# General **URL:** https://racket.discourse.group/c/general/12.md?page=1 [Latest](https://racket.discourse.group/latest.md) · [Categories](https://racket.discourse.group/categories.md) · [Tags](https://racket.discourse.group/tags.md) **Page:** 2 --- ## [Bay Area Racket Meetup #2 - Saturday, July 4, 3pm](https://racket.discourse.group/t/bay-area-racket-meetup-2-saturday-july-4-3pm/4280)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 3\ **Last updated:** [July 3, 2026, 3:28pm UTC](https://racket.discourse.group/t/bay-area-racket-meetup-2-saturday-july-4-3pm/4280 "2026-07-03T15:28:11Z")
Bay Area Racket Meetup #2 - Saturday, July 4, 3pm Social event for people interested in the Racket programming language, other Lisps, functional programming, language-oriented programming and related topics. These will … --- ## [‘Flexible metaprogramming with Rhombus’ An article in Linux Weekly News](https://racket.discourse.group/t/flexible-metaprogramming-with-rhombus-an-article-in-linux-weekly-news/4305)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [July 2, 2026, 3:11pm UTC](https://racket.discourse.group/t/flexible-metaprogramming-with-rhombus-an-article-in-linux-weekly-news/4305 "2026-07-02T15:11:17Z")
Flexible metaprogramming with Rhombus An article in Linux Weekly News (free link): Flexible metaprogramming with Rhombus \[LWN.net\] Thank you @Gambiteer for finding this :clap: --- ## [Introducing the (sixteenth RacketCon) team](https://racket.discourse.group/t/introducing-the-sixteenth-racketcon-team/4283)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [June 15, 2026, 9:30pm UTC](https://racket.discourse.group/t/introducing-the-sixteenth-racketcon-team/4283 "2026-06-15T21:30:09Z")
Hi, Organising the (sixteenth RacketCon) is underway! The RacketCon 2026: call for presentations is out and we have confirmed the date October 3-4 and venue Oakstop in Oakland CA. I'd like to introduce some members of… --- ## [Racket meet-up: Saturday, 6 June 2026 at 18:00 UTC](https://racket.discourse.group/t/racket-meet-up-saturday-6-june-2026-at-18-00-utc/4275)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 2\ **Last updated:** [June 6, 2026, 9:35pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-6-june-2026-at-18-00-utc/4275 "2026-06-06T21:35:33Z")
Everyone is welcome to join us for the :racket: Racket meet-up: Saturday, 6 June 2026 at 18:00 UTC In your timezone: 2026-06-06T18:00:00Z (UTC). (converter). This meet-up will be held at https://meet.jit.si/Racketmeet-… --- ## [Bay Area Racket Meetup - June 6, 3pm](https://racket.discourse.group/t/bay-area-racket-meetup-june-6-3pm/4222)
**Author:** [@a11ce](https://racket.discourse.group/u/a11ce)\ **Replies:** 3\ **Last updated:** [June 6, 2026, 3:46pm UTC](https://racket.discourse.group/t/bay-area-racket-meetup-june-6-3pm/4222 "2026-06-06T15:46:03Z")
Bay Area Racket Meetup - June 6, 3pm Social event for people interested in the Racket programming language, other Lisps, functional programming, language-oriented programming and related topics. These will be monthly (f… --- ## [UK Racket meet-up Tue 23 June (Edinburgh)](https://racket.discourse.group/t/uk-racket-meet-up-tue-23-june-edinburgh/4266)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [May 25, 2026, 10:06pm UTC](https://racket.discourse.group/t/uk-racket-meet-up-tue-23-june-edinburgh/4266 "2026-05-25T22:06:24Z")
UK Racket meet-up Tue 23 June 7pm at 56 North, 2 W Crosscauseway, Edinburgh EH8 9JP, UK https://luma.com/vif8gkn9 Thank you to Levon (@babysitter ) for organising our first Racket meet-up in Scotland :racket\_heart: --- ## [Integer versus fixnum](https://racket.discourse.group/t/integer-versus-fixnum/4223)
**Author:** [@MickeyKnox](https://racket.discourse.group/u/MickeyKnox)\ **Replies:** 3\ **Last updated:** [May 21, 2026, 1:13am UTC](https://racket.discourse.group/t/integer-versus-fixnum/4223 "2026-05-21T01:13:40Z")
What is the difference between a integer and a fixnum? More specifically, is there an example for a number, that has different results for exact-integer? and fixnum?? --- ## [UK Racket meet-up 7:30pm Tuesday 19 May 2026](https://racket.discourse.group/t/uk-racket-meet-up-7-30pm-tuesday-19-may-2026/4215)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 3\ **Last updated:** [May 19, 2026, 9:06pm UTC](https://racket.discourse.group/t/uk-racket-meet-up-7-30pm-tuesday-19-may-2026/4215 "2026-05-19T21:06:23Z")
