A free, once-weekly Scala news flash. Easy to unsubscribe. Goes out every Thursday.
April 30th, 2025, ISSUE 581

EVENTS

Recursion Schemes & Mill with our special guest Li Haoyi, Mon, Jun 2, 2025, 6:30 PM | Meetup

- Markus Klink, inoio: Recursion is the goto of functional programming - Li Haoyi, author of Hands on Scala: Improving the Scala Build Tool Experience
Scala Hamburg
WORKSHOP: Principled Metaprogramming in Scala 3

This workshop will be given by Jon Pretty on Thursday and Friday of LambdaConf week.
Jon Pretty (@propensive)
The Scala Workshop 2025 - The Scala Workshop 2025

The Scala Workshop is the continuation of the Scala Symposium, providing a forum for researchers and practitioners to discuss the design, implementation, and applications of the Scala programming language. Topics include language features, compiler internals, type systems, libraries, tools, and industrial applications.
Scala Spring Meetup @ Truecaller, Thu, May 15, 2025, 5:00 PM | Meetup

Hello again, Scala lovers! It's time for another Scala meetup, this time hosted by TrueCaller, at their beautiful offices on Mäster Samuelssgatan.
Scala Stockholm

VIDEOS

Programming a Language by Nicolas Rinaudo | Scalar Conference 2025

Programming languages are a large amount of our day to day work and, for some of us, our hobbies. And Nicolas is very much of the opinion that in order to fully understand our tools, we must be able to make them ourselves.
Scalar Conference (@scalarconf)
Durable Event-sourced Workflow Monad... Seriously! - Wojtek Pituła | Scalar Conference 2025

Tired of relying on bulky 3rd-party servers for managing workflows or building lightweight but ad-hoc solutions yourself? Imagine a library that offers a declarative, composable API and that requires only a database to run. Let Wojtek introduce you to workflows4s, a proof-of-concept state-of-the-art library solves the problem of long running stateful processes and builds on top of Scala 3 and principles of functional programming.
Wojtek Pitula (@Krever01)

PODCAST

Lachezar Yankov on the Func Prog Podcast - Zio, Scala and typed functional programming

Episode 2 of the Func Prog Podcast is out! Since this is a Scala-focused episode I thought I would share it here. In this episode I talk to Lachezar Yankov about Scala, Zio and how a powerful type system can help you write correct programs
Lachezar Yankov (@lachezar)

VARIA

Scala Times banners?

Want one? Click here
THE INTERNET
Scala Times stickers?

Want one? Let us know or tweet @scalatimes.
THE INTERNET

POWERED BY SOFTWAREMILL


We've been delivering software projects remotely since 2009. And that's only one of the reasons why we might be the best fit to consult / scale / rescue your project! #WeAreReady https://softwaremill.com/services/





  1. Scala Times Issue #583

    Workflows4s Finally Released - You Might Hate Your Business Processes a Little Less. Business4s & GSoC 2025: 3 Exciting Projects and Not-So-Usual Approach. Unison, Scala, Distributed Systems and Delightful Programming. ScalaWAW #34 May 26th, Warsaw. Scala Hamburg: Recursion Schemes & Mill, Jun 2nd, Hamburg, Germany.

  2. Scala Times Issue #582

    How Scala Ruined My Java (in a good way). IntelliJ IDEA x Scala: Named Tuples. Random Scala Tip #624: The Pitfalls of Option Blindness. From JavaScript to Scala. Scala 3: The Evolution of a Macro.

  3. Scala Times Issue #581

    WORKSHOP: Principled Metaprogramming in Scala 3. The Scala Workshop 2025 - The Scala Workshop 2025. Programming a Language by Nicolas Rinaudo | Scalar Conference 2025.

  4. Scala Times Issue #580

    On vibe coding. Composing Independent Instruction Sets with Free Monads in Scala 3. Announcing Scala.js 1.19.0. Tagless Final for Humans by Noel Welsh | Scalar Conference 2025. Release v1.0.0-RC19 · zio/zio-dynamodb · GitHub.

  5. Scala Times Issue #579

    Scalar Conference 2025 - Summary & Highlights. Experimental Capture Checking: New Syntax for Explicit Capture Polymorphism. Whiteboxish Macro Powers with Named Tuples. IntelliJ Scala Plugin 2025.1 Is Out!. J On the Beach, May 14th - 16th, Málaga, Spain.

  6. Scala Times Issue #578

    Sttp client 4: the Scala HTTP client you always wanted, released!. London Scala User Group Meetup, Apr 16th, London. J On the Beach, May 14th - 16th, Málaga, Spain. 10% discount for Lambda Days, June 12th-13th, Kraków, Poland. Scala Days 2025 CFP, Aug 19th - 21st, Lausanne, Switzerland.

  7. Scala Times Issue #577

    Tagged vs Untagged Unions (in Scala). -XX:+UseCompactObjectHeaders is your new TURBO button for JDK 24+ . Scala Days proposal online hack, Apr 3rd, 8PM CEST, online event. London Scala User Group Meetup, Apr 16th, London. J On the Beach, May 14th - 16th, Málaga, Spain.

  8. Scala Times Issue #576

    API First Scala. Strategies for Efficiently Parallelizing JVM Test Suites. Publishing ZIP artifacts with SBT. London Scala User Group Meetup, Apr 16th, London. J On the Beach, May 14th - 16th, Málaga, Spain.

