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September 4th, 2025, ISSUE 597

READING

Understanding Match Types in Scala 3

Confused about match types in Scala 3? read this to learn more - with embedded interactive demonstrations.
Jamie Thompson (@bishabosha)
Scala's Gamble with Direct Style

This is a more superficial article, i.e., an opinion piece. I’m making it my mission, again, to publish more thoughts on my own blog.
Alexandru Nedelcu (@alexelcu)
Custom Error Types Using Cats Effect and MTL

Cats MTL 1.6.0 introduces a brand new lightweight syntax for managing user-defined error types in the Cats ecosystem without requiring complex monad transformers.
Daniel Spiewak (@djspiewak)
Dealing with Java builder's pattern

Explores a nice alternative to deal with Java builder's pattern in Scala.
Alexis Hernandez (@alexitcdev)
Implementing a JWT-based authorization for zio-http

To support the very first zio-http-pac4j release, I also wrote an article, which shows in details how to implement a JWT-based authorization for zio-http and also covers such features as token expiration, encryption, roles and custom payload.
Daniil Sivak
GSoC 2025

Goals: Add fs2 integration to Cyfra, so that fs2 streams can be executed on the GPU via a pipeline; Create a Cyfra interpreter (to run on the CPU) that can simulate Cyfra GPU programs for debugging and profiling..
Why I am moving away from Scala

I have been a Scala developer for almost ten years. It was a fascinating journey, marked by exciting projects and numerous meetings with talented software engineers. However, I decided to step out of Scala, and this post is about why I chose to do so.
Pavels Smirnovs

RELEASES

Pekko 1.2.0

Pekko 1.2.0 ships enhanced Virtual thread support.
Pekko contributors
apollo

A Devise-like authentication library for Http4s.
Joshua K. Farrar
unctorcoder

open source vscode coding assistant in Scala.js
Eason Du

EVENTS

LLM4s Dev Hour – Sundays @ 9am London Time

Just finished another great hour of mob programming. We’re now doing this every Sunday — 60 minutes of live coding, debugging, and learning together in public.
LLM4s
The Scala Workshop, Oct 13th, Singapore

The Scala Workshop is the continuation of the Scala Symposium, providing a forum for researchers and practitioners to discuss the design, implementation, and applications of the Scala programming language. Topics include language features, compiler internals, type systems, libraries, tools, and industrial applications.
EPFL
Func Prog Conf, Oct 15th, Stockholm, Sweden

Func Prog Conf is a half-day conference about functional programming. Don't miss this unique opportunity to learn, network and have a good time!
Func Prog Conf
DEVJVM, Oct 25th, Barranquilla, Colombia

A conference uniting Java, Kotlin, and Scala developers.
DEVJVM

VARIA

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  1. Scala Times Issue #597

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