# Racket meet-up: Saturday, 4 July 2026 at 18:00 UTC **URL:** \ **Category:** General\ **Tags:** event, meet-up\ **Created:** [June 12, 2026, 11:29am UTC](https://racket.discourse.group/t/racket-meet-up-saturday-4-july-2026-at-18-00-utc/4281 "2026-06-12T11:29:54Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![spdegabrielle](https://yyz2.discourse-cdn.com/free1/user_avatar/racket.discourse.group/spdegabrielle/32/95_2.png) [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Post date:** [June 12, 2026, 11:29am UTC](https://racket.discourse.group/t/racket-meet-up-saturday-4-july-2026-at-18-00-utc/4281/1 "2026-06-12T11:29:54Z")
_ **Everyone is welcome** _ to join us for the :racket: **Racket meet-up** : Saturday, 4 July 2026 at 18:00 UTC :racket: :rhombus: :qi: :racket: :rhombus: :qi: :racket: :rhombus: :qi: :racket: :rhombus: :qi: :racket: :rhombus: :qi: :racket: :rhombus: :qi: :racket: :rhombus: :qi: In your timezone: 2026-07-04T18:00:00Z. ([converter](https://www.timeanddate.com/worldclock/converter.html?iso=20260704T180000&p1=tz_pt&p2=tz_mt&p3=tz_ct&p4=tz_et&p5=1440&p6=136&p7=204&p8=49)). This meet-up will be held at [https://meet.jit.si/Racketmeet-up](https://meet.jit.si/Racketmeet-up) - note: we may be hitting the maximum number of users that jitsi can support so if you have trouble joining the meeting please let us know. At this meet-up: - [**RacketCon Call for presentations**](https://racket.discourse.group/t/racketcon-2026-call-for-presentations/4279) - we need you! You may be unsure or inexperienced with presentations - let us know and we can discuss and help :racket_heart: - **UK Racket Meet-up (Edinburgh)** Tuesday 23 June. register: [https://luma.com/vif8gkn9](https://luma.com/vif8gkn9) / announcement: [UK Racket meet-up Tue 23 June (Edinburgh)](https://racket.discourse.group/t/uk-racket-meet-up-tue-23-june-edinburgh/4266) - **Bay Area Racket meet-up** Saturday 4 July. register: [Bay Area Racket Meetup #2 路 Luma](https://luma.com/fbd1v9ix) / announcement: [Bay Area Racket Meetup #2 - Saturday, July 4, 3pm](https://racket.discourse.group/t/bay-area-racket-meetup-2-saturday-july-4-3pm/4280) - a Racket meet-up in **your city**? (We can help!) - We completely forgot to discuss [Racket v9.2](https://blog.racket-lang.org/2026/05/racket-v9-2.html) 馃槄 at the last meet-up - #Show & Tell - did you make something with Racket? Tell us about it 馃榿 give a demo! - News & rumours 馃摪 - ( **RacketCon** is coming!) [https://con.racket-lang.org/](https://con.racket-lang.org/) - **Something big is coming...** - AOB * * * _ **Racket meet-ups are on the first Saturday of EVERY Month at 18:00 UTC** _ > [@dominik.pantucek](#): > > And remember - showing up at Racket Meetups helps you learn the news of the Racket world as they happen! It is informative, it is interesting, it is helpful, it is greatly appreciated by everyone involved and it is fun! 30 minutes but can overrun (it usually lasts ~1hr) EVERYONE WELCOME 馃榿 Stephen :beetle: 位位位 Spread the word! Share this announcement on social media: ```scheme Racket meet-up: Saturday, 4 July 2026 at 18:00 UTC EVERYONE WELCOME 馃榿 Announcement, Jitsi Meet link & discussion at https://racket.discourse.group/t/racket-meet-up-saturday-4-july-2026-at-18-00-utc/4281 https://luma.com/omsfos9h #lisp #scheme ``` Meet-up announcements are tagged #meet-up RSS: [Racket Discourse - Topics tagged meet-up](https://racket.discourse.group/tag/meet-up.rss) [Racket meet-up 路 Luma](https://luma.com/omsfos9h) 位位位 [![Racket Discourse](https://img.shields.io/discourse/users?label=Discuss%20on%20Racket%20Discourse&logo=racket&server=https%3A%2F%2Fracket.discourse.group)](https://racket.discourse.group/invites/VxkBcXY7yL) [![Racket Discord](https://img.shields.io/discord/571040468092321801?label=Chat%20on%20Racket%20Discord&logo=racket)](https://discord.gg/6Zq8sH5) [![Mastodon Follow](https://img.shields.io/mastodon/follow/110503403357821549?domain=https%3A%2F%2Ffunctional.cafe&logo=racket&label=@racketlang@functional.cafe)](https://functional.cafe/@racketlang) [![Follow Racket on Bluesky](https://img.shields.io/badge/Bluesky-0285FF?logo=bluesky&logoColor=fff&label=Racket%20on&color=0285FF)](https://bsky.app/profile/racket-lang.org) [![chat](https://img.shields.io/badge/zulip-join_chat-brightgreen.svg)](https://racket.zulipchat.com/) See the [Racket Calendar](https://calendar.google.com/calendar/embed?src=a6a7g9sg739gjfeak6ilkh8fdc%40group.calendar.google.com) for more events - let us know if you are running a Racket meet-up so we can add it ! ---
**Author:** ![greghendershott](https://yyz2.discourse-cdn.com/free1/user_avatar/racket.discourse.group/greghendershott/32/98_2.png) [@greghendershott](https://racket.discourse.group/u/greghendershott)\ **Post date:** [June 17, 2026, 12:07pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-4-july-2026-at-18-00-utc/4281/2 "2026-06-17T12:07:56Z")
> [@spdegabrielle](#): > > - **UK Racket Meet-up (Edinburgh)** Tuesday 23 June. I am a little concerned about attendance for this event in 6 days. Approximately the entire adult population of Scotland is in Boston, with no sign of departing soon. Bars are literally running out of lager. 馃榾 ---
