Do you use if guards in for-comprehensions? You don't, right? They are practically unusable. ❌ This pre-SIP discussion wants to change that, and from the first draft, it looks very promising. This would increase our everyday quality of life significantly! contributors.scala-lang.org/t/pre-sip-if...

Skunk v1.0.0 was released 🎉 This one is packed with the good stuff! ✅ Scala Native 0.5 support ✅ otel4s replacing Natchez ✅ A new fluent API for building sessions ✅ Unix domain sockets & peer auth 👋 Scala 2.12 Smoke out the full changelog! 👇 github.com/typelevel/sk... #scala

For all the curious #Java developers out there, here is a quick look at how to use Scala 3 with Spring Boot. But as the author says:

The only article (well, it's actually a series) about observability you need to read! Recommended by Azuros Cloudapi to both Java and Scala camps! 😂 #java #scala

A cool new CLI tool which helps you discover running Scala-related processes. 📈 It would be awesome if it had an interactive mode so I could kill those zombies right from it! 🧟‍♂️ #scala

Imagine you could derive an Encoder for both #Scala 2.13 and Scala 3 without Shapeless or Mirrors. All with just one API, faster compilation and better error messages. 🤯 (<- the only appropriate reaction to this)

http4s 0.23.34 is out 🎉 #scala The Typelevel stack is now almost completely on Scala Native 0.5: ✅ Cats Effect ✅ fs2 ✅ http4s ✅ Weaver ❌ Skunk github.com/http4s/http4...

I know I've posted about it several times, but sbt 2.0 is truly just around the corner! After checking the list of plugins that are already cross-published, it looks like we're gearing up for a very smooth migration. 🤞 #scala

Metals v1.6.7 is out! 🚀 Thanks to @michal.pawlik.dev , the MCP server now supports stdio! What does this mean for you? No need to run a standalone MCP server in a different terminal and no need to configure HTTP ports anymore! Great job! 👏 #scala scalameta.org/metals/blog/...

I was afraid that I'm the only one who feels the huge traction and positive vibes in the last 2-3 months! ❤️ Because let's be real, the last couple of years in Scala were very hard and a lot of people left. But the sentiment changed, I feel it in the water. (I smell it in the air.) #scala

My other passion (besides Scala) is databases. There is an extension called pgmq, a message queue built on top of Postgres which can cover the scale for 99% of companies. To connect the two passions, I'm building a Scala client called pgmq4s. 🧵 #scala

Scalac is starting a new blog series for managers and engineering leaders. 👔 It's great that it isn't just another news aggregator, but instead focuses on real architecture lessons and trade-offs. After all, if people just want news, they could just follow me! 😀 #scala scalac.io/blog/signal-...

I'll be totally honest - I got lost somewhere in the middle of this article 🤷 But if you are up for some advanced type level shit, this is for you 👇 #scala halotukozak.github.io/posts/scala-...

Speaking of Actors, there is a new research paper which tries to solve a problem when you need a combinations of messages to trigger a specific task. The paper introduces JoinActors, a macro-based library for Scala 3 that brings guarded join patterns to the actor model. #scala

Cats-Actors 2.1.0 just went cross-platform! 🚀 Choose JVM for throughput, Scala Native for instant startup or Scala.js for the browser. Read the full article with a live monkey banana battle! 🐒🍌 cloudmark.github.io/Cats-Actors-... #scala

💡 If you make a library, you should be its first user. Using your own tools is the best way to see what works and what doesn't.

Hearth aka the Scala unified macro for 2.13 and 3 has a new version out! 🎉 I'm definitely no macro expert, so go read the changelog yourself to see all the magic. 🪄 It's huge! github.com/kubuszok/hea... #scala

Scala language is yet again setting the standard that other languages will inevitably steal in 5 years! From now on, it goes AI-only, forbidding human-written code at all! The future is here, and it doesn't need our egos holding back the compiler! 🤖🧠 contributors.scala-lang.org/t/new-policy...

A new, code-first Protobuf library for Scala! Think of it as a Tapir for gRPC services. 👌 Read the full article from Pierre Ricadat to learn why he built it and the benefits it brings. 👇 #scala blog.pierre-ricadat.com/protobuf-goe...

Scala 3.8.3 is out 🎉 Besides the ported optimizer, it features a local on/off coverage switch. 🔄 github.com/scala/scala3...

A nasty vulnerability was found in sbt! ⚠️ Specifically, a command injection flaw affecting Windows users when resolving source dependencies. #scala

Go check out ZIO Blocks! It's a collection of independent libraries with zero or minimal dependencies. Despite the name, ZIO is not needed to use them. ☝️ github.com/zio/zio-blocks #scala

The whole Scala ecosystem was mapped! 🗺️ Ok, maybe not the whole, but this roadmap is pretty thorough. Nice to see a clear path that doesn't throw you straight into category theory on day one. Definitely worth a bookmark if you're learning. 🔖 roadmap.sh/scala #scala

Claude's default method for searching APIs is very inefficient and costly, it usually searches and parses Javadocs or even downloads and extracts JARs. 💰 Cellar lets you instantly query the public API of any Maven JVM dependency right from the terminal. 👇 github.com/VirtusLab/ce... #scala

Another RC version of sbt 2.0 is out! 🎉 There are several improvements, but I really like to see the run task being non-blocking! 🔀 eed3si9n.com/sbt-2.0.0-RC10 #scala

Scala Days is returning to Berlin after several years! 🇩🇪 If you want to support your favorite language, go grab a ticket for the lowest price available right now. (Fair warning, it still isn't exactly cheap 🤷) www.scala-lang.org/blog/2026/03... #scala

Mirrors are garbage. That's the core message from Kalin Rudnicki's talk at Func Prog Sweden! #scala www.youtube.com/watch?v=ffzW...

