# General **URL:** https://racket.discourse.group/c/general/12.md?page=10 [Latest](https://racket.discourse.group/latest.md) · [Categories](https://racket.discourse.group/categories.md) · [Tags](https://racket.discourse.group/tags.md) **Page:** 11 --- ## [LangDev Conference Seville, 17-19 October 2024. CFP](https://racket.discourse.group/t/langdev-conference-seville-17-19-october-2024-cfp/3002)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [July 4, 2024, 12:35pm UTC](https://racket.discourse.group/t/langdev-conference-seville-17-19-october-2024-cfp/3002 "2024-07-04T12:35:14Z")
Thought this might be interesting CALL FOR PRESENTATIONS Open now from: June 6th till July 12th. We solicit talk proposals concerning the application, development, and innovation of language engineering. https://lan… --- ## [Problems about parser-tools/lex](https://racket.discourse.group/t/problems-about-parser-tools-lex/3001)
**Author:** [@qnc](https://racket.discourse.group/u/qnc)\ **Replies:** 2\ **Last updated:** [July 4, 2024, 5:02am UTC](https://racket.discourse.group/t/problems-about-parser-tools-lex/3001 "2024-07-04T05:02:17Z")
I've been writing a parser for a compiler and wish to trace the generated syntax objects' source locations. The documentation told me to simply replace lexer with lexer-src-pos. Doing so does make the procedure produce p… --- ## [Locale for regexp-quote](https://racket.discourse.group/t/locale-for-regexp-quote/2988)
**Author:** [@sorawee](https://racket.discourse.group/u/sorawee)\ **Replies:** 1\ **Last updated:** [July 1, 2024, 6:30am UTC](https://racket.discourse.group/t/locale-for-regexp-quote/2988 "2024-07-01T06:30:19Z")
@gus-massa asked in Fix regexps docs by gus-massa · Pull Request #5027 · racket/racket · GitHub Which locale is used in regexp-quote when it compare bytes in case insensitive? (regexp-match (regexp-quote #"Á" #f) #"á… --- ## [RacketCon 2024! call for participation](https://racket.discourse.group/t/racketcon-2024-call-for-participation/2733)
**Author:** [@jesse](https://racket.discourse.group/u/jesse)\ **Replies:** 4\ **Last updated:** [June 28, 2024, 1:50pm UTC](https://racket.discourse.group/t/racketcon-2024-call-for-participation/2733 "2024-06-28T13:50:47Z")
Greetings, Racketeers! Racket leadership has kicked off the planning for the next edition of RacketCon 2024. We are working on the precise dates -- we're looking at October (mostly likely the 5th and 6th) or possibly No… --- ## [Racket meet-up at Haus Coffee, San Francisco: 2pm Sunday, June 30th](https://racket.discourse.group/t/racket-meet-up-at-haus-coffee-san-francisco-2pm-sunday-june-30th/2982)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [June 26, 2024, 11:30am UTC](https://racket.discourse.group/t/racket-meet-up-at-haus-coffee-san-francisco-2pm-sunday-june-30th/2982 "2024-06-26T11:30:30Z")
Calling all Racket & Lisp enthusiasts in the sfbay! :coffee: Join us for a casual meet-up at Haus Coffee this Sunday, June 30th at 2pm. Code, chat, and connect with fellow and aspiring Racketeers. :arrow\_right: RSVP: Rac… --- ## [(Auto) scrollbars in \`canvas%\`](https://racket.discourse.group/t/auto-scrollbars-in-canvas/2914)
**Author:** [@benknoble](https://racket.discourse.group/u/benknoble)\ **Replies:** 7\ **Last updated:** [June 17, 2024, 5:01pm UTC](https://racket.discourse.group/t/auto-scrollbars-in-canvas/2914 "2024-06-17T17:01:20Z")
I'm back with another scrollbar question :slight\_smile: This time you can demo with raco pkg install https://github.com/benknoble/frosthaven-manager#pict-text-display racket -l frosthaven-manager/gui/pict-text-display … --- ## [How to require with prefix in Typed Racket?](https://racket.discourse.group/t/how-to-require-with-prefix-in-typed-racket/2963)
**Author:** [@charmonium](https://racket.discourse.group/u/charmonium)\ **Replies:** 7\ **Last updated:** [June 15, 2024, 10:51pm UTC](https://racket.discourse.group/t/how-to-require-with-prefix-in-typed-racket/2963 "2024-06-15T22:51:12Z")
Untyped racket has (require (prefix-in xml: xml)). Typed racket has (require/typed xml \[ #| lots of decls here |# \]). How do I "mix" them? --- ## [Nova-bb, rcross don't work (Concrete abstractions)](https://racket.discourse.group/t/nova-bb-rcross-dont-work-concrete-abstractions/2627)
