This week in #Scala (Oct 20, 2025)

Welcome to the new edition of #ThisWeekInScala!

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

New Content

• Demystifying Scala 3 Types

• Exploring Neotype’s capabilities, pitfalls, and limitations in Scala 3

• A simple tool to make illegal states unrepresentable

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

• Simpler Build Tools with Functional and Object Oriented Programming

• Incremental compilation of Scala 3

Events

• Lambda World, Oct 23rd-25th, Cádiz, Spain

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

Releases

• Scala 3.7.3

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

• ldbc 0.4.0

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)