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December 12th, 2024, ISSUE 561

READING

Scala's Hidden Treasures: Five ZIO-Compatible Libraries you didn't know you needed!

Spata for stream-based CSV processing, zio-apache-parquet for typesafe processing of Parquet files, yaml4s for YAML parsing and printing, zio-lmdb for managing high-performance embedded key-value stores, Tranzactio for seamless integration between Doobie and ZIO.
Jorge Vásquez (@jorvasquez2301)
A succinct early exit trick for Option in Scala

Is this "direct style"?
Tanin Na Nakorn (@tanin)
Integrate JobRunr into Play Framework

JobRunr is one of the popular background processing for a JVM application, but it is catered toward Java and Spring Boot. Since there's no popular Scala background processing framework, and I don't want to just roll out my own, I've decided to use JobRunr.
Tanin Na Nakorn (@tanin)
Relative simple and small type-driven dependency injection

Yet another way to approach this subject.
Ruslan Shevchenko (@rssh1)
Scala Space in 2025

scala-cli enhancements, Ox streaming and resiliency, Metals stability and integrations, sttp 4.0, Tapir Netty features, pickler and docs, Besom updates and a new exciting Yaga project, bringing the philosophy of TypeOps!
Adam Warski with Piotr Chabelski, Tomasz Godzik, Łukasz Biały
Modeling in Scala, part 1: modeling your domain

Leverage the power of Scala types in your business code.
Mateusz Kubuszok (@MateuszKubuszok)

EVENTS

Scalar, Mar 27th - 28th 2025, Warsaw, Poland

Join Scalar Conference 2025 and prepare for two exciting days of learning about functional programming with a fantastic community.
Scalar Conference (@scalarconf)
CFP for Lambda Days, June 12th-13th 2025, Kraków, Poland

Call for Talks deadline: Feb 9th, don't hesitate! Our event is one of the biggest functional programming conferences in Europe with 2 days packed with inspiring talks, networking opportunities, and, of course, some fun().
LambdaDays (@LambdaDays)

VIDEOS

ScalaIO Paris 2024 recordings

All talks gathered as a Youtube playlist.
ScalaIO (@ScalaIO_FR)

RELEASES

Helenus 1.7.0

Helenus is collection of Scala utilities for Apache Cassandra. Now with Monix support, withOptions extension method to Future[ScalaPreparedStatement[In, Out]], UnifiedUDTCodec to bring IdenticalUDTCodec and NonIndenticalUDTCodec.
Gustavo De Micheli (@nMoncho)
sbt-steps 0.1.0

An extensible sbt plugin to configure, run and share a list of tasks or commands in your projects. Generates pretty reports in HTML and ASCII, runs locally or in CI with minimal configuration.
Adriaan
etl4s

Powerful, whiteboard-style ETL.
Matthieu Court
esbuild-plugin-scalajs

ESBuild Plugin to bundle Scala.js module.
Windymelt (@windymelt)





  1. 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 .


  2. Scala Times Issue #560

    Free Develocity Build Scans. Pragmatic Type-Level Design. Join us for the Advent of Code 2024. Zio-kafka, faster than java-kafka. Debugging a Scala Compilation Issue, a journey into Variance and LUB.


  3. Scala Times Issue #559

    Last bounties to collect for tapir and sttp. Mill $1000 bounty: Use Scala-Native for Mill Client. Free Develocity Build Scans. 10% discount for Scala Times readers for Functional Scala conference!. Scalar, Mar 27th - 28th 2025, Warsaw, Poland.


  4. Scala Times Issue #558

    New Module Layout for sbt Projects. How I SBT - V. Zionomicon for ZIO 2.1 (free ebook). 10% discount for Scala Times readers for Functional Scala conference!. Scalar, Mar 27th - 28th 2025, Warsaw, Poland.


  5. Scala Times Issue #557

    What is Functional Programming?. Announcing Akka 3. Idiomatic dependency injection for ZIO applications in Scala. ZIO in 2025. Upcoming Changes to Givens in Scala 3.7.


  6. Scala Times Issue #556

    Benchmark results: jsoniter-scala vs simdjson-java . Scalar 2025 extends call for papers!. Scala.IO, Nov 7th-8th, Paris. Functional Scala CFP, Dec 5th, online event. 10% discount for Scala Times readers for Functional Scala conference!.


  7. Scala Times Issue #555

    (In)Validating Library Design. Postmortem of Scala 3.6.0. How to implement LETS on ChainCash. Scalar 2025 extends call for papers!. Scala.IO, Nov 7th-8th, Paris.


  8. Scala Times Issue #554

    SoftwareMill Open Source Bounties. Scala: a mature open-source project. Folding Cheat Sheet #8 - Folding with Monoids . Simple Contract-First Applications. Scalar 2025 extends call for papers!.