**Author:** [@Kartoffel](https://racket.discourse.group/u/Kartoffel)\ **Replies:** 7\ **Last updated:** [June 12, 2024, 8:04pm UTC](https://racket.discourse.group/t/nova-bb-rcross-dont-work-concrete-abstractions/2627 "2024-06-12T20:04:15Z")
DrRacket Installation and Setup (umn.edu) --- ## [Import for syntax transformer](https://racket.discourse.group/t/import-for-syntax-transformer/2959)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 2\ **Last updated:** [June 11, 2024, 9:14am UTC](https://racket.discourse.group/t/import-for-syntax-transformer/2959 "2024-06-11T09:14:28Z")
hello, i'm refactoring one of my project with modules in scheme , it is running on different implementations of scheme (guile,racket, kawa,...) , i try to use R6RS or R7RS for compatibility. I have many modules. One o… --- ## [How to type amb in the redex exercise?](https://racket.discourse.group/t/how-to-type-amb-in-the-redex-exercise/2954)
**Author:** [@benknoble](https://racket.discourse.group/u/benknoble)\ **Replies:** 4\ **Last updated:** [June 6, 2024, 5:18pm UTC](https://racket.discourse.group/t/how-to-type-amb-in-the-redex-exercise/2954 "2024-06-06T17:18:43Z")
A long time ago I was looking at Exercise 6 in the Redex tutorial, and I stumbled on to the following: I though it would be straightforward to modify the grammar to accept a type (e.g. , (amb t e ...) or (amb e ... : t) … --- ## [Call for Papers: ACM Workshop on Functional Software Architecture](https://racket.discourse.group/t/call-for-papers-acm-workshop-on-functional-software-architecture/2788)
**Author:** [@mike](https://racket.discourse.group/u/mike)\ **Replies:** 2\ **Last updated:** [June 4, 2024, 10:22am UTC](https://racket.discourse.group/t/call-for-papers-acm-workshop-on-functional-software-architecture/2788 "2024-06-04T10:22:11Z")
FUNARCH 2024, 6th September 2024, Milan, Italy. Co-located with ICFP 2024 Timeline Paper submission 3rd June 2024 Author notification 30th June 2024 Camera ready copy 18th July 2024 Workshop 6th Sep… --- ## [Racket meet-up: Saturday, 1 June, 2024 at 18:00 UTC](https://racket.discourse.group/t/racket-meet-up-saturday-1-june-2024-at-18-00-utc/2940)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 1\ **Last updated:** [June 1, 2024, 6:13pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-1-june-2024-at-18-00-utc/2940 "2024-06-01T18:13:37Z")
In your timezone: 2024-06-01T18:00:00Z (UTC). (converter) At this meet-up: Hybrid Meet-ups? Show and tell News & rumours AOB This meet-up will be held at https://meet.jit.si/Racketmeet-up Racket meet-ups are on … --- ## [Spring Lisp Game Jam 2024](https://racket.discourse.group/t/spring-lisp-game-jam-2024/2869)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 1\ **Last updated:** [May 27, 2024, 12:53pm UTC](https://racket.discourse.group/t/spring-lisp-game-jam-2024/2869 "2024-05-27T12:53:05Z")
Racket is a lisp so why not represent in the Spring Lisp Game Jam 2024 https://itch.io/jam/spring-lisp-game-jam-2024 --- ## [Refining Pretty Style Mapping in Racket](https://racket.discourse.group/t/refining-pretty-style-mapping-in-racket/2931)
**Author:** [@NoahStoryM](https://racket.discourse.group/u/NoahStoryM)\ **Replies:** 1\ **Last updated:** [May 22, 2024, 4:56pm UTC](https://racket.discourse.group/t/refining-pretty-style-mapping-in-racket/2931 "2024-05-22T16:56:47Z")
The style mapping for a symbol controls the way that whitespace is inserted when printing a list that starts with the symbol. The current documentation introduces various symbols. I think there's room for improvement. … --- ## [Renaming mechanism for Unicode \`λ\` in Racket](https://racket.discourse.group/t/renaming-mechanism-for-unicode-in-racket/2910)
**Author:** [@NoahStoryM](https://racket.discourse.group/u/NoahStoryM)\ **Replies:** 2\ **Last updated:** [May 20, 2024, 5:53pm UTC](https://racket.discourse.group/t/renaming-mechanism-for-unicode-in-racket/2910 "2024-05-20T17:53:00Z")
I'm considering whether it's necessary and beneficial to define λ through the renaming mechanism. @sorawee pointed out that lambda and λ are not treated as equivalent by free-identifier=?: #lang racket (module sub rack… --- ## [Live coding demo using Racket at DevOpsDaysKC](https://racket.discourse.group/t/live-coding-demo-using-racket-at-devopsdayskc/2922)
