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April 22nd, 2021, ISSUE 375

READING

herding cats - FunctionK

A handy tool to work around the limitations of unavailable higher rank polymorphism.
Eugene Yokota (@eed3si9n)
A ZIO cheatsheet

Note that almost all of these initial examples come from the ZIOnomicon book and the video that I link to later.
Alvin Alexander (@alvinalexander)
Programming in Scala, Fifth Edition

PrePrint PDF update of Programming in Scala is now available. Use code SCALATIMESAPRILPINS5 for 15% off. Offer expires 4/30/2021.
Artima, Inc. (@ArtimaInc)

VIDEOS

Dealing with Optional Values

The Scala functional subset consists of using FP functions everywhere in our codebase, plus two additional requirements. In this video, we’ll cover the first.
Julien Truffaut (@TheFpTower)
Best Features of Scala 3 for Scala.js

In the fourth video in the "Let's talk about Scala 3" series, Sébastien Doeraene, the Technical Director of the Scala Center and author of Scala.js, walks us through his top four features of Scala 3 for Scala.js.
Sébastien Doeraene (@sjrdoeraene)

EVENTS

ZIO Meetup SF, April 22nd

Join us on the 22nd of April at 5 pm PST to listen to John A. De Goes speaking about The ZIO of the Future & Girish Kolanthra speaking about Capital One’s Scala Journey.
Ziverge (@zivergetech)
Scala 3 Release Party, April 24th

Be there for the final countdown! A virtual event with free registration. Starts 6:00 PM.
sphere.it (@sphere_it_)
Practical Functional Programming with Typescript workshop, May 5th - 7th

20% off for Scala Times readers!
Matechs, Ziverge
ScalaCon, May 18th - 21st. and Nov. 2nd - 5th

Brought to you by ScalaDays and Scala eXchange, ScalaCon is a series of virtual conferences designed to bring the Scala community closer together.
ScalaCon (@scalacon)
Functional Scala, Dec 2nd

Functional Scala 2021 returns for another year of great talks, familiar and fresh spaces, and positive energy around the power of functional Scala for delivering compelling solutions to the toughest technology problems. Use promo code SCALATIMES10 for a discount for our readers!
Functional Scala (@FunScala2021)

RELEASES

Scala 3.0.0-RC3

Some critical bugs were discovered during the previous release cycle, whose fixes had to be included in 3.0.0 stable. Therefore, we are having RC3 to give the community time to test our fixes.
Metals v0.10.2

This release mainly adds support for Scala 3.0.0-RC3 as well a couple of smaller improvements.

VARIA

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  1. Scala Times Issue #375

    A ZIO cheatsheet. Programming in Scala, Fifth Edition. Dealing with Optional Values. Best Features of Scala 3 for Scala.js. ZIO Meetup SF, April 22nd.

  2. Scala Times Issue #374

    Image editing with Monads. Fire-and-Forget in Cats Effect. Programming in Scala, Fifth Edition. Scala 3: Extension Methods. The Scala3 feature I'm most excited about!.

  3. Scala Times Issue #373

    Context is King. How to build an Android app in Scala 2.13. Revisiting Scala Native performance. Scala 3 in sbt 1.5. Programming in Scala, Fifth Edition.

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    Introducing ZIO Http. Automatic UI generation with Scala 3's type class derivation. Scala is a Maintenance Nightmare. The Tagless Final Pattern in Scala. Scala3-migrate: a tool making it easier to migrate to Scala 3.

  6. Scala Times Issue #370

    The importance of Scala.js. Scala on Android. JDK 16's Top 5 for Scala. Many happy early returns. Zio quick read: Extracting the executor for a service.

  7. Scala Times Issue #369

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  15. Scala Times Issue #361

    Scala 3: Dependent Types, Part II. Configuring and suppressing warnings in Scala. Threading best practices in Cats Effect. Scala 3 Metaprogramming by Example by Adam Warski. What the Functor?.

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  19. Scala Times Issue #357

    Join the Scala Discord Server!. Enforcing Semantic Versioning with sbt-strict-update. Kafka Cron using wix/greyhound. Scala Filesystem Operations (paths, move, copy, list, delete) . Metals 2020 Review.

  20. Scala Times Issue #356

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  21. Scala Times Issue #355

    Scala 3 Developers' Survey. Four new features of Scala 2.13 releases that you probably missed. Scala 3: Path-Dependent Types, Dependent Methods and Functions. Message-based Parallelism with Actors. IntelliJ Scala Plugin 2020.3 Is Out!.

  22. Scala Times Issue #354

    Scala 3 Developers Survey. A case for akka-coordination lease. Monad transformers and cats  -  3 tips for beginners. Forward Compatibility for the Scala 3 Transition. Mirror, Mirror on the Wall, Who’s the Genericioust of Them All?.

  23. Scala Times Issue #353

    Scala 3 Developers Survey. Managing Database Migrations in Scala. One year with Akka 2.6. Best practice for natural Ordering. Event-driven railway network based on Pulsar.

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    Domain-Driven Design with FP in Scala. Explicit term inference with Scala 3. Keep alive for JMS connections. Why You Should Learn Scala in 2020?. A step-by-step guide for debugging memory leaks in Spark Applications.

  25. Scala Times Issue #351

    Autorecovery for (JMS) Streams. ZIO-AWS with ZIO Query. Implementing Scala.js Support for Scala 3. Let’s Talk About the Scala 3 Indentation. Concurrency in Cats Effect 3.

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