[racket-users] stream-lazy

2015-07-26 Thread Jos Koot
Hi Modules racket/streams and srfi/41/streams do not export stream-lazy. Module srfi/41/streams exports stream-lambda and define-stream. Module racket/streams does not export these. When Phil Bewig was preparing his srfi 41, I had may discussions with him about providing stream-lazy to the

[racket-users] TR: Option values

2015-07-26 Thread Jordan Johnson
Hi all, Writing TR code, I find that the more I use the Option type, the more I want something like Haskell’s Maybe monad. Is there any existing tool I’m missing, that provides for applying functions to values of type (Option x), by propagating failures? If not, would it be sensible to

Re: [racket-users] saving a BMP in racket

2015-07-26 Thread 'John Clements' via Racket Users
On Jul 23, 2015, at 2:47 AM, copycat kangren.c...@gmail.com wrote: Yes, i can and will try with the old imagemagick bindings. On Thursday, July 23, 2015 at 6:28:00 AM UTC+8, johnbclements wrote: On Jul 20, 2015, at 4:11 AM, copycat kangren.c...@gmail.com wrote: Hi, not sure if this is

Fwd: Re: [racket-users] What limits would you put on racket?

2015-07-26 Thread Doug Williams
I also forgot to reply to the list. -- Forwarded message -- From: Doug Williams m.douglas.willi...@gmail.com Date: Jul 23, 2015 9:21 AM Subject: Re: [racket-users] What limits would you put on racket? To: Sayth Renshaw flebber.c...@gmail.com Cc: If you're strictly comparing Racket

Re: [racket-users] Scribble undefined tags

2015-07-26 Thread Jordan Johnson
On Jul 25, 2015, at 2:48 PM, Matthew Flatt mfl...@cs.utah.edu wrote: Do the broken references show up when rendering docs with `raco setup` or `raco pkg {install,update}`, or do they show up when running `scribble` directly on the .scrbl file? The former. If you're seeing this behavior when

[racket-users] Slack team for racket

2015-07-26 Thread Jason Yeo
Hi Everyone! For anyone out there who finds IRC too daunting and difficult to use, there's a slack team created just for racketlang at http://racket.slack.com. Get invites to the team at http://racket-slack.herokuapp.com. Cheers, Jason -- You received this message because you are subscribed

[racket-users] must manually delete compiled file for tests/racket/package.rkt ?

2015-07-26 Thread 'John Clements' via users-redirect
I updated my tree today and ran make, and ran into this error: raco pkg update: packages conflict package: compatibility-test package: racket-test module path: tests/racket/package I did a little investigating, and sure enough, I can see that while this file used to be a part of the

Re: [racket-users] must manually delete compiled file for tests/racket/package.rkt ?

2015-07-26 Thread Matthew Flatt
Yes, this is a limitation of `raco pkg` that is on my list to repair. It happens when a file is removed from a linked package, such as the packages in pkgs, and only when the corresponding .zo file is not yet deleted. It's not an actual conflict, because `raco setup` will soon remove the .zo

[racket-users] UDP bytes?

2015-07-26 Thread Слава ПолноеИмя
Sorry, list, for dumb unprofessional question, but I'm not even amateur programmer) How can I convert string and floats to bytes, that can be passed to udp-send? Tried real-floating-point-bytes and string-bytes/utf-8 but it produces not compatible output. Any best practices of forming udp