This week in #Scala (Sep 29, 2025)

Welcome to the new edition of #ThisWeekInScala!

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

New Content

• Effects as Capabilities

• Announcing ZIO Test support in scalamock classic (released in 7.5.0)

• Random Scala Tip #534: Adopt an Error Handling Convention for `Future`

• IntelliJ IDEA x Scala: The Debugger (Part 1)

• Claude Code, Metals, and NVIM

• Integrate JobRunr into Play Framework

• Chez: A Scala Library for JSON Schemas, OpenAPI Spec generation & building AI Apps

• Scautable: One line CSV import and dataframe utilities based on scala’s NamedTuple.

• sn-bindgen-web - Typelevel stack on Scala Native 0.5

• A new repository for Scala nightlies

Events

• ScalaWAW #36 - Scala Plugin for IntelliJ hackathon, Thu, Oct 9, 2025, 6:00 PM | Meetup

• The Scala Workshop, Oct 13th, Singapore

• Func Prog Conf, Oct 15th, Stockholm, Sweden

• Scala.io, Oct 17th, Paris, France

• CFP for DEVJVM, Oct 25th, Barranquilla, Colombia

Releases

• layoutz 2.0

• scalasql 0.2.1

• geminilive4s 0.3.0

• dotty-cps-async 1.1.4

• dynalens 1.1.0

• Play 2.9.9

• Play 3.0.9

• sbt 2.0.0-RC6 released

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)