UK Racket meet-up Tuesday 19 May 2026 7:30pm The City Pride :pizza: 28 Farringdon Ln, London EC1R 3AU Join us for discussion and pizza. All welcome. https://luma.com/2efru5cn https://www.eventbrite.co.uk/e/uk-racket… --- ## [How to make changes to a package in the Racket distribution](https://racket.discourse.group/t/how-to-make-changes-to-a-package-in-the-racket-distribution/4219)
**Author:** [@jamesgeddes](https://racket.discourse.group/u/jamesgeddes)\ **Replies:** 2\ **Last updated:** [May 19, 2026, 8:50am UTC](https://racket.discourse.group/t/how-to-make-changes-to-a-package-in-the-racket-distribution/4219 "2026-05-19T08:50:24Z")
The datalog language works in the DrRacket REPL, but not (as far as I can tell) interactively from the command line (or in emacs racket-mode). There is an old thread on this (REPL does not work · Issue #13 · racket/datal… --- ## [\#lang HtDP/DeinProgramm teaching languages ready to use](https://racket.discourse.group/t/lang-htdp-deinprogramm-teaching-languages-ready-to-use/4216)
**Author:** [@mike](https://racket.discourse.group/u/mike)\ **Replies:** 0\ **Last updated:** [May 17, 2026, 11:56am UTC](https://racket.discourse.group/t/lang-htdp-deinprogramm-teaching-languages-ready-to-use/4216 "2026-05-17T11:56:13Z")
The upcoming version 9.2 of Racket will ship with some updates to the #lang versions of the HtDP and DeinProgramm teaching languages that finally make them on par with the traditional, menu-based languages. I.e., if you… --- ## [Spring Lisp Game Jam 2026](https://racket.discourse.group/t/spring-lisp-game-jam-2026/4214)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [May 17, 2026, 9:32am UTC](https://racket.discourse.group/t/spring-lisp-game-jam-2026/4214 "2026-05-17T09:32:58Z")
The Spring Lisp Game Jam 2026 just started :scream: :beetle: --- ## [Poor Man's Effects?](https://racket.discourse.group/t/poor-mans-effects/4200)
**Author:** [@bakgatviooldoos](https://racket.discourse.group/u/bakgatviooldoos)\ **Replies:** 1\ **Last updated:** [May 9, 2026, 8:25pm UTC](https://racket.discourse.group/t/poor-mans-effects/4200 "2026-05-09T20:25:08Z")
Hi, Racket Discourse. I have been toying around with the idea of effect-like controls--in the sense of effect-systems--for use in my experiments with Ollama. I want a way to constrain when and where tool-calls can be m… --- ## [Racket and LLMs](https://racket.discourse.group/t/racket-and-llms/3527)
**Author:** [@dhamidi](https://racket.discourse.group/u/dhamidi)\ **Replies:** 12\ **Last updated:** [May 9, 2026, 2:29pm UTC](https://racket.discourse.group/t/racket-and-llms/3527 "2026-05-09T14:29:21Z")
I was using ChatGPT recently to help me generate a TSX parser using the parser-tools package and it failed spectacularly: it just couldn't figure out that define-tokens defines new functions of the form token-FOO. Seein… --- ## [Racket meet-up: Saturday, 2 May 2026 at 18:00 UTC](https://racket.discourse.group/t/racket-meet-up-saturday-2-may-2026-at-18-00-utc/4191)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 3\ **Last updated:** [May 3, 2026, 9:32am UTC](https://racket.discourse.group/t/racket-meet-up-saturday-2-may-2026-at-18-00-utc/4191 "2026-05-03T09:32:19Z")
Everyone is welcome to join us for the :racket: Racket meet-up: Saturday, 2 May 2026 at 18:00 UTC In your timezone: 2026-05-02T18:00:00Z (UTC). (converter). This meet-up will be held at https://meet.jit.si/Racketmeet-u… --- ## [UK Racket meet-up - London Tuesday 21 April 7:30pm](https://racket.discourse.group/t/uk-racket-meet-up-london-tuesday-21-april-7-30pm/4176)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 1\ **Last updated:** [April 21, 2026, 5:14pm UTC](https://racket.discourse.group/t/uk-racket-meet-up-london-tuesday-21-april-7-30pm/4176 "2026-04-21T17:14:08Z")
UK Racket meet-up Tuesday 21 April 7:30pm at The City Pride :pizza: 28 Farringdon Ln, London EC1R 3AU After the two previous successful events in February and March we are back for April. Join us for discussion and … --- ## [Tomorrow: "Pacman" Continuations](https://racket.discourse.group/t/tomorrow-pacman-continuations/4190)