**Author:** ![spdegabrielle](https://yyz2.discourse-cdn.com/free1/user_avatar/racket.discourse.group/spdegabrielle/32/95_2.png) [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Post date:** [July 3, 2026, 3:30pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-4-july-2026-at-18-00-utc/4281/3 "2026-07-03T15:30:50Z")
Reminder Racket meet-up: Saturday, 4 July 2026 at 18:00 UTC EVERYONE WELCOME 馃榿 Announcement, Jitsi Meet link & discussion at [Racket meet-up: Saturday, 4 July 2026 at 18:00 UTC](https://racket.discourse.group/t/racket-meet-up-saturday-4-july-2026-at-18-00-utc/4281) [Racket meet-up 路 Luma](https://luma.com/omsfos9h) ---
**Author:** ![babysitter](https://yyz2.discourse-cdn.com/free1/user_avatar/racket.discourse.group/babysitter/32/2126_2.png) [@babysitter](https://racket.discourse.group/u/babysitter)\ **Post date:** [July 5, 2026, 3:34pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-4-july-2026-at-18-00-utc/4281/4 "2026-07-05T15:34:14Z")
## Rhombus 1.0 and mathematical visualization Rhombus reached **1.0** , which led into the picture competition and a discussion about mathematical visualization, especially Escher-inspired graphics. - [LWN article on Rhombus 1.0](https://lwn.net/SubscriberLink/1079001/67840550991151ed/) - [3Blue1Brown's video on one of Escher's mathematical ideas](https://www.youtube.com/watch?v=ldxFjLJ3rVY) * * * ## Fish, `pict`, and Racket graphics From there we drifted into Racket's `pict` library and the surprisingly recurring role of fish in examples and demos, which reminded us of the Fargo fish poster. - [`pict` constructors features `standard-fish`](https://docs.racket-lang.org/pict/More_Pict_Constructors.html) - [Fargo fish poster](https://www.pinterest.com/pin/fargo-fish-poster-by-rakelittle--43065740174760029/) * * * ## RacketCon With RacketCon approaching we talked about the upcoming call for talks. I mentioned Duncan's PhD work in Glasgow around RDF as something that could make an interesting presentation. - [A nanopass approach to a modular RDF implementation](https://dl.acm.org/doi/10.1145/3806383.3815514?__cf_chl_f_tk=FhsXhtvjCJF8PxwIVwxG_4IBmMpXg4UTFbkz1l_KyIw-1783264067-1.0.1.1-pBg95InL0OB57uolo1ihNXQyp2SofqksXRoAtWfdR8w) * * * ## Learning continuations I'm currently trying to understand continuations, so I shared the material I'd been watching: - ["Continuations on the Web and in your OS" by Jay McCarthy (2013)](https://youtu.be/BAMtstt3Jp8) - [Alexis King on "Delimited Continuations, Demystified" @ZuriHac2023](https://youtu.be/DRFsodbxHQo) - [Delimited Continuations for Everyone by Kenichi Asai](https://youtu.be/QNM-njddhIw?si=ZMOb_le3DOMDroWc) - @soegaard recommended Friedman's bibliography as the next place to read: - [https://github.com/schemedoc/bibliography/blob/master/page6.md](https://github.com/schemedoc/bibliography/blob/master/page6.md) * * * ## Sigil, Guile, and David Thompson We then talked about **Sigil** (David Wilson's Scheme language for Guile鈥攏ot the unrelated language with the same name), which naturally led to discussing the Guile ecosystem. - [Sigil Playground](https://usesigil.org/#playground) Remembering Guile projects brought up David Thompson's work: - [Chickadee](https://dthompson.us/projects/chickadee.html) We talked about how Chickadee was followed by Catbird, and how nowadays Guile Hoot has largely become the project people associate with that space. * * * ## Heatwave and the London Underground While chatting about the current heatwave and why parts of the London Underground become so unbearably hot, I shared this short by Hannah Fry - [https://www.youtube.com/shorts/zlI0\_atnBYY](https://www.youtube.com/shorts/zlI0_atnBYY) * * * ## Chess The conversation then wandered into chess. - [blog series on writing a chess engine in Lisp](https://blog.lojic.com/2024/11/06/how-to-program-a-chess-engine-in-lisp/) That reminded me of the Rust conference talk by the Edinburgh developer who built both the strongest UK chess engine and the strongest chess engine written in Rust. - [Writing a top-10 chess engine in Rust](https://www.youtube.com/watch?v=Gx21yYLwn10) * * * ## Rust macros and Dave Herman Since we were already talking about Rust, we discussed its macro system and the influence of Dave Herman鈥攐ne of the key Racket macro researchers鈥攐n Rust's macro design. I also shared Brian Anderson's article about one of Rust's most underappreciated contributors. - [https://brson.github.io/2021/05/02/rusts-most-unrecognized-contributor/](https://brson.github.io/2021/05/02/rusts-most-unrecognized-contributor/)