# Latest **URL:** https://racket.discourse.group/latest.md?page=52 [Latest](https://racket.discourse.group/latest.md) · [Categories](https://racket.discourse.group/categories.md) · [Tags](https://racket.discourse.group/tags.md) **Page:** 53 --- ## [Thank you for a lovely RacketCon](https://racket.discourse.group/t/thank-you-for-a-lovely-racketcon/1426)
**Author:** [@dstorrs](https://racket.discourse.group/u/dstorrs)\ **Replies:** 1\ **Last updated:** [November 8, 2022, 10:03pm UTC](https://racket.discourse.group/t/thank-you-for-a-lovely-racketcon/1426 "2022-11-08T22:03:53Z")
It was great to see everyone. Thank you for putting together another great event. --- ## [Call for Contributions: BOB 2023 \[March 17, Deadline Nov 21\]](https://racket.discourse.group/t/call-for-contributions-bob-2023-march-17-deadline-nov-21/1363)
**Author:** [@mike](https://racket.discourse.group/u/mike)\ **Replies:** 1\ **Last updated:** [November 8, 2022, 6:59pm UTC](https://racket.discourse.group/t/call-for-contributions-bob-2023-march-17-deadline-nov-21/1363 "2022-11-08T18:59:22Z")
As always, Racket material is very welcome at BOB! ================================================================================ BOB Conference 2023 "What happens when we use what's best for a change?" … --- ## [Racket meet-up 5 November at 18:00 UTC :racket:](https://racket.discourse.group/t/racket-meet-up-5-november-at-18-00-utc/1425)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 2\ **Last updated:** [November 5, 2022, 10:27pm UTC](https://racket.discourse.group/t/racket-meet-up-5-november-at-18-00-utc/1425 "2022-11-05T22:27:40Z")
Racket meet-up 5 November at 18:00 UTC :racket: At this meet-up: Show and tell News & rumours AOB Meet-up time at your location: 2022-11-05T18:00:00Z (UTC) (Discourse should convert this for you) In the 'Racket Room'… --- ## [Scribble Cheatsheet](https://racket.discourse.group/t/scribble-cheatsheet/1441)
**Author:** [@a11ce](https://racket.discourse.group/u/a11ce)\ **Replies:** 1\ **Last updated:** [November 5, 2022, 6:15pm UTC](https://racket.discourse.group/t/scribble-cheatsheet/1441 "2022-11-05T18:15:39Z")
I wrote a cheatsheet/quick reference for Scribble: https://docs.racket-lang.org/scribble-cheatsheet/index.html It's purposefully non-exhaustive, but if there's something missing that you think fits the scope lmk or sen… --- ## [Who has upload rights for the Racket YouTube account?](https://racket.discourse.group/t/who-has-upload-rights-for-the-racket-youtube-account/1437)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 10\ **Last updated:** [November 4, 2022, 10:51pm UTC](https://racket.discourse.group/t/who-has-upload-rights-for-the-racket-youtube-account/1437 "2022-11-04T22:51:53Z")
Who has upload rights for the Racket YouTube account? I’ve started working on cutting the videos and I realised I don’t know who to send the completed videos too? Best regards Stephen --- ## [Functional Art, Music, Modeling and Design (FARM 2022) Sep 15: Call for Participation](https://racket.discourse.group/t/functional-art-music-modeling-and-design-farm-2022-sep-15-call-for-participation/1249)
**Author:** [@mike](https://racket.discourse.group/u/mike)\ **Replies:** 0\ **Last updated:** [August 23, 2022, 11:41am UTC](https://racket.discourse.group/t/functional-art-music-modeling-and-design-farm-2022-sep-15-call-for-participation/1249 "2022-08-23T11:41:13Z")
=============================================================================== 10th ACM SIGPLAN International Workshop on Functional Art, Music, Modelling and Design (FARM) Ljubljana, Slovenia, 15th Sept… --- ## [\[TFP 2023 Call for Papers\] 24th International Symposium on Trends in Functional Programming](https://racket.discourse.group/t/tfp-2023-call-for-papers-24th-international-symposium-on-trends-in-functional-programming/1314)
**Author:** [@peter88](https://racket.discourse.group/u/peter88)\ **Replies:** 0\ **Last updated:** [September 19, 2022, 6:53pm UTC](https://racket.discourse.group/t/tfp-2023-call-for-papers-24th-international-symposium-on-trends-in-functional-programming/1314 "2022-09-19T18:53:16Z")
TFP 2023 -- Call for Papers (trendsfp.github.io) Important Dates Submission deadline: pre-symposium, full papers, Wednesday 23rd November, 2022 Submission deadline: pre-symposium, draft papers, Friday 16th December, 2… --- ## [PLDI 2023, Call for Workshops and Tutorials](https://racket.discourse.group/t/pldi-2023-call-for-workshops-and-tutorials/1374)
