<html><body><div style="color:#000; background-color:#fff; font-family:lucida console, sans-serif;font-size:10pt"><div>>Date: Fri, 31 Jan 2014 11:16:38 -0700 >From: Neil Toronto <<a ymailto="mailto:neil.toronto@gmail.com" href="mailto:neil.toronto@gmail.com">neil.toronto@gmail.com</a>> </div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif;">>Enrique, if you don't mind my asking, where does Racket's math library </div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;">>fall short for the study you have in mind? (Its floating-point support >shouldn't, especially if you work in Typed Racket.) I'm one of its >authors, so I'm looking for suggestions. >Neil ? </div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent; color: rgb(0, 96, 191);"> </div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif;">Hi Neil:</div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif;"> </div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;">First, congratulations for the Plot library and the great Math library.</div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;"> </div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;">Concerning the idea to call Julia functions from DrRacket: it is because I'm working on the visualization of trajectories of sets of points in R^3 that evolve subjects to a different sets of ODE.</div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;"> </div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;">I plan to translate my Racket code to Typed/Racket, as you suggest. But in the short term, I was experimenting with Julia and found a very good performance. On the other hand, calling Julia functions could be similar to calling WxMaxima functions, and its capability with symbolic computation, would be also interesting to integrate.</div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;"> </div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;">With respect to the Plot library, it is really a work of art. I teach undergraduate courses in Linear algebra, Differential equations and Numerical Methods, and in all courses I use DrRacket in different degrees.</div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;"> </div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;">Thank you again for your great work.</div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;"> </div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent; color: rgb(0, 96, 191);"></div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif;"></div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif; background-color: transparent;">Sincerely, Enrique</div><div style="font-size: 10pt; font-family: 'lucida console', sans-serif;"> </div> <div style="font-size: 10pt; font-family: 'lucida console', sans-serif;"> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> From: "users-request@racket-lang.org" <users-request@racket-lang.org> To: users@racket-lang.org Sent: Friday, January 31, 2014 4:18 PM Subject: users Digest, Vol 101, Issue 99 </div> <div class="y_msg_container"> Send users mailing list submissions to <a ymailto="mailto:users@racket-lang.org" href="mailto:users@racket-lang.org">users@racket-lang.org</a> To subscribe or unsubscribe via the World Wide Web, visit http://lists.racket-lang.org/users/listinfo or, via email, send a message with subject or body 'help' to <a ymailto="mailto:users-request@racket-lang.org" href="mailto:users-request@racket-lang.org">users-request@racket-lang.org</a> You can reach the person managing the list at <a ymailto="mailto:users-owner@racket-lang.org" href="mailto:users-owner@racket-lang.org">users-owner@racket-lang.org</a> When replying, please edit your Subject line so it is more specific than "Re: Contents of users digest..." [Racket Users list: http://lists.racket-lang.org/users ] Today's Topics: 1. Re: How to call a Julia function from DrRacket? (Neil Toronto) 2. Block diagram drawing library (Mark Watts) 3. Re: [racket-dev] xlsx file parser (Jay McCarthy) 4. Package Catalog online (Jay McCarthy) 5. Racket v5.93 (Ryan Culpepper) 6. Re: SRFI-34's guard (????) ---------------------------------------------------------------------- Message: 1 Date: Fri, 31 Jan 2014 11:16:38 -0700 From: Neil Toronto <<a ymailto="mailto:neil.toronto@gmail.com" href="mailto:neil.toronto@gmail.com">neil.toronto@gmail.com</a>> To: <a ymailto="mailto:users@racket-lang.org" href="mailto:users@racket-lang.org">users@racket-lang.org</a> Subject: Re: [racket] How to call a Julia function from DrRacket? Message-ID: <<a ymailto="mailto:52EBE886.20607@gmail.com" href="mailto:52EBE886.20607@gmail.com">52EBE886.20607@gmail.com</a>> Content-Type: text/plain; charset=UTF-8; format=flowed Enrique, if you don't mind my asking, where does Racket's math library fall short for the study you have in mind? (Its floating-point support shouldn't, especially if you work in Typed Racket.) I'm one of its authors, so I'm looking