  9. Scala Times Issue #553

    Direct-style concurrent streaming. Open com-lihaoyi issue bounties. Scala Project Maintenance Survey. Scalar 2025 extends call for papers!. Scala.IO, Nov 7th-8th, Paris.


  10. Scala Times Issue #552

    Optimal Scalafmt configuration using Genetic Algorithms. Cancellable HTTP requests via Scala's Tapir. Game of Life with Scala.js and Webassembly. Scala without effect systems. The Martin Odersky way.. Scalar 2025 Early Birds!.


  11. Scala Times Issue #551

    Functional Programming in Scala - Edu Plugin. Inline your boilerplate - harnessing Scala 3 metaprogramming without macros. Scalar 2025 Early Birds!. Lambda World, Oct 2nd - 4th, Cadiz, Spain. Art of Scala, Oct 10th, Warsaw, Poland.


  12. Scala Times Issue #550

    Autowire: Zero-Cost Dependency Injection. Another bunch of com.lihaoyi Mill issue bounties. Comparison of Kyo and traditional effects. Scala & Akka: How to secure your code. Fun with Types: All Types of Physics Computations.


  13. Scala Times Issue #549

    Capabilities for Control. Scalar 2025 Call for Papers is open!. Unison Forall, Sept 20th, remote conference. Lambda World. Oct 2nd - 4th, Cadiz, Spain. Call for Speakers - Art of Scala, Oct 10th, Warsaw, Poland.


  14. Scala Times Issue #548

    Perfect Tab Completions. David's programming examples knowledge base. Writing an Android app with Scala.js. Unison Forall, Sept 20th, remote conference. Lambda World. Oct 2nd - 4th, Cadiz, Spain.


  15. Scala Times Issue #547

    Streaming Hash Computations. Launch Scala, faster than Native. Distributed locks in Kubernetes with Scala. The Future Software Engineer. Lambda World. Oct 2nd - 4th, Cadiz, Spain.


  16. Scala Times Issue #546

    Upcoming Changes to Givens in Scala 3.7. Unexpected Scala Functions: groupMap. Lambda World. Oct 2nd - 4th, Cadiz, Spain. Call for Speakers - Art of Scala, Oct 10th, Warsaw, Poland. Scala.IO, Nov 7th-8th, Paris.


  17. Scala Times Issue #545

    ZIO-like dependency injection using implicit resolution. The Mechanics of Mitigation. Publishing test traces to Grafana using otel4s and weaver. Announcing Decisions4s: When Ifs Are Not Enough. State of structural typing support in Scala 3.3.0.


  18. Scala Times Issue #544

    Direct-style Bootzooka: 2024 update | SoftwareMill. The Tri-Z Architecture: a Pattern for Layering ZIO Applications in Scala. The Error Management Manifesto. Migrating to Safety. Benchmarking database sharding in Akka | @lightbend.


  19. Scala Times Issue #543

    Lambda World. Oct 2nd - 4th, Cadiz, Spain. Metals v1.3.4 - Thallium | Metals.


  20. Scala Times Issue #542

    Effective Error Handling. Developer Ecosystem Survey 2024. Pseudorandom Acts of Kindness. Scala 3 Metaprogramming Learning Resources. Scala to WebAssembly: How and Why.


  21. Scala Times Issue #541

    Tapir documentation improvements. Checked exceptions: fixed!. Use cases for Scala. ScalaWAW #33 - beach party! Jul 25th. Lambda World. Oct 2nd - 4th, Cadiz, Spain.


  22. Scala Times Issue #540

    PureConfig with Scala 3 - Tutorial. Developer Experience in Open Source Software. "Learn Functional Programming The Fast Way!" PDF is free. ScalaBridge London @ SiriusXM!, Jul 18th. ScalaWAW #33 - beach party! Jul 25th.


  23. Scala Times Issue #539

    YAML as a valid Scala 3 code. ExecutionContext.parasitic and Friends. ScalaBridge London @ SiriusXM!, Jul 18th. Lambda World. Oct 2nd - 4th, Cadiz, Spain. Faster and less mysterious sbt builds with Develocity.


  24. Scala Times Issue #538

    Make Impossible States Unrepresentable: Network Edition!. Ten things I like about Scala 3. Compiling Bad Code. The ZIO 2 “mental model”. JetBrains course: Functional Programming in Scala.


  25. Scala Times Issue #537

    A Logic Circuit Simulator with Cats-Actors. Magda Stożek - My Scala Story. Lambda World. Oct 2nd - 4th, Cadiz, Spain. ScalaBridge London Jun 20th, 2024. Armored type safety with Iron.


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