html (head (title "Testing")) (link ((rel "stylesheet") (href "/test-static.css") (type "text/css"))) (body (h1 "Testing") (h2 "This is a header") (p "This is " (span ((class "hot")) "hot") ".")))) (static-files-path "htdocs") _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme

Re: Setup and teardown in SchemeUnit

Noel Welsh — 2008-12-01T07:54:01

And it's a brand new day... Abstract over a test-case with the setup you want: (define-syntax my-test-case (syntax-rules () [(my-test-case name expr ...) (test-case name (before (my-before-expr) expr ...))])) (my-test-case (+ 1 1)) (my-test-case (+ 2 2)) ... A class is the main unit of abstraction in Java/Python, with overloading the main method of extension. In Scheme its a functions and function parameterisation respectively, so the mechanism of setup/teardown changes to match the language (and I use a macro above for reasons that aren't really important). Adding setup/teardown arguments to test-begin/test-case is something that might be worth doing. In my experience I don't need this often enough to justify it. N. _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme

Re: Setup and teardown in SchemeUnit

Michał Kwiatkowski — 2008-11-30T23:20:56

That would still run the setup only once. Cheers, mk _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme

Re: Mutable and immutable pairs in PLT Scheme

Wolfgang De Meuter — 2008-11-30T23:10:40

We teach SICP as a first course, in parallel with a "standard" course on algorithms and data structures in Scheme. I designed the algo&data course with the following constraints in mind: - the Scheme has to fit SICP. Both courses are first semester courses. - I wanted a module/library language in order to illustrate ADTs with multiple implementations. - I want to be as close as possible to some standard. Therefore, I decided to do R6RS without records etc. So I do use mutable pairs. Cheers Wolf _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-scheme