  9. Scala Times Issue #575

    Data Plumber - Data Integration Pipeline. 15% discount for Scalar, Mar 27th - 28th, Warsaw, Poland. London Scala User Group Meetup, Apr 16th, London. J On the Beach, May 14th - 16th, Málaga, Spain. CFP for Lambda Days, June 12th-13th, Kraków, Poland.

  10. Scala Times Issue #574

    Debugging session #2: Scala 3 lazy vals & serialization. Infrastructure as types: introducing TypeOps. 15% discount for Scalar, Mar 27th - 28th, Warsaw, Poland. London Scala User Group Meetup, Apr 16th, London. J On the Beach, May 14th - 16th, Málaga, Spain.

  11. Scala Times Issue #573

    GSOC 2025: Call for contributors. Drawing Heighway’s Dragon - Recursive Function Rewrite. From Python to Scala: Rewriting 27k Lines of a CLI. Spotify FOSS Fund 2024. Functional World #16, Mar 11th, Online Event.

  12. Scala Times Issue #572

    Rock the JVM partners with the Scala Center. Typelevel Summer of Code 2025. Functional World #16, Mar 11th, Online Event. 15% discount for Scalar, Mar 27th - 28th, Warsaw, Poland. London Scala User Group Meetup, Apr 16th, London.

  13. Scala Times Issue #572

    Fast Incremental JVM Assembly Jar Creation with Mill. Calling Scala Native from Java using FFM. Announcing Scala Days 2025, Aug 19th - 21st, Lausanne, Switzerland. Scala In The City, Feb 25th, Hamburg, Germany. Scala in the City, Feb 26th, Berlin, Germany.

  14. Scala Times Issue #571

    Fast Incremental JVM Assembly Jar Creation with Mill. Calling Scala Native from Java using FFM. Announcing Scala Days 2025, Aug 19th - 21st, Lausanne, Switzerland. Scala In The City, Feb 25th, Hamburg, Germany. Scala in the City, Feb 26th, Berlin, Germany.

  15. Scala Times Issue #570

    Scala Highlights from 2024. Rust from a Scala Perspective: Advent of Code 2024. Scalar, Mar 27th - 28th, Warsaw, Poland. J On the Beach, May 14th - 16th, Málaga, Spain. CFP for Lambda Days, June 12th-13th, Kraków, Poland.

  16. Scala Times Issue #569

    Scala Tooling Spree #1 recap. Scala 3 Migration: Report from the Field. Circuit Breaker — Ox 0.x documentation. The joys of messaging without a message bus. Scalar, Mar 27th - 28th 2025, Warsaw, Poland.

  17. Scala Times Issue #568

    GSoC 2025: Call for Scala projects. Next Scala 3 LTS series will increase minimum required JDK version. Pre-SIP: A Syntax for Collection Literals. Scala Macros and Metaprogramming course. Scalar, Mar 27th - 28th 2025, Warsaw, Poland.

  18. Scala Times Issue #567

    Recap of Advent of Code 2024. Running Cask with Virtual Threads. Zio Schema vs Rust Serde. Scalar, Mar 27th - 28th 2025, Warsaw, Poland. CFP for Lambda Days, June 12th-13th 2025, Kraków, Poland.

  19. Scala Times Issue #566

    Random Scala Tip #568: Beware of Leaking Iterators. Announcing ScalaMock 7. Functional Programming In Scala, Jan 25th, Online Event. Scalar, Mar 27th - 28th 2025, Warsaw, Poland. CFP for Lambda Days, June 12th-13th 2025, Kraków, Poland.

  20. Scala Times Issue #565

    Random Scala Tip #697: Avoid Anonymous Functions as Dependencies. Scalar, Mar 27th - 28th 2025, Warsaw, Poland. CFP for Lambda Days, June 12th-13th 2025, Kraków, Poland. IntelliJ IDEA x Scala - Enums Support.

  21. Scala Times Issue #564

    Google Summer of Code 2024 - Going Feral on The Cloud. Rant on Scala3 tooling (IntelliJ/metals). Scalar, Mar 27th - 28th 2025, Warsaw, Poland. CFP for Lambda Days, June 12th-13th 2025, Kraków, Poland. Where Are the Scala Frameworks? .

  22. Scala Times Issue #563

    Rust vs Scala: Facts and Hype. The IntelliJ Scala Plugin in 2024. Technical Note: Using Circe with java.net.http. Faster CI with Selective Testing. Gems in the Scala Ecosystem.

  23. Scala Times Issue #562

    What Scala has to offer for Java devs. Purify Your Tests Episode IV: The Monoids Strike Back. Scala 2 maintenance plans. Scalar, Mar 27th - 28th 2025, Warsaw, Poland. CFP for Lambda Days, June 12th-13th 2025, Kraków, Poland.

  24. Scala Times Issue #561

    Scala's Hidden Treasures: Five ZIO-Compatible Libraries you didn't know you needed!. A succinct early exit trick for Option in Scala. Integrate JobRunr into Play Framework. Relative simple and small type-driven dependency injection. Scala Space in 2025 .

Organizing an event?
Promote it with
Scala Times.
The Scala Times reader?
Get a banner!
Got a tip?Send it in!
Follow us onTwitter.
Curated by SoftwareMill.
We are hiring.
And taking on projects.