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May 23rd, 2024, ISSUE 533

READING

Apache Pekko becomes a Top-Level Project

Leading framework for building applications that are concurrent, distributed, resilient and elastic graduates to TLP.
Apache Software Foundation
Scala Meetup at Evolution

A few weeks ago, Functional Software organized a Scala Meetup together with Evolution.
Functional Software Stockholm
Purify Your Tests: 2 Parametric, 2 Declarative

In the last part we learned how to purify our tests using type parameters. In this and following parts we'll see some further benefits of adding type parameters this way.
Daniel Beskin
Introducing TARP Stack – Tapir, React and PostgreSQL

I'm really excited to demonstrate how productive you can be with this tech stack. Let's start building, shall we!
James Jiang (@jamesjg_)
IO effect tracking using Ox

The broader goal of the IO capability feature is for method signatures to be truthful and specify the possible side effects, failure modes, and timing of methods in a reasonably precise and practical way.
Adam Warski (@adamwarski)
Announcing Business4s: a new value proposition for Scala

We have an incredible language and rich ecosystem. Now it’s time to build on top of that.
Voytek Pituła (@Krever01)

EVENTS

ScalaMatsuri, June 7th-9th, Tokyo, Japan

The largest international Scala conference in Asia.
ScalaMatsuri (@ScalaMatsuri)

VIDEOS

Uncovering the benefits and challenges of ZIO2 and Scala 3 at Wolt

Wolt has a vibrant Scala community where software engineers use a variety of patterns and frameworks to build services. One common pattern is using ZIO2 and Scala 3 to build small, simple, and could-native microservices quickly. In this talk, Thomas will go through the benefits and challenges of this approach as well as how the approach fits into Wolt's infrastructure and co-exists with other approaches.
Thomas Harper
Explore your Smithy models with the CLI

This video outlines the capabilities of the Smithy CLI, and goes in depth on using it to get information about your shapes with selectors and the model AST.
Jakub Kozłowski (@kubukoz)
Exploring build caching: a practical overview

Recording from Scalar Conference 2024. In this talk, we will start with the basics, understanding what build caching is and why it can be a bit tricky to handle in real projects. Looking at a quick history of build caching in Scala, we will see how it has evolved and how you can leverage existing build caching capabilities in sbt today. I’ll share some practical insights on making the most of build caching when using sbt. Finally, we’ll look at what the future holds for build caching with sbt 1 and 2 and see how you can prepare for it.
Martin Duhem (@mnduhem)
The debatably Free monad

The purpose of this talk is to re-invent `Free` from first principles. Along the way, we'll touch on a variety of useful topics: defunctionalisation, interpretation, and how to figure out how to implement thorny functions by merely looking at them as paths in a graph.
Nicolas Rinaudo (@NicolasRinaudo)

RELEASES

Akka 24.05

Key ares: Zero Trust, Security and Compliance; Performance through Database sharding, Java 21 is now certified, Akka Edge Rust and enhancements for Edge use cases.
Lightbend (@lightbend)
munit 1.0.0

This was long time coming and finally we are out of milestones and ready for a new chapter of munit. New features: async support for fixtures, introduce "strict equality" mode for asserts, make printers more easily configurable, diff module extracted to a separate module.
munit contributors
chimney 1.0.0

Release 1.0.0 is the culmination of 7 years of development. Congratulations!
chimney contributors
sttp-openai 0.2.0

New client version switches to the v2 OpenAI API.
SoftwareMill (@softwaremill)
Metals 1.3.1 - Thallium

Resolve classpath lazily in Bazel, replace slowTask with LSP progress, support for starting Metals for a single file without a workspace.
Metals contributors
Soundness: Wisteria

Wisteria is a generic macro for automatic materialization of typeclasses for datatypes composed from product types (e.g. case classes) and coproduct types (e.g. enums). It supports recursively-defined datatypes out-of-the-box, and incurs no significant time-penalty during compilation.
Jon Pretty (@propensive)
neotype 0.2.13

Now with support for Caliban and Chimney.
Pierre Ricadat (@ghostdogpr)
kyo 0.10.0

This version introduces new major features and important fixes!
kyo contributors
urlopt4s

Allows you to remove ad/tracking query params from a given URL in Scala.
Daniil Sivak
sttp-oauth2 0.19.0

The project is now under the wings of Polyvariant, congrats!
Polyvariant
virgil-kyo

Virgil is a functional Cassandra client built using Kyo, Magnolia and the Datastax 4.x Java drivers for Scala 3.
Calvin Lee Fernandes (@cal_fern)
sus4s

A Direct-Style Scala Wrapper Around the Structural Concurrency of Project Loom.
Riccardo Cardin (@riccardo_cardin)
Soundness: Quantitative

Quantitative represents physical quantities with a generic Quantity type, an opaque alias of Double, which statically encodes the value's units in its type parameter. This provides all the desirable homogeneity constraints when combining quantities, with the performance of Doubles, and without compromising on intuitive syntax for arithmetic operations. Quantities can be multiplied and divided arbitrarily, with new units computed by the compiler, and checked for consistency in additions and subtractions.
Jon Pretty (@propensive)





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