**Author:** [@countvajhula](https://racket.discourse.group/u/countvajhula)\ **Replies:** 1\ **Last updated:** [April 18, 2026, 9:58am UTC](https://racket.discourse.group/t/tomorrow-pacman-continuations/4190 "2026-04-18T09:58:19Z")
Hello friends, Tomorrow in the regular Qi meeting we will be talking about some recent developments that are likely to be of broad interest, including: A proof-of-concept (in fact, two of them, using totally separate … --- ## [\-- WebRacket --](https://racket.discourse.group/t/webracket/4123)
**Author:** [@soegaard](https://racket.discourse.group/u/soegaard)\ **Replies:** 32\ **Last updated:** [March 31, 2026, 2:09pm UTC](https://racket.discourse.group/t/webracket/4123 "2026-03-31T14:09:46Z")
Hi All, For some time been working on a Racket to WebAssembly compiler. Today the website went live: https://soegaard.github.io/webracket/ /Jens Axel --- ## [Announcing \`rackup\`](https://racket.discourse.group/t/announcing-rackup/4140)
**Author:** [@samth](https://racket.discourse.group/u/samth)\ **Replies:** 3\ **Last updated:** [March 28, 2026, 1:08am UTC](https://racket.discourse.group/t/announcing-rackup/4140 "2026-03-28T01:08:35Z")
Over the last couple weeks, I (and my hungry ghosts^H^H AI tools) have built rackup, a toolchain installer and manager for Racket. You can get it here: rackup The basic idea is that you install rackup with the classic c… --- ## [Call for papers/talks: ICFP Functional Software Architecture Workshop 2026, Deadline June 1st](https://racket.discourse.group/t/call-for-papers-talks-icfp-functional-software-architecture-workshop-2026-deadline-june-1st/4164)
**Author:** [@doyougnu](https://racket.discourse.group/u/doyougnu)\ **Replies:** 0\ **Last updated:** [March 23, 2026, 3:15pm UTC](https://racket.discourse.group/t/call-for-papers-talks-icfp-functional-software-architecture-workshop-2026-deadline-june-1st/4164 "2026-03-23T15:15:20Z")
Hello everyone, I am happy to announce that the Functional Architecture workshop has been accepted to this years ICFP! The Call for Papers for FUNARCH2026 is open - deadline is June 1st! Send us research papers, experi… --- ## [Illegal Instruction on Pi Zero with Racket 9.1](https://racket.discourse.group/t/illegal-instruction-on-pi-zero-with-racket-9-1/4144)
**Author:** [@nickmain](https://racket.discourse.group/u/nickmain)\ **Replies:** 6\ **Last updated:** [March 19, 2026, 5:51pm UTC](https://racket.discourse.group/t/illegal-instruction-on-pi-zero-with-racket-9-1/4144 "2026-03-19T17:51:08Z")
Has anyone had success running the "Linux (Arm32/ARMv6)" version of 9.1 on a Raspberry Pi Zero W? I am seeing "illegal instruction", which implies that the binary isn't really compiled for ARMv6. Follow up: both 'file'… --- ## [UK Racket meet-up London 17 March 2026](https://racket.discourse.group/t/uk-racket-meet-up-london-17-march-2026/4113)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 2\ **Last updated:** [March 18, 2026, 7:43pm UTC](https://racket.discourse.group/t/uk-racket-meet-up-london-17-march-2026/4113 "2026-03-18T19:43:25Z")
UK Racket meet-up Tuesday 17 March 7:30pm at The City Pride :pizza: 28 Farringdon Ln, London EC1R 3AU We had a successful February Racket meet-up so we agreed to do the same next month! # UK Racket meet-up Tue… --- ## [Racket meet-up: Saturday, 4 April 2026 at 18:00 UTC](https://racket.discourse.group/t/racket-meet-up-saturday-4-april-2026-at-18-00-utc/4145)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 2\ **Last updated:** [March 17, 2026, 7:06pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-4-april-2026-at-18-00-utc/4145 "2026-03-17T19:06:36Z")
Everyone is welcome to join us for the :racket: Racket meet-up: Saturday, 4 April 2026 at 18:00 UTC In your timezone: 2026-04-04T18:00:00Z (UTC). (converter). At this meet-up: Ruckus IDE rackup announcement Announcin… --- ## [Postfix for Scheme+](https://racket.discourse.group/t/postfix-for-scheme/4134)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 1\ **Last updated:** [March 14, 2026, 3:51pm UTC](https://racket.discourse.group/t/postfix-for-scheme/4134 "2026-03-14T15:51:01Z")
Hi, i added some postfix notation support for Scheme+. There is not a lot of languages and systems supporting postfix syntax: RPN (Reverse Polish Notation) Hewlett Packard calculators (HP-65, HP-15C,HP-41C,HP-34C,....) … --- ## [\-- scribble-tools --](https://racket.discourse.group/t/scribble-tools/4141)