for suggestions. Neil ? On 01/31/2014 06:45 AM, Matthew Flatt wrote: > It looks like Julia doesn't provide a foreign interface (e.g., to call > Julia from C). So, I think that you'll have to run Julia in a separate > process via `process` or `subprocess` and communicate with the process > through stdin and stdout. > > At Wed, 29 Jan 2014 16:58:29 -0800 (PST), E Comer wrote: >> Hi Racket developers, programmers and users: >> >> Is there a way to call a Julia function from DrRacket? [I'm trying to integrate >> the number crunching capabilities of Julia with the nice graphics of the Plot >> module in Racket, to study some properties of particular dynamical systems] >> >> Thank you very much for your support. >> >> Enrique____________________ >> Racket Users list: >> <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> > > ____________________ > Racket Users list: > <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> > ------------------------------ Message: 2 Date: Fri, 31 Jan 2014 15:28:03 -0600 From: Mark Watts <<a ymailto="mailto:miraiwarren@gmail.com" href="mailto:miraiwarren@gmail.com">miraiwarren@gmail.com</a>> To: <a ymailto="mailto:users@racket-lang.org" href="mailto:users@racket-lang.org">users@racket-lang.org</a> Subject: [racket] Block diagram drawing library Message-ID: <CAMd3DFaUFj4+<a ymailto="mailto:vJL7EYWPiMVknhU4T1tWN1UsTGtsBRbLisU8OA@mail.gmail.com" href="mailto:vJL7EYWPiMVknhU4T1tWN1UsTGtsBRbLisU8OA@mail.gmail.com">vJL7EYWPiMVknhU4T1tWN1UsTGtsBRbLisU8OA@mail.gmail.com</a>> Content-Type: text/plain; charset="iso-8859-1" Has anyone written a node drawing library using racket drawing code? I want to try out a visual programming paradigm that gives programmers a set of primitive constraint nodes like those depicted here: http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-22.html#%_sec_3.3.5and allows them to construct networks of constraints by drawing connectors between constraints. If someone has written something like this before, it would save me some time figuring out how to do it myself. -- Cheers, Mark Watts Department of Computer Science University of Texas at Austin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.racket-lang.org/users/archive/attachments/20140131/5ddfd2e5/attachment-0001.html> ------------------------------ Message: 3 Date: Fri, 31 Jan 2014 14:31:32 -0700 From: Jay McCarthy <<a ymailto="mailto:jay.mccarthy@gmail.com" href="mailto:jay.mccarthy@gmail.com">jay.mccarthy@gmail.com</a>> To: Matthias Felleisen <<a ymailto="mailto:matthias@ccs.neu.edu" href="mailto:matthias@ccs.neu.edu">matthias@ccs.neu.edu</a>> Cc: "<a ymailto="mailto:users@racket-lang.org" href="mailto:users@racket-lang.org">users@racket-lang.org</a> Users" <<a ymailto="mailto:users@racket-lang.org" href="mailto:users@racket-lang.org">users@racket-lang.org</a>> Subject: Re: [racket] [racket-dev] xlsx file parser Message-ID: <CAJYbDakmKv=vpk_FdcUHKvnoN8vF8L13t0OwqNbhrp+<a ymailto="mailto:h9Xj0fg@mail.gmail.com" href="mailto:h9Xj0fg@mail.gmail.com">h9Xj0fg@mail.gmail.com</a>> Content-Type: text/plain; charset=UTF-8 We just installed a new certificate and everything should be back in order. It took a little while to get the certificate, which is what slowed down the fix. Jay On Fri, Jan 31, 2014 at 9:10 AM, Matthias Felleisen <<a ymailto="mailto:matthias@ccs.neu.edu" href="mailto:matthias@ccs.neu.edu">matthias@ccs.neu.edu</a>> wrote: > > I believe that the Package manager is working on this problem. > > > On Jan 31, 2014, at 11:00 AM, Chen Xiao <<a ymailto="mailto:chenxiao770117@gmail.com" href="mailto:chenxiao770117@gmail.com">chenxiao770117@gmail.com</a>> wrote: > >> But I can't login in package system, I input email and password, no response any more. >> >> I use safari and firefox to try , but not works. >> >> some wrong with package login? >> >> >> 2014-01-31 Chen Xiao <<a ymailto="mailto:chenxiao770117@gmail.com" href="mailto:chenxiao770117@gmail.com">chenxiao770117@gmail.com</a>>: >> Thanks! >> >> >> 2014-01-31 Matthias Felleisen <<a ymailto="mailto:matthias@ccs.neu.edu" href="mailto:matthias@ccs.neu.edu">matthias@ccs.neu.edu</a>>: >> >> >> Place it on >> >> <a href="http://pkgs.racket-lang.org/#" target="_blank">http://pkgs.racket-lang.org/#</a>(!main-distribution)(!main-tests) >> >> which is the new package server. It's particularly easy if you developed on Github. >> >> >> On Jan 30, 2014, at 10:38 PM, Chen Xiao wrote: >> >> > Hi, guys: >> > >> > I wrote a office xlsx file parser. I wonder where place it? Can I commit it to racket core source? Or place it on planet? >> > >> > Chen Xiao >> > _________________________ >> > Racket Developers list: >> > <a href="http://lists.racket-lang.org/dev" target="_blank">http://lists.racket-lang.org/dev</a> >> >> >> > -- Jay McCarthy <<a ymailto="mailto:jay@cs.byu.edu" href="mailto:jay@cs.byu.edu">jay@cs.byu.edu</a>> Assistant Professor / Brigham Young University <a