Compile-time validation in Scala 3 is beautiful. By using inline extension methods, we can throw compiler errors for invalid data before the code even runs. #scala

Kotlin Native looks very promising! See how it stacks up against Scala Native 👇 marioarias.hashnode.dev/comparing-pr... #scala #kotlin

The Scala 2 optimizer has been ported to Scala 3, starting in version 3.8.3-RC3. It's bringing 10-30% faster execution for high-level functional code using smart inlining 🧠 www.scala-lang.org/blog/2026/03... #scala

Scala Native + Tapir + htmx. The ultimate combo! ❤️

The Scala compiler doesn't type-check Chuck Norris's code. Chuck Norris type-checks the compiler. #scala

Who gets excited about a logging framework? You will when you see these benchmarks. 👇 Scribe gives you detailed method and line number logging with absolute zero runtime cost. How? #scala

Scalex looks like a "new" mini language server designed to provide context to LLMs for better searching. Looks interesting, has anyone tried it yet? It feels like there is a huge overlap with Metals 2. github.com/nguyenyou/sc... #scala

Another piece of the puzzle has been updated to Scala Native 0.5, this time it's fs2! 🎉 Now let's wait for http4s, skunk and weaver to join the party! ⌛ github.com/typelevel/fs... #scala

I'm currently working on a tiny library and the truth is, that at least 90 % of the code are bridges to a different json codecs and db backends. And I haven't even started with the ZIO interop 🤷 #scala

Scala 3 compiler in the browser? No problem! (thanks for the tip @kozlowski) Unfortunately, I don't have any background story about this project, so if you happen to have a link to the repo - please share! scalac.univalence.xyz #scala

Scoverage is one of the first plugins I add to any new project. The compiler team finally did the same and found some breakages - but they're already fixing them! 👏 Hopeful that Scoverage in Scala 3 hits full parity with Scala 2 very soon.🤞 #scala scala-lang.org/blog/2026/03...

I'm trying to implement Noel Welsh's better encoding, but I'm not sure if it's suitable for such a small library. Also, I honestly don't think I fully understand it! 😀 I would appreciate any comments or feedback. 🙏 #scala

http4s is a backbone for many mission-critical systems. I'm pleased to share that "Pure functional HTTP APIs in #Scala" by Jens Grassel is free once again, and this time it's for good! 📖 It's a fantastic resource for anyone looking to build robust, battle-tested web backends. leanpub.com/pfhais

I used to think LLMs would make #Python and other mainstream languages dominate forever. But if AI is writing the code, you don't need a language just because it's easy for beginners or hiring. You don't even need to fear refactoring anymore.

Cats Effect v3.7.0 is officially here! 🎉 We've been waiting since the RC dropped back in July 2025 and it finally brings what we wanted: support for Scala Native 0.5. 🚀 What does that mean? Full multithreading on LLVM! ⚡️ #Scala github.com/typelevel/ca...

The @typelevel.org Foundation is officially a public charity! Why should we care about their tax status? 🤔 Because it means way more resources for functional programming and way less overhead! 📉 #scala

Custom skills for Claude and Copilot put together by Alexandru Nedelcu. They explicitly teach the agent how to handle Cats Effect IO, MTL typed errors, and proper Resource lifecycles. 👇 #scala github.com/alexandru/sk...

The milestone v1.0.0 release of the zio-spark wrapper has landed! 🎉 Featuring a major migration to Spark 4. github.com/guizmaii-ope... #scala

Hey FP enthusiasts, if you don't have plans for June 15–18, you have two options: 1️⃣ You can be my emotional support when my second son is born 👶, or 2️⃣ you can visit Elm Camp in one of the most beautiful cities in Czechia 🇨🇿 elm.camp #elm

Metals just dropped the standalone MCP server! 🚀 Not opening an editor is becoming a standard these days. If you live in the terminal, your DX just got significantly better! #scala

I shared this awesome library called layoutz a few months back... The newest version just added Scala.js and Native support! 🚀 #scala

☝️Migrating to sbt 2 is going to be the biggest challenge this year in the Scala ecosystem. Major build tool bumps are historically brutal, but luckily, you don't need to rely entirely on LLMs to rewrite your sbt plugins. #scala

This article asks the hard questions about when data science teams should stop pretending and just write Scala. Worth a read if your data pipelines are outgrowing simple scripts. At what scale do you make the switch? 🤔 www.scalateams.com/blog/scala-p... #scala