This week in #Scala (Dec 1, 2025)

Welcome to the new edition of #ThisWeekInScala!

This blog keeps you updated with the latest Scala and Reactive programming news.

New Content

• Scala Days 2025: Conference Highlights and Talk Recordings

  • Panorama Track– a grand tour of the Scala ecosystem: language evolution, tooling innovation, and community discussions.

  • Industry Track – real-world stories from teams running Scala at scale, exploring lessons learned and business impact.

  • Developer Experience Track – deep dives into tooling, productivity, and how to get more out of your daily Scala flow.

  • Creative & Mix Track – a vibrant mix of technical talks, playful experiments, and unexpected ways Scala shows up in life and work.

• Martin Odersky: Where Are We With Scala’s Capabilities?

• sudori part 8: no-op compilation performance

• Master ZIO: Functional Effect System

• Mocking java.time.Instant.now() in PlayFramework

• ClickHouse with PlayFramework, Slick, and Evolutions

• scaladex-mcp—provides Scaladex information on MCP.

• toon4s: Token-Oriented Object Notation for JVM

• squish-find-the-brains: Nix wrapper for SBT with lockfile-based dependency management

Events

• BOB 2026: Berlin, March 13 - Call open, Early tickets available

Releases

• YAES 0.9.0 is here

• sbt 1.12.0-M1

• sbt 2.0.0-RC7

• Lohika 0.10.0

Learning Materials

• Online Courses (MOOCs) from The Scala Center

• Learn Scala with Alvin Alexander

• Functional Programming in Scala JetBrains course

• Scala 3 Metaprogramming Learning Resources

• The Functional Programming in Scala Course Is Out!

• Functional Declarative Design: A Comprehensive Methodology for Statically-Typed Functional Programming Languages

• Get Programming with Scala by Daniela Sfregola (30% off)

• Play for Scala (30% off)

• Grokking Functional Programming (30% off)

• Functional Programming for Mortals (pay as much as you want)

• Essential Effects by Adam Rosien (20% off)

• Programming in Scala, Fifth Edition

• Functional Event-Driven Architecture: Powered by Scala 3 is now 100% complete

• Zionomicon (code is thisweekinscala)

• Supercharge Scala Future | FP-Tower (50% off)