No Scala content this week as I'm hiking in Madeira. 🇵🇹 One note though - it's impossible to rent an EV here, so we went with a petrol Skoda. It is amazing how a "brand new" 2025 model car feels like ancient technology.

Reading the new Scala concurrency proposal. To me, it feels like it's going against the majority of the ecosystem. Instead of building parallel worlds and restarting the language yet again, I'd rather see a truly monadic Future that interoperates seamlessly with the FP stack. I'm not convinced direct style is actually simpler. You are just trading flatMap chains for Context Functions and Givens. And the functions are still colored, just with a different shade. Please, let Scala be Scala. Don't try to make it Go. Happy to be proven wrong, though. #scala

In sbt 2.0, --client mode becomes the standard. But you should be using it today. ☝️ It spins up the server in the background, so you don't even need a separate terminal window with sbt open. (Unless you're obsessed with memory control like me 😀) #Scala

Finally... a sane way to work with Jira! #Claude

Testing in Zed is finally seamless with the newest version of the Scala plugin! 🎉 Basic tasks and test buttons now work straight out of the box. No setup required. Watch it in action 👇 #scala

Good engineering teams own their mistakes. What went wrong with the initial release of Scala 3.8 and how the compiler team fixed it in such a short time? Detailed breakdown 👇 #scala

Postmortem of scala/scala3#24994

Scala tooling has definitely rough edges, but name me a single ecosystem where the dependency bot can seamlessly update your dependencies, rewrite the codebase to match the newer API, and send a green PR? I'm talking about Scala Steward + Scalafix rules, of course. 🚀 #scala

Big shoutout to the German tax payers for funding the future of Scala! 🇩🇪💸 The budget won't only go to the Standard Library, but will also impact the tooling we use daily: 📊 scoverage ⚙️ sbt 2.0 Danke schön!

The Sovereign Tech Fund invests in Scala

#scala

"Scala.js doesn’t need to compete with TypeScript and React for customer-facing products. There is a much better and more realistic opportunity: internal tools." I completely agree. The sweet spot for Scala.js isn't the landing page. It's the Admin Panel. 🎯 Check out the new Forms4s library by @Krever01. It ships with Tyrian 👾 support out of the box, but because it's composable, you aren't locked into a specific UI framework.

Medium

Forms4s: Rapid (Internal) UI Development

Scala.js is genuinely great. It lets backend developers build web applications using the same language, type system, and mental models they…

#scala

"Scala.js doesn’t need to compete with TypeScript and React for customer-facing products. There is a much better and more realistic opportunity: internal tools." I completely agree. The sweet spot for Scala.js isn't the landing page. It's the Admin Panel. 🎯 Check out the new Forms4s library by @Krever01. It ships with Tyrian 👾 support out of the box, but because it's composable, you aren't locked into a specific UI framework.

Medium

Forms4s: Rapid (Internal) UI Development

Scala.js is genuinely great. It lets backend developers build web applications using the same language, type system, and mental models they…

#scala

💡 I finally installed zoxide last week. If you haven't, do it now! It's a smarter cd command that learns your habits. No AI involved, just good old-fashioned statistics. Go watch this video, I promise you'll love it! ❤️

Prague friends! 🇨🇿 The next Functional JVM meetup is happening on Feb 9th at Adastra. The topic is spicy, they are pitching it as "modern abstractions" that aren't just a copy of Haskell 😼 🏖️ I’ll be enjoying some time off so I can't make it. Register here:

Meetup

Fun JVM: Modern abstractions for FP with ZIO Prelude and talk about Architecture, Mon, Feb 9, 2026, 6:30 PM | Meetup

**NOTE: we had to change to the 9th from the originally advertised 2nd.** *We'll meet at Adastra office, Mississippi House at Karlín. We'll gathe...

#Scala

This video should have been called "The most complicated implementation of a Counter". I'm leaving with more questions than answers 😀 #scala

I just tried Slack AI, and it’s arguably the best use case for LLMs I’ve seen in a SaaS product. Look at this summary: 👇 Does MS Teams have the same feature?

Now it's official! 🎉 Go read the whole announcement 👇

Scala 3.8 released!

#scala

Hey, Scala early adopters! 🚀 Version 3.8.1 is technically out, but let's wait until everything is officially settled and announced, okay? The upgrade is huge, so it's completely understandable that there might be some minor linkage problems. 🛠️ #scala

🚨 Scala 3.8 deprecates `-Xfatal-warnings` in favor of `-Werror`. Be aware if you rely on `sbt-tpolecat` or `typelevel/scalac-options`, as they need to update their default flag sets.🚩 The fix is already in progress 👇

GitHub

Deprecate -Xfatal-warnings option for Scala 3.8+ by EnviousSwan · Pull Request #225 · typelevel/scalac-options

Closes #219 Getting this error with Scala 3.8.0 and sbt-tpolecat 0.5.2 [warn] Option -Xfatal-warnings is a deprecated alias: use -Werror instead [...

#scala

The first thing that hits you when starting with Go: "Wait, how do I implement this interface?" Well, you can't. Not explicitly. Go's philosophy is: If you walk like a Duck and quack like a Duck, the compiler just assumes you are a Duck. 🦆 #golang

Java doesn't support Higher Kinded Types. But with enough determination, boilerplate and type gymnastics, you can technically emulate them. 🤸‍♂️ #Java #Scala

Scott Logic

Higher Kinded Types with Java and Scala

In this post we will see how Higher Kinded Types types can help increase the flexibility of our code and reduce duplication.

Typeclasses in Java are taking shape! 🏗️ The first experiments have been merged, moving this from theory to reality! #java