This week in #Scala (Oct 6, 2025)

Welcome to the new edition of #ThisWeekInScala!

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

New Content

• Scala learning, tutorials, references and general related info

• Effects and concurrency in functional programming

• Controlling program flow with capabilities

• An old coding challenge Alexis resolved with Scala

• Understanding Contramap

• How to run sbt tasks with custom settings

Events

• 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

• A new repository for Scala nightlies

• Meet new release of jsoniter-scala with much faster codec derivation

• sbt 1.11.7 released

• Hearth 0.1.0 - the first release of a library that tries to make macros easier

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)