Arguably the best resource for learning how to structure production-grade applications with Cats Effect and Fs2 is now completely free! 📖 Huge contribution to the community by Gabriel Volpe 🙌 #Scala

Practical FP in Scala

The missing guide to designing and writing a purely functional application in Scala using the best libraries available in the Typelevel Cats ecosys...

This feature in Scala 3.8 is so experimental that it doesn't even have a SIP yet! 😀 I hope I don't need to explain the code, but be warned: exhaustivity checking is currently broken for this 👇 #Scala

The last missing piece? 🧩 @Zed is finishing up a native Git Graph and it looks incredible! 🤩

Next on the list of Scala 3.8 experimental features: Flexible Varargs. Until now, passing multiple collections to a varargs method required manual concatenation. With this change, you can mix multiple splices and single arguments freely ✨#scala

How to access method default parameters via macro? 🧐 Pretty niche topic, but after reading you will learn: ✅ How some JVM internals work ✅ What the Selectable trait is ✅ About the transparent keyword

Type-Safe Access to Method Parameter Defaults in Scala - halotukozak

Scala Software Engineer in an affair with Kotlin

I've started working on a project in Go - who would have expected that? 🤷 I'm treating it as a personal challenge. Sometimes you have to lose something to understand its value. #golang #scala

Scala 3.8 will bring several experimental features. One of them is the relaxed lambda syntax, where you don't need to put a newline after the colon. Haters of the braceless syntax will hate it even more! 😀 #scala

Hey, Java devs! If you're on JDK 17+, it's time to start using Sealed Classes to eliminate invalid states. On JDK 21+, combine them with Pattern Matching for a truly powerful result. The difference in conciseness and safety is incredible! 🚀 #java

This is a follow-up to the previous article about builder type gymnastics. This time, all the boilerplate code is hidden behind the macro. Sadly, under the Scala 2 macro 😐 #scala

The Builder Macro

I played around with the new procedural SQL in Spark 4. It's wild. I like it. You'll probably hate it! 😀 #spark

Matej Cerny / Scala developer

Apache Spark / Procedural SQL

Apache Spark 4.0 introduces a significant enhancement to its SQL capabilities: experimental support for procedural language.

The SBT plugin absolutely no one asked for... but I built it anyway. 🤷‍♂️ You can now use HOCON files for your build configuration. It’s surprisingly clean. I’d love to hear your opinions 🙏 #scala

GitHub

GitHub - matejcerny/sbt-config: Configure sbt project via HOCON

Configure sbt project via HOCON. Contribute to matejcerny/sbt-config development by creating an account on GitHub.

Apache Spark 4.1 is officially here and it's a massive release! 🔥 1️⃣ TIME WITH TIME ZONE: finally, proper timezone support! 🕒 2️⃣ WITH RECURSIVE: native support for recursive CTEs in SQL. 🔄 3️⃣ Real-Time Mode: sub-second latency (<300ms) for streaming. ⚡ 4️⃣ Declarative Pipelines: define ETL state, let Spark handle the execution. 🏗️ 5️⃣ Pythonization: native Python data sources, remapped JVM exceptions etc. 🐍

Did you know there’s a Functional Programming course you can download right into IntelliJ? It includes 8 lessons and 40 challenges on everything from Immutability to Monads. 🧠 #scala

Anyone who has ever implemented AWS request signing manually will be pleased to know there is an http4s module for it 👇 #scala

GitHub

GitHub - maginepro/http4s-aws: Signed AWS API requests for http4s :lock:

Signed AWS API requests for http4s :lock:. Contribute to maginepro/http4s-aws development by creating an account on GitHub.

Great news, the latest IntelliJ Scala plugin update officially brings support for the upcoming Scala 3.8! #scala https://plugins.jetbrains.com/plugin/1347-scala/versions/stable/918481

Another year of new habits and milestones. Here are the highlights that stand out: 1️⃣ Started a new chapter working for SiriusXM 📻 2️⃣ Continued sharing my passion for tech, (re)posting over 400 articles, videos and tips 💡 3️⃣ Switched to an electric vehicle ⚡ 4️⃣ Started with cold showers - the positive impact is huge! 🚿 5️⃣ Unlocked a core memory: witnessing my son truly experience the sea for the first time 🌊👶 6️⃣ Read 10 books, switching completely to English even for novels 📚 7️⃣ Walked and hiked a total of 970 km, including a 52.5 km in a single activity 🥾⛰️ 8️⃣ Completed 41 strength training sessions, 43 climbing sessions and 24 runs 🏋️‍♂️🧗🏃 9️⃣ Didn't make much progress on the accordion 🪗

Another effect system? 🙄 I usually avoid sharing these because I hate fragmentation and this one is still experimental. However, λÆS deserves a look. It implements a unique direct style approach, and the progress is impressive. 🚀 (Also, there is a cats-effect integration!) #scala

Super important video on how the CPU actually handles threads and memory access, and why it matters for your app's performance. Watch this to see how cats-effect outperforms standard Spring architecture 👇 #scala #java

In Czech, Chanterelle 🍄 is called "the fox". 🦊 In Scala 3, it means easy named tuple manipulation. A handy utility library from the author of ducktape. #scala

GitHub

GitHub - arainko/chanterelle: chanterelle is a library that provides a map-like DSL over named tuples. Scala 3 only. Some chanterelles are scaly.

chanterelle is a library that provides a map-like DSL over named tuples. Scala 3 only. Some chanterelles are scaly. - arainko/chanterelle

Watch how to use opaque types in some more advanced situations (like hiding Monad Transformers in a DSL) 🤸 #scala