**Author:** [@wilbowma](https://racket.discourse.group/u/wilbowma)\ **Replies:** 0\ **Last updated:** [October 12, 2022, 5:44pm UTC](https://racket.discourse.group/t/pldi-2023-call-for-workshops-and-tutorials/1374 "2022-10-12T17:44:57Z")
Call for Workshops and Tutorials PLDI 2023 is a world-class forum for researchers and practitioners in programming language design and implementation. As in previous years, PLDI is soliciting proposals for co-located wor… --- ## [What section of the docs would you like more examples for?](https://racket.discourse.group/t/what-section-of-the-docs-would-you-like-more-examples-for/1427)
**Author:** [@dstorrs](https://racket.discourse.group/u/dstorrs)\ **Replies:** 7\ **Last updated:** [November 2, 2022, 9:02pm UTC](https://racket.discourse.group/t/what-section-of-the-docs-would-you-like-more-examples-for/1427 "2022-11-02T21:02:17Z")
I'm volunteering to add examples and expanded text to the Racket documentation. What would be some high-value areas to do that in? Are there particular segments of the docs that you've found hard to understand? Let me… --- ## [Making announcements silent by default](https://racket.discourse.group/t/making-announcements-silent-by-default/1375)
**Author:** [@Laurent.O](https://racket.discourse.group/u/Laurent.O)\ **Replies:** 8\ **Last updated:** [November 2, 2022, 8:31pm UTC](https://racket.discourse.group/t/making-announcements-silent-by-default/1375 "2022-11-02T20:31:00Z")
For some reason, the "Announcements" category has "Watching first post" notifications enabled by default. But these announcements are for (Racket-related) conferences and workshops, which is just spam/noise to me, and I … --- ## [Let's Write a Qi Compiler - Weekly on Friday](https://racket.discourse.group/t/lets-write-a-qi-compiler-weekly-on-friday/1248)
**Author:** [@countvajhula](https://racket.discourse.group/u/countvajhula)\ **Replies:** 6\ **Last updated:** [November 2, 2022, 6:50pm UTC](https://racket.discourse.group/t/lets-write-a-qi-compiler-weekly-on-friday/1248 "2022-11-02T18:50:53Z")
The Qi compiler project is just getting off the ground, and we are starting to meet regularly to discuss ideas, pair-program, and share updates. If you're interested in compilers and DSLs -- whether you are an expert or … --- ## [RacketCon update](https://racket.discourse.group/t/racketcon-update/1384)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 7\ **Last updated:** [November 2, 2022, 6:15pm UTC](https://racket.discourse.group/t/racketcon-update/1384 "2022-11-02T18:15:46Z")
Just a couple more weeks to go till RacketCon! I'm happy to report that we've got our schedule all lined up. Take a look at the RacketCon homepage to see it all. I think we're going to have a great time and learn a lot. … --- ## [Wrap a macro injecting bindings in another macro](https://racket.discourse.group/t/wrap-a-macro-injecting-bindings-in-another-macro/1406)
**Author:** [@scolobb](https://racket.discourse.group/u/scolobb)\ **Replies:** 4\ **Last updated:** [November 2, 2022, 5:49pm UTC](https://racket.discourse.group/t/wrap-a-macro-injecting-bindings-in-another-macro/1406 "2022-11-02T17:49:03Z")
Hi, I have in my toolbox the macro auto-hash-ref/:, defined here. Essentially, the idea is to automatically search for a variable value in a hash table. For example: (define ht (hash 'a 1 'b 2)) (auto-hash-ref/: ht (… --- ## [Macro syntax incompatibility](https://racket.discourse.group/t/macro-syntax-incompatibility/1433)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 2\ **Last updated:** [November 2, 2022, 12:03pm UTC](https://racket.discourse.group/t/macro-syntax-incompatibility/1433 "2022-11-02T12:03:07Z")
hello, i have a macro that works in Guile scheme and is accepted by Racket but the execution is bad: here is the macro: (define-syntax for (lambda (stx) (syntax-case stx () ((kwd (init test incrmt) body ..… --- ## [How to turn a list into a hash table?](https://racket.discourse.group/t/how-to-turn-a-list-into-a-hash-table/1429)
