Re: [racket] How to call a Julia function from DrRacket?

uct 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

[racket] Realm of Racket in Barnes and Noble

I just came back from Barnes and Noble and Real of Racket is now in their Computer books section. Harry Spier Racket Users list: http://lists.racket-lang.org/users

Re: [racket] SRFI-34's guard

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 : > The SRFI-34 port is old and was defined to recognize `else` as an > unbound identifier, compatible with the old `mzscheme` language. > > I've

[racket] Racket v5.93

Racket v5.93 is now available from http://racket-lang.org/ 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 G

[racket] Package Catalog online

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 wil

Re: [racket] [racket-dev] xlsx file parser

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 wrote: > > I believe that the Package manager is working on this problem. > > > On

[racket] Block diagram drawing library

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 const

Re: [racket] How to call a Julia function from DrRacket?

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 Flat

Re: [racket] [racket-dev] xlsx file parser

I believe that the Package manager is working on this problem. On Jan 31, 2014, at 11:00 AM, Chen Xiao 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 wit

Re: [racket] The behaviour of (list 'one 'two 'three)

Hi, I figured out what quote was actually doing. http://www.ccs.neu.edu/home/matthias/HtDP2e/i2-3.html explains it really well. "When ' encounters a plain piece of data--a number, a string, a Boolean, or an image--it disappears. When it sits in front of an open parenthesis, (, it inserts list to t

Re: [racket] SRFI-34's guard

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` inst

Re: [racket] How to call a Julia function from DrRacket?

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: >

Re: [racket] Dynamic module loading

Hi Evan, Your alias file is like a function with the type (-> Void) because it is run only for its effect and its effect is only to "add", which makes it impossible to "subtract". One way to solve this is to change its type to (-> Hash) so that it returns what the hash should be. For instance, (d

[racket] Dynamic module loading

Hello. I've been trying to get a particular use case for module loading to work, and, while I have a mostly functional solution, I am unsure whether I am using the best infrastructure for the task. The explanation is a bit involved, but the basic question is what is the right way to update a runnin

[racket] TFP 2014 - 2nd call for papers

- 2ND C A L L F O R P A P E R S - TFP 2014 === 15th Symposium on Trends in Functional Programming May 26-28, 2014 Utrec