**Author:** [@markshead](https://racket.discourse.group/u/markshead)\ **Replies:** 0\ **Last updated:** [May 17, 2024, 2:11am UTC](https://racket.discourse.group/t/live-coding-demo-using-racket-at-devopsdayskc/2922 "2024-05-17T02:11:12Z")
My son and I presented at DevOpsDaysKC yesterday with a talk on pair programming and test-driven development. While the focus wasn't on the programming language, we used Racket because we thought most people could unders… --- ## [Interesting discussion on hacker news (21-April-2024)](https://racket.discourse.group/t/interesting-discussion-on-hacker-news-21-april-2024/2884)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 15\ **Last updated:** [May 14, 2024, 12:36am UTC](https://racket.discourse.group/t/interesting-discussion-on-hacker-news-21-april-2024/2884 "2024-05-14T00:36:22Z")
Interesting because of the difference between what other people believe about Racket the artefact/language/community - and what I believe. While there are many great comments, I also saw what I believe are common miscon… --- ## [Adding more Unicode λ forms to Racket](https://racket.discourse.group/t/adding-more-unicode-forms-to-racket/2911)
**Author:** [@NoahStoryM](https://racket.discourse.group/u/NoahStoryM)\ **Replies:** 2\ **Last updated:** [May 9, 2024, 9:30am UTC](https://racket.discourse.group/t/adding-more-unicode-forms-to-racket/2911 "2024-05-09T09:30:39Z")
I am proposing to introduce additional Unicode λ forms such as case-λ, #%plain-λ, and match-λ\[\*\]\[\*\] to Racket, which seems like a minimal and safe change. I would appreciate your thoughts on this proposal: Do you find… --- ## [Racket HYBRID meet-up: Saturday, 4 May, 2024 at 18:00 UTC](https://racket.discourse.group/t/racket-hybrid-meet-up-saturday-4-may-2024-at-18-00-utc/2868)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 3\ **Last updated:** [May 4, 2024, 8:39pm UTC](https://racket.discourse.group/t/racket-hybrid-meet-up-saturday-4-may-2024-at-18-00-utc/2868 "2024-05-04T20:39:15Z")
Racket HYBRID meet-up LONDON and ONLINE Saturday, 4 May, 2024 at 18:00 UTC This is a chance for folks to present their work in progress and chat in a relaxed atmosphere. At this event: Sid (@countvajhula ) will be … --- ## [Use Git directly for versioning?](https://racket.discourse.group/t/use-git-directly-for-versioning/2896)
**Author:** [@countvajhula](https://racket.discourse.group/u/countvajhula)\ **Replies:** 6\ **Last updated:** [May 3, 2024, 11:08pm UTC](https://racket.discourse.group/t/use-git-directly-for-versioning/2896 "2024-05-03T23:08:29Z")
I recently posted the discussion from a recent Qi meeting on the subject of versioning in the Racket package management ecosystem, and whether it would be useful to be able to indicate a Git version directly on the user … --- ## [Raco pkg install progress bars!](https://racket.discourse.group/t/raco-pkg-install-progress-bars/2897)
**Author:** [@jbclements](https://racket.discourse.group/u/jbclements)\ **Replies:** 0\ **Last updated:** [May 2, 2024, 6:56am UTC](https://racket.discourse.group/t/raco-pkg-install-progress-bars/2897 "2024-05-02T06:56:20Z")
Cool! I just went from v8.12 to nightly, and I'm seeing the fun new progress bars on raco pkg install. Very nice. --- ## [Using \`match\` ellipses on multiple elements?](https://racket.discourse.group/t/using-match-ellipses-on-multiple-elements/2891)
**Author:** [@jbclements](https://racket.discourse.group/u/jbclements)\ **Replies:** 1\ **Last updated:** [April 29, 2024, 1:08am UTC](https://racket.discourse.group/t/using-match-ellipses-on-multiple-elements/2891 "2024-04-29T01:08:19Z")
Context: getting creative with target language syntax in a PL course. I want to use match ellipses to apply to multiple elements. syntax/parse has a ~seq feature that handles this. Here's what I would like to write, ima… --- ## [Request for medium size examples in docs](https://racket.discourse.group/t/request-for-medium-size-examples-in-docs/2880)