**Author:** [@soegaard](https://racket.discourse.group/u/soegaard)\ **Replies:** 0\ **Last updated:** [March 12, 2026, 10:02am UTC](https://racket.discourse.group/t/scribble-tools/4141 "2026-03-12T10:02:44Z")
Hi all, The ghost and I have put together a little package for typesetting CSS, HTML, JavaScript, and Scribble snippets in Scribble. The idea was to have syntax highlighting that matched the current look of Racket sn… --- ## [Today's Qi meeting notes](https://racket.discourse.group/t/todays-qi-meeting-notes/2323)
**Author:** [@countvajhula](https://racket.discourse.group/u/countvajhula)\ **Replies:** 94\ **Last updated:** [March 11, 2026, 5:57am UTC](https://racket.discourse.group/t/todays-qi-meeting-notes/2323 "2026-03-11T05:57:38Z")
Hi all, We've been sharing these meeting notes privately among attendees and enthusiasts, but some of us felt it would be fun and useful to share them on here, so we'll start doing that. The Qi compiler project has real… --- ## [:racket: Racket meet-up: Saturday, 7 March 2026](https://racket.discourse.group/t/racket-meet-up-saturday-7-march-2026/4128)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 1\ **Last updated:** [March 7, 2026, 8:18pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-7-march-2026/4128 "2026-03-07T20:18:59Z")
Everyone is welcome to join us for the :racket: Racket meet-up: Saturday, 7 March 2026 at 18:00 UTC In your timezone: 2026-03-07T18:00:00Z (UTC). (converter). At this meet-up: WebRacket UK Racket Meet-up London Tu… --- ## [Typed/racket/lang/no-check no longer in Minimal Racket 9.1?](https://racket.discourse.group/t/typed-racket-lang-no-check-no-longer-in-minimal-racket-9-1/4129)
**Author:** [@greghendershott](https://racket.discourse.group/u/greghendershott)\ **Replies:** 3\ **Last updated:** [March 3, 2026, 5:07pm UTC](https://racket.discourse.group/t/typed-racket-lang-no-check-no-longer-in-minimal-racket-9-1/4129 "2026-03-03T17:07:39Z")
Today I got a "cron CI" error about building Racket Mode with Minimal Racket -- now that the latest stable version is 9.1. The file starts with #lang typed/racket/no-check and the error is raco test: (submod (file "./r… --- ## [Finding the path of a loaded module](https://racket.discourse.group/t/finding-the-path-of-a-loaded-module/4122)
**Author:** [@hnmdijkema](https://racket.discourse.group/u/hnmdijkema)\ **Replies:** 14\ **Last updated:** [February 26, 2026, 1:29pm UTC](https://racket.discourse.group/t/finding-the-path-of-a-loaded-module/4122 "2026-02-26T13:29:29Z")
Suppose I want to load a dynamic link library, contained in a racket module. How would I determine where the loaded module can be found? I'd want to do something like this from an FFI module (define-ffi-definer define-… --- ## [Call for Participation: Functional and Logic Programming (FLOPS, May 26-28, Tsukuba)](https://racket.discourse.group/t/call-for-participation-functional-and-logic-programming-flops-may-26-28-tsukuba/4120)
**Author:** [@mike](https://racket.discourse.group/u/mike)\ **Replies:** 0\ **Last updated:** [February 22, 2026, 5:05pm UTC](https://racket.discourse.group/t/call-for-participation-functional-and-logic-programming-flops-may-26-28-tsukuba/4120 "2026-02-22T17:05:25Z")
FLOPS 2026 -- Call for Participation The 18th International Symposium on Functional and Logic Programming May 26-28, Tsukuba, Japan https://functional-logic.org/events/flops/2026/ Welcome to the 18th International Sympos… --- ## [How to set the working directory in DrRacket on Windows?](https://racket.discourse.group/t/how-to-set-the-working-directory-in-drracket-on-windows/4118)
**Author:** [@MickeyKnox](https://racket.discourse.group/u/MickeyKnox)\ **Replies:** 6\ **Last updated:** [February 20, 2026, 10:24pm UTC](https://racket.discourse.group/t/how-to-set-the-working-directory-in-drracket-on-windows/4118 "2026-02-20T22:24:57Z")
I've developed my app on Linux and run it like this: projects/new\> racket -t src/main.rkt Now I want to run it on Windows and I'm getting this error: open-input-file: cannot open input file path: ...\\projects\\new\\sr… [Previous page](https://racket.discourse.group/c/general/12.md) [Next page](https://racket.discourse.group/c/general/12.md?page=2)