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March 10th, 2023, ISSUE 472


Contribution Equals Impact

Towards a Responsible, Sustainable, and Resilient Open Source Ecosystem for Scala.
Johanna Reichen
Scala Center's five-year impact report

The report is finally here, showing crucial stats on the vibrant job market, simplified user experience, responsible stakeholders, and growing community.
Scala Center (@scala_lang)
ZIO Streaming Applications, Transformation, and Error Handling

In this blog, we have learned why we need streaming its use cases. How we can create the dummy stream and what is the operation available on a stream. How we can handle the failure case retry and use a fallback.
Amit Kumar
Scala case class comparison using diffx

In this article, I want to show some of the nice features of this library for comparing complex data structures with ease.
Yadu Krishnan (@yadukrishnank)
Proxy large messages via S3 with pass4s

In the previous post we have learned how pass JSON and XML messages via the SNS/SQS using pass4s. This time we’ll focus on another problem, often faced when implementing messaging in backend systems. We’ll learn how to handle large messages.
Michał Pawlik


Type-Level Programming in Scala: A Hardcore Tic-Tac-Toe

This video is a Tic-Tac-Toe in Scala, at the type level. You will learn how to program at the type level with givens, in a way that specifies constraints that the compiler should solve.
Daniel Ciocîrlan (@rockthejvm)


Scalar 2023, March 23rd-24th, Warsaw, Poland

Your favourite Scala conference is back!
SoftwareMill (@scalarconf)
Call For Proposals - ZIO World 2023

Submit your talk and join the lineup!
Ziverge (@zivergetech)
ZIO World, April 21st, Lisbon, Portugal (discount!)

The hybrid third edition of ZIO World showcases the power, performance, and productivity of ZIO 2 and its growing ecosystem. Use our exclusive link to get a 10% off for Scala Times readers!
Ziverge (@zivergetech)
Scala Days, June 4th-7th (Seattle, USA), Sept 11th - 12th (Madrid, Spain)

This year’s Scala Days marks the conference’s return since it was put on hold in 2020. This year we’re happy to host in Seattle, WA, in the US, and Madrid, Spain.
Scala Days (@scaladays)
10% discount for the Scala 3 Metaprogramming (ALL-NEW) course for our readers!

Use code SCALATIMES10off and enjoy the course!
John A. De Goes (@jdegoes)
10% discount for Functional Scala, Nov 30th - Dec 1st, London

Use code ScalaTimesFS2023 and get our exclusive discount!
Ziverge (@zivergetech)


zio-config 4.0.0-RC11

Another set of improvements and bugfixes.
zio-config contributors
tapir 1.2.9

Improve the efficiency of request handling in ZIO Http & Play, AWS CDK support, and many more improvements.
tapir contributors
Quine 1.5.2

Quine is a streaming graph interpreter; a server-side program that consumes data, builds it into a stateful graph structure, and runs live computation on that graph to answer questions or compute results. This release introduces several new functions and procedures to Quine’s Open Cypher implementation and also resolves scope issues with some CREATE and MATCH possibilities.
Quine Contributors
Metals 0.11.11

Support for Scala 3.2.2, semantic tokens, new inline value code action, expanded workspace symbol search to include fields, and more.
Metals contributors

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