href="http://faculty.cs.byu.edu/~jay" target="_blank">http://faculty.cs.byu.edu/~jay</a> "The glory of God is Intelligence" - D&C 93 ------------------------------ Message: 4 Date: Fri, 31 Jan 2014 15:00:42 -0700 From: Jay McCarthy <<a ymailto="mailto:jay.mccarthy@gmail.com" href="mailto:jay.mccarthy@gmail.com">jay.mccarthy@gmail.com</a>> To: users <<a ymailto="mailto:users@racket-lang.org" href="mailto:users@racket-lang.org">users@racket-lang.org</a>> Subject: [racket] Package Catalog online Message-ID: <CAJYbDan5=jaQwEUopuJKYdVnpws6pg3Jd3t+<a ymailto="mailto:8g38eh_BWzbdMw@mail.gmail.com" href="mailto:8g38eh_BWzbdMw@mail.gmail.com">8g38eh_BWzbdMw@mail.gmail.com</a>> Content-Type: text/plain; charset=UTF-8 The package catalog---pkgs.racket-lang.org---has been read-only for about a week because the SSL certificate expired and most browsers silently drop JS messages to HTTPS servers without good certificates so upload, edit, and login messages were being dropped. A new certificate is in place that will last until 2015/02/01, and we'll be ready to renew next year early so there's no downtime. Sorry for the inconvenience: you should be able to add packages as you like now. Jay -- Jay McCarthy <<a ymailto="mailto:jay@cs.byu.edu" href="mailto:jay@cs.byu.edu">jay@cs.byu.edu</a>> Assistant Professor / Brigham Young University <a href="http://faculty.cs.byu.edu/~jay" target="_blank">http://faculty.cs.byu.edu/~jay</a> "The glory of God is Intelligence" - D&C 93 ------------------------------ Message: 5 Date: Fri, 31 Jan 2014 18:40:43 -0500 From: Ryan Culpepper <<a ymailto="mailto:ryanc@ccs.neu.edu" href="mailto:ryanc@ccs.neu.edu">ryanc@ccs.neu.edu</a>> To: <a ymailto="mailto:users@racket-lang.org" href="mailto:users@racket-lang.org">users@racket-lang.org</a> Subject: [racket] Racket v5.93 Message-ID: <<a ymailto="mailto:52EC347B.2020504@ccs.neu.edu" href="mailto:52EC347B.2020504@ccs.neu.edu">52EC347B.2020504@ccs.neu.edu</a>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Racket v5.93 is now available from <a href="http://racket-lang.org/" target="_blank">http://racket-lang.org/</a> Version 5.93 repairs a few problems with the recent v5.92 release (in preparation for a v6.0 release): * fixed a low-level concurrency problem with the GUI library for Mac OS X, which especially affected 32-bit builds; * fixed GRacket-based launchers (such as `drracket`) in a Unix-style installation; * expanded the list of recognized OpenSSL library versions; * fixed small CSS problems and inconsistencies (relative to v5.3.6) in the new Scribble style as used by the Racket documentation; and * added the version number back to the "racket" directory within the source distribution bundle. ------------------------------ Message: 6 Date: Sat, 1 Feb 2014 09:18:24 +0900 From: ???? <<a ymailto="mailto:masashi.kameda@gmail.com" href="mailto:masashi.kameda@gmail.com">masashi.kameda@gmail.com</a>> To: Matthew Flatt <<a ymailto="mailto:mflatt@cs.utah.edu" href="mailto:mflatt@cs.utah.edu">mflatt@cs.utah.edu</a>> Cc: users <<a ymailto="mailto:users@racket-lang.org" href="mailto:users@racket-lang.org">users@racket-lang.org</a>> Subject: Re: [racket] SRFI-34's guard Message-ID: <CANcsjvhhmSHV9CX2nsrb=-xYhAS-ZO8Oy4gRXHO=<a ymailto="mailto:nm95MKKujg@mail.gmail.com" href="mailto:nm95MKKujg@mail.gmail.com">nm95MKKujg@mail.gmail.com</a>> Content-Type: text/plain; charset="iso-2022-jp" Thanks for telling me. This time, I'd just given up and I used Racket's with-handlers for my brainf*ck interpreter. Thanx. 2014-01-31 Matthew Flatt <<a ymailto="mailto:mflatt@cs.utah.edu" href="mailto:mflatt@cs.utah.edu">mflatt@cs.utah.edu</a>>: > The SRFI-34 port is old and was defined to recognize `else` as an > unbound identifier, compatible with the old `mzscheme` language. > > I've pushed a repair to make `srfi/34` work with `racket` (but > maintaining backward compatibility, too). > > Meanwhile, you can work around the problem by using `#t` instead of > `else` (as you probably already realize). > > Thanks for the report! > > At Wed, 29 Jan 2014 00:20:14 +0900, ???? wrote: > > Hello. > > > > I'd like to use SRFI-34 on Racket, but it says else is not allowed > > eventhough I copied and paseted sample codes stated in SRFI-34. > > > > > (require srfi/34) > > > (guard (condition > > (else > > (display "condition: ") > > (write condition) > > (newline) > > 'exception)) > > (+ 1 (raise 'an-error))) > > . else: not allowed as an expression in: else > > > (guard (condition > > (else > > (display "something went wrong") > > (newline) > > 'dont-care)) > > (+ 1 (raise 'an-error))) > > . else: not allowed as an expression in: else > > > > > > > Is there any reason I couldn't use 'else'? > > > > Thanx. > > ____________________ > > Racket Users list: > > <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> > -------------- next part -------------- An HTML attachment was scrubbed... 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