**Author:** [@gus-massa](https://racket.discourse.group/u/gus-massa)\ **Replies:** 1\ **Last updated:** [April 24, 2024, 3:13am UTC](https://racket.discourse.group/t/request-for-medium-size-examples-in-docs/2880 "2024-04-24T03:13:59Z")
A few days ago, someone posted in Hacker News a language implemented in Racket. The docs of that langueage are quite complete and explain all the details. But when I see a post of a new language I want to see how it fee… --- ## [A global hash table where values are sets](https://racket.discourse.group/t/a-global-hash-table-where-values-are-sets/2677)
**Author:** [@jkleiser](https://racket.discourse.group/u/jkleiser)\ **Replies:** 10\ **Last updated:** [April 23, 2024, 3:17am UTC](https://racket.discourse.group/t/a-global-hash-table-where-values-are-sets/2677 "2024-04-23T03:17:11Z")
I have a text file of words, and I have found out how to read it, line by line. I extract the words from each line into a list, and those lists look like this: (w0 (w10 w11 w12 ...) (w20 w21 w22 ...)) As I read new line… --- ## [Qi discussion on effects tomorrow](https://racket.discourse.group/t/qi-discussion-on-effects-tomorrow/2870)
**Author:** [@countvajhula](https://racket.discourse.group/u/countvajhula)\ **Replies:** 0\ **Last updated:** [April 18, 2024, 11:30pm UTC](https://racket.discourse.group/t/qi-discussion-on-effects-tomorrow/2870 "2024-04-18T23:30:41Z")
Hi friends, Tomorrow, we're meeting to discuss Qi's handling of computational effects (i.e. anything other than function inputs and outputs - including I/O, state, etc.), and related things such as how user-extensibilit… --- ## [2024 ICFP Programming Contest](https://racket.discourse.group/t/2024-icfp-programming-contest/2860)
**Author:** [@robby](https://racket.discourse.group/u/robby)\ **Replies:** 0\ **Last updated:** [April 8, 2024, 2:38pm UTC](https://racket.discourse.group/t/2024-icfp-programming-contest/2860 "2024-04-08T14:38:16Z")
From a post in another forum. Dear community, The ICFP programming contest 2024 is is held from Friday 28 June 2024 at 12:00 UTC to Monday 1 July 2024 at 12:00 UTC. There will be a lightning division, ending on Saturd… --- ## [Dataframes using tabular-asa](https://racket.discourse.group/t/dataframes-using-tabular-asa/2854)
**Author:** [@jbclements](https://racket.discourse.group/u/jbclements)\ **Replies:** 5\ **Last updated:** [April 6, 2024, 1:47pm UTC](https://racket.discourse.group/t/dataframes-using-tabular-asa/2854 "2024-04-06T13:47:29Z")
I'm looking for a tables / dataframes implementation for Racket. I see tabular-asa, and a quick reading of the docs suggests that it's more or less exactly what I'm looking for. I do see a number of what appear to be doc… --- ## [How to hilight non-racket code with Scribble?](https://racket.discourse.group/t/how-to-hilight-non-racket-code-with-scribble/2832)
**Author:** [@janus](https://racket.discourse.group/u/janus)\ **Replies:** 3\ **Last updated:** [March 30, 2024, 3:35am UTC](https://racket.discourse.group/t/how-to-hilight-non-racket-code-with-scribble/2832 "2024-03-30T03:35:34Z")
As a continuation to this StackOverflow question, I now want to hilight Idris2 code using Scribble. I like Scribble for the styling and the programmability in general, but the code of my documentation is not Scheme/Racke… --- ## [Racket meet-up: Saturday, 6 April, 2024 at 18:00 UTC](https://racket.discourse.group/t/racket-meet-up-saturday-6-april-2024-at-18-00-utc/2843)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [March 29, 2024, 2:22pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-6-april-2024-at-18-00-utc/2843 "2024-03-29T14:22:18Z")
Racket meet-up: Saturday, 6 April, 2024 at 18:00 UTC In your timezone: 2024-04-06T18:00:00Z (UTC). (converter) At this meet-up: Show and tell News & rumours AOB This meet-up will be held at https://meet.jit.si/Rac… --- ## [July 2023 welcome](https://racket.discourse.group/t/july-2023-welcome/2842)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [July 22, 2023, 2:08pm UTC](https://racket.discourse.group/t/july-2023-welcome/2842 "2023-07-22T14:08:23Z")
Welcome to the new people who have just joined us via the invite link posted to the old racket users google group! This is not the only place discussion of Racket and Racket related topics takes place! While the most a… [Previous page](https://racket.discourse.group/c/general/12.md?page=9) [Next page](https://racket.discourse.group/c/general/12.md?page=11)