**Author:** [@greg](https://racket.discourse.group/u/greg)\ **Replies:** 2\ **Last updated:** [October 31, 2022, 11:27pm UTC](https://racket.discourse.group/t/how-to-turn-a-list-into-a-hash-table/1429 "2022-10-31T23:27:55Z")
hi guys! i recently started learning racket and still wrestle with some basic constructs. how can i write something like this: (list-to-hashtable (list (λ (list-item) (create-hashtable-key-from-list-item list-item)))) … --- ## [FFI wrapper for a callback with variable number of arguments](https://racket.discourse.group/t/ffi-wrapper-for-a-callback-with-variable-number-of-arguments/1416)
**Author:** [@wluker](https://racket.discourse.group/u/wluker)\ **Replies:** 2\ **Last updated:** [October 31, 2022, 2:11pm UTC](https://racket.discourse.group/t/ffi-wrapper-for-a-callback-with-variable-number-of-arguments/1416 "2022-10-31T14:11:08Z")
In the GEOS C library a variadic printf like function is required as a callback for error reporting and I am unsure how to wrap that with racket's FFI. There is a racket ffi example of how to wrap printf where the types… --- ## [Always on top, racket/gui frame](https://racket.discourse.group/t/always-on-top-racket-gui-frame/1423)
**Author:** [@tehkonst](https://racket.discourse.group/u/tehkonst)\ **Replies:** 2\ **Last updated:** [October 31, 2022, 12:30am UTC](https://racket.discourse.group/t/always-on-top-racket-gui-frame/1423 "2022-10-31T00:30:37Z")
How can I make the frame window from racket/gui to be "pinned" always on top? --- ## [Swindle (CLOS for Racket)](https://racket.discourse.group/t/swindle-clos-for-racket/1419)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [October 29, 2022, 11:23am UTC](https://racket.discourse.group/t/swindle-clos-for-racket/1419 "2022-10-29T11:23:54Z")
Yesterday at the ‘Racket Hackathon/Open Space’, participants worked to add examples to the documentation (thank you all😁). Swindle has been around for a long time and I have often pointed new users who have asked about … --- ## [\[WIP\] Implementing Gentoo's Package Manager Specification formats in Racket](https://racket.discourse.group/t/wip-implementing-gentoos-package-manager-specification-formats-in-racket/1408)
**Author:** [@xgqt](https://racket.discourse.group/u/xgqt)\ **Replies:** 1\ **Last updated:** [October 29, 2022, 1:15am UTC](https://racket.discourse.group/t/wip-implementing-gentoos-package-manager-specification-formats-in-racket/1408 "2022-10-29T01:15:43Z")
Package Manager Specification is a set of rules that a package manager compatible with Gentoo package managers (Portage, Pkgcore, Paludis, ...) should follow, it describes how to parse, create and install ebuilds - which… --- ## [\[unofficial\] RacketCon Virtual Saturday!](https://racket.discourse.group/t/unofficial-racketcon-virtual-saturday/1391)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 1\ **Last updated:** [October 28, 2022, 10:37am UTC](https://racket.discourse.group/t/unofficial-racketcon-virtual-saturday/1391 "2022-10-28T10:37:54Z")
If you are not attending in person you are welcome join us at the \[Unofficial\] RacketCon Virtual Saturday in the Racket Room (gather.town virtual room) You can drop in to the Racket Room at any time on Saturday, plus … --- ## [Racket Slack sign-up](https://racket.discourse.group/t/racket-slack-sign-up/1413)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 1\ **Last updated:** [October 27, 2022, 11:07am UTC](https://racket.discourse.group/t/racket-slack-sign-up/1413 "2022-10-27T11:07:16Z")
Just found out that free accounts on Heroku are being discontinued: https://blog.heroku.com/next-chapter I note that the self registration for racket.slack.com is at https://racket-slack.herokuapp.com/ ....and it is of… --- ## [Preserving original numerator/denominator](https://racket.discourse.group/t/preserving-original-numerator-denominator/1414)
**Author:** [@joeld](https://racket.discourse.group/u/joeld)\ **Replies:** 1\ **Last updated:** [October 26, 2022, 1:57pm UTC](https://racket.discourse.group/t/preserving-original-numerator-denominator/1414 "2022-10-26T13:57:33Z")
Idle question: is there a way to preserve the original numerator and denominator of an exact integer when entered as a ratio? For example, 4/12 evaluates to 1/3 and (numerator 4/12) returns 1, but is it possible to get 4 … --- ## [Structs and Keywords](https://racket.discourse.group/t/structs-and-keywords/1399)
