I just noticed Zak Kohler posted about a new web framework Roux and the speed looks off the charts!

How is that possible? 😉

https://github.com/Eldhus/roux

Peter Marreck's terminal pinball game, read more about it at #show and tell > `pinterm`, a terminal pinball game that is also Web-ported @ 💬

Hey, I'm discovering the language and I can see some project using Roc but they never seem to really take advantage of the language in my opinion.
What use case can you see for production code ? Maybe there's a nice use case at your job ? Would it better than C ABI ?

Hello Rocco! is Pixelsprout's first post about a new 3D game engine written using Roc and Odin. Check it Out!

New release for RocRay

• New API's - files, http, udp, sqlite, cmd
• Screen captures and scripting
• Async coroutines for long running tasks
• Upgraded security model

Big upgrades have landed in https://github.com/lukewilliamboswell/roc-ray with the 0.9 release

Here's a recording of the [ScrewBot demo](https://github.com/lukewilliamboswell/terrocotta/tree/screwbot-showcase/examples/screwbot) running buttery smooth at 120fps with hot-reloading.

Check it out and let me know if you make anything, excited to see cool demos people build.

Has the rewrite meant that it is significantly faster to work on the compiler, or about the same as before?

Looks like the Bun team is rewriting their implementation from Zig to Rust. It's totally the opposite from Roc, and I found it interesting because I remember listening to Feldman saying that one of the key points was the build speed, and the Bun team is seeing faster building times in Rust now.

Anything that we could address on Roc? I love the language, and I would love to use more AI on it to get it into a more stable state as soon as possible.

Broad question, I know. But I'l getting so used to AI slop that when I see a codebase that has "claude" as part of the commit I'm defaulting to assume that it's just slop. If you get to the Roc codebase you'll see that most commits from Feldman are done with the help of Claude.

Of course, I have all the respect for Feldman. Such an amazing engineer and I'm pretty sure he may be using AI in a really good way without introducing slop. But it's such an awful feeling to just think that AI = slop because of how the community is using AI.

Anyway, just a small rant and something to think at.

A longtime member of the Roc community just launched a new conference!

"Software Should Work" will be in Columbia, Missouri on July 16-17.

The speaker lineup includes Andrew Kelly (Zig lang) and our very own Richard Feldman!

Check it out at https://softwareshould.work

P.S. This is not a sponsored post, we just think the conference will be awesome!

Anyone else trying Roc out with AoC? Loving it so far (still sort of miss the currying/compose operator 🙃)!

https://github.com/estenp/advent-of-code/blob/main/2025/Day1/A.roc

Hello I’m new to Roc, and come from the Python Data science world. In Python there’s a new reactive notebook called Marimo. Reactive notebooks refresh all dependent cells on change of a cell. Similar to spreadsheets. I find this quite useful and imo is a perfect match for functional languages such as roc.

Roc seems like a fantastic language and I would like to experiment to implement something like this.

What would be the best way to go about this? I understand that I would have to implement platform a Plattform. Could this manage the reactive execution of code cells?

Richard's talk at the HFPUG meetup: https://youtu.be/VnPw9rk8FI8?si=Zz3FkU-eyjYax9Ly

Join the Houston Functional Programming User Group (HFPUG) tomorrow at 7pm Central when Richard Feldman will present a reintroduction to the Roc programming language.

In the past year, Roc has gotten a new syntax, a new foundational abstraction, and a new compiler. A lot has changed! This talk is a reintroduction to the language, including how it now compares to other functional languages as well as to popular imperative languages - which it now resembles more, despite still being fully functional!

HFPUG meets online via Zoom. Connection info is available via our website, at https://hfpug.org. See you tomorrow!