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November 2nd, 2023, ISSUE 504


Custom logic from Accept header with Tapir

Imagine a endpoint in which you need to apply custom logic based on the Accept header of the requests. For instance, the endpoint might return the data in different formats like JSON or plain text.
Gaël Jourdan-Weil (@GaelJourdanWeil)
Use Union Types Instead Of Either[E, A] For A More Efficient Validation?

The reason I put together this article is because I couldn't help to notice how similar Either[E, A] is to union type E | A.
Hernan Saab
Using Nix to Develop and Package a Scala Project

This post will show how Nix can be used to develop and package a typical software project without the hassle of relying on language specific version managers or brittle setup scripts.
Ralf Gueldemeister (@rgueldem)

A Scala library that builds on Doodle, and provides a functional and compositional interface to quickly assembly visualizations from small reusable pieces.
Noel Welsh (@noelwelsh)
Scala Center Activity Report for 2023 Q3

Maintaining and Evolving the Scala 3 Compiler, Scala Improvement Process, Better Foundations for Match Types, Scala 3 Language Specification, Scala.js maintenance, Scala 3 Migration, Documentation Website, API for the Scala 3 Presentation Compiler, sbt, and other subjects.
Scala Center (@scala_lang)
How to convert an Option to an Either in Scala

Learn how to use basic pattern matching or toRight method to achieve this goal.
Julien Truffaut (@JulienTruffaut)
Free support for Scala 2 to 3 migration

We support organisations to deliver ambitious Scala 3 projects simply and reliably. You won't find a support team more competent than VirtusLab, as it maintains Scala 3 and is a major contributor to the Scala ecosystem. Feel secure knowing that your projects will have access to top-tier tools, migration, adoption, and modernisation experts.
VirtusLab (@VirtusLab)


How we use sbt-buildinfo in production

This video is about how we use sbt-buildinfo at work.
DevInsideYou (@DevInsideYou)
Zymposium - ZIO Q&A

Dive into this special ZIO Q&A episode where we address your questions - we discuss ZIO HTTP, ZIO Chat, and more!
Ziverge (@zivergetech)
Zymposium - Implementing Actors With ZIO

In this episode, we continue our exploration of implementing actors with ZIO and have some fun with them.
Adam Fraser (@adamfraser)
Zymposium - Auto-Generating OpenAPI Specs from ZIO HTTP

Watch to understand the process and the impact of this automation on development.
Nabil Abdel-Hafeez


10% discount for Functional Scala, Nov 30th - Dec 1st, London

Use code ScalaTimesFS2023 and get our exclusive discount!
Ziverge (@zivergetech)
Advanced Scala Workshop at Functional Scala, Nov 30th - Dec 1st, London

In this special 4-hour workshop from Scala expert John A. De Goes, you will learn more than just the basics of Scala, as you cover parametric polymorphism, higher-kinded types, implicits / givens, type class pattern, Any & Nothing, lambda types, and basic macros.
John A. De Goes (@jdegoes)
LambdaConf 2024, May 4th-10th, Estes Park, Colorado

Get ready!
LambdaConf (@lambda_conf)


tapir 1.8.5

With Netty server-side cancellation, Pickler fixes, option to provide custom WS config in zio-http, and some more tweaks.
tapir contributors (@scalarconf)
tapir-loom 0.2.5

Now with support for the final stable release of Helidon Níma 4.
SoftwareMill (@softwaremill)
jsoniter-scala 2.24.2

Adds support for Scala 3 immutable arrays, as well as an ability to inline compile-time configuration for Scala 3 classes.
Andriy Plokhotnyuk (@aplokhotnyuk)
Metals 1.1.0

New Scala versions support, build server status, run code lens for Mill build server, convert single line comments to multiline, detect project root, error reports in metals doctor, show bloop errors, plus a ton of fixes.
metals contributors

A library that provides type classes to work generically with enumerations in Scala 3.
Jamie Thompson (@bishabosha)
scalac-profiling 1.1.0-RC1

Now with support for Scala 2.13. When compile times become a problem, how can Scala developers reason about the relation between their code and compile times?
scalac-profiling contributors
Stryker4s 0.15

A highly reworked new version of Stryker4s, a tool for mutation testing in Scala.
Stryker4s contributors
scala-cli 1.0.5

Accept --power from anywhere, offline mode (experimental), shorter install script link, the fix sub-command (experimental), support for building static & shared libraries with Scala Native (experimental), and many more updates!
scala-cli contributors
Akka Edge

Akka Edge is a set of features in Akka that will help you with using Akka at the edge of the cloud for higher availability and lower latency.
Lightbend (@lightbend)
pekko-projection 1.0.0

In Pekko Projections you process a stream of events or records from a source to a projected model or external system. Each event is associated with an offset representing the position in the stream. This offset is used for resuming the stream from that position when the projection is restarted.
Pekko contributors

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  18. Scala Times Issue #504

    Custom logic from Accept header with Tapir. Using Nix to Develop and Package a Scala Project. Scala Center Activity Report for 2023 Q3. How to convert an Option to an Either in Scala. Free support for Scala 2 to 3 migration.

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