**Author:** [@denis](https://racket.discourse.group/u/denis)\ **Replies:** 10\ **Last updated:** [October 26, 2022, 12:51pm UTC](https://racket.discourse.group/t/structs-and-keywords/1399 "2022-10-26T12:51:38Z")
Coming back to learning Racket after a bit of a pause---I've just realized that Racket does not seem to have native support for keyword assignment in structs. Is that still the case? If so, I've read old blog posts about… --- ## [Pumpkin Plot in Racket](https://racket.discourse.group/t/pumpkin-plot-in-racket/1394)
**Author:** [@alexh](https://racket.discourse.group/u/alexh)\ **Replies:** 2\ **Last updated:** [October 25, 2022, 11:08pm UTC](https://racket.discourse.group/t/pumpkin-plot-in-racket/1394 "2022-10-25T23:08:32Z")
Inspired by the "Digital Art with Matlab" project at GitHub - zappo2/digital-art-with-matlab, I wanted to check out if the Racket 3D plot library could plot pumpkins. Here is the result: Alex. --- ## [Updating the wiki page on creating packages](https://racket.discourse.group/t/updating-the-wiki-page-on-creating-packages/1395)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 3\ **Last updated:** [October 25, 2022, 1:00am UTC](https://racket.discourse.group/t/updating-the-wiki-page-on-creating-packages/1395 "2022-10-25T01:00:29Z")
I’m thinking the wiki page on creating packages needs an update It currently only points to ‘getting started with packages’\[1\] in the docs and ‘Tutorial: Creating a Package’ by Stephen Chang\[2\] What should be added … --- ## [Should we try to bridge chat services?](https://racket.discourse.group/t/should-we-try-to-bridge-chat-services/730)
**Author:** [@simonls](https://racket.discourse.group/u/simonls)\ **Replies:** 10\ **Last updated:** [October 24, 2022, 11:48am UTC](https://racket.discourse.group/t/should-we-try-to-bridge-chat-services/730 "2022-10-24T11:48:18Z")
I am a total noob when it comes to messaging services and setting up bridges between them, also people might have various reasons for not wanting bridges between services. (Bridged messages are often of lesser quality… --- ## [Quick intro to using Racket in VSCode](https://racket.discourse.group/t/quick-intro-to-using-racket-in-vscode/1409)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [October 23, 2022, 6:55am UTC](https://racket.discourse.group/t/quick-intro-to-using-racket-in-vscode/1409 "2022-10-23T06:55:58Z")
Quick intro to using Racket in VSCode by @jestarray It’s good to see resources - like this video - that make it easier for developers to get started using Racket with their preferred editor. Thank you to… --- ## [Dr Racket stepper from the interactions area](https://racket.discourse.group/t/dr-racket-stepper-from-the-interactions-area/1396)
**Author:** [@jgomo3](https://racket.discourse.group/u/jgomo3)\ **Replies:** 5\ **Last updated:** [October 20, 2022, 9:23pm UTC](https://racket.discourse.group/t/dr-racket-stepper-from-the-interactions-area/1396 "2022-10-20T21:23:25Z")
Using BSL, Is it possible to run the stepper from the interaction area? So instead of evaluating the expression directly, DrRacket launch the Stepper just for that expression written in the prompt? The idea is to "run"… --- ## [Rename the category \`dev\`](https://racket.discourse.group/t/rename-the-category-dev/1378)
**Author:** [@soegaard](https://racket.discourse.group/u/soegaard)\ **Replies:** 11\ **Last updated:** [October 20, 2022, 9:17pm UTC](https://racket.discourse.group/t/rename-the-category-dev/1378 "2022-10-20T21:17:38Z")
The category dev looks out of place on the front page. --- ## [\[TIL\] hash-ref is very fast on hasheq](https://racket.discourse.group/t/til-hash-ref-is-very-fast-on-hasheq/1397)
**Author:** [@Laurent.O](https://racket.discourse.group/u/Laurent.O)\ **Replies:** 5\ **Last updated:** [October 17, 2022, 7:14pm UTC](https://racket.discourse.group/t/til-hash-ref-is-very-fast-on-hasheq/1397 "2022-10-17T19:14:12Z")
Not a question per se, just a positive remark: I was wondering whether hash-ref was fast for fixed large sets of fixnums, or if a custom binary search could do better. Answer: It's plenty fast: it can answer 1 000 000 qu… [Previous page](https://racket.discourse.group/latest.md?page=51) [Next page](https://racket.discourse.group/latest.md?page=53)