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August 15th, 2024, ISSUE 545

READING

ZIO-like dependency injection using implicit resolution

By using Providers modeled after ZLayer, it is easier to separate the DI mechanism from our service definitions and provide alternate versions of the same dependency for different contexts. Nevertheless, there is still a fair amount missing that we get in mature DI frameworks like ZIO's.
John Hungerford
The Mechanics of Mitigation

Another part of the series about safe error handling with constructs provided by Soundness.
Jon Pretty (@propensive)
Publishing test traces to Grafana using otel4s and weaver

Let's explore how we can publish test traces to Grafana Cloud using otel4s and weaver while running tests on GitHub Action.
Maksym Ochenashko
Announcing Decisions4s: When Ifs Are Not Enough

The next time you find yourself struggling with complicated conditional logic, know that you have new tools at your disposal!
Voytek Pituła (@Krever01)
State of structural typing support in Scala 3.3.0

Scala's type system is primarily based on nominal typing. Scala 3 introduces a special type, Selectable, which provides an infrastructure for structural typing. Karlsson and Haller proposed improvements to Selectable to support extensible records. In this paper, we review several Scala 3 projects that involve structural typing. We find that their implementation or usability would benefit from the extensible records proposal from Karlsson and Haller. We investigate the remaining common challenges when working with structural types. In particular, we identify that a dedicated syntax for both record types and record literals would be the most beneficial addition to the language.
Julien Richard-Foy (@julienrf)

EVENTS

Building Better Open Source with John A. De Goes, every Fri until September 2nd, Online event

Want to learn how open source software is made, or maybe get some help improving existing OSS? Then mark your calendars for Friday, the next Zymposium, 12 noon - 1pm Eastern Time.
Scala Portugal
Lambda World. Oct 2nd - 4th, Cadiz, Spain

Don't miss he largest Functional programming event in South Europe!
Lambda World (@lambda_world)
Scala.IO, Nov 7th-8th, Paris

This edition brings us together in Paris for two days, with a multi-session structure and a large community space. With a great venue, wonderful speakers, and a lot of surprises, we are looking forward to meeting you there!
Scala.IO (@ScalaIO_FR)

VIDEOS

Scala Space Podcast: Scala 3 Migrations

In this episode we will discuss the realities of Scala 3 migration of large software products with Matthieu Baechler of Rudder.io and Łukasz Krenski of MeWe.com.
Matthieu Baechler, Łukasz Krenski, Łukasz Biały

RELEASES

scalac-profiling 1.1.0

When compile times become a problem, how can Scala developers reason about the relation between their code and compile times?
scalac-profiling contributors
snapshot4s

A library for snapshot testing with built in support for weaver and munit.
snapshots4s contributors
Laminar v17.1.0

New Airstream features: splitting Vars, and zooming into Vars without an owner. Also, stickers!
Laminar contributors
scala-cli 1.4.3

This release is a hotfix for 1.4.2, which brings environment variable help, fixes, and updated dependencies.
scala-cli contributors





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