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February 18th, 2021, ISSUE 366

READING

GraphQL Overview  -  Part2  -  Libraries

Sangria, or Caliban? What are the advantages and shortcomings of each of them for your Scala backend? And what should be used for the frontend?
Piotr Jasiak
Scala's List has a Secret

FP developers don’t care about resources, because of the expectation that resources should be handled by the runtime, but sometimes that isn’t possible or optimal — even dumb data structures are resources and sometimes need special resource management, for efficiency reasons.
Alexandru Nedelcu (@alexelcu)
Preventing Version Conflicts with versionScheme

Learn how sbt extensions and new sbt 1.5.0 features can help you to address dependency incompatibility issues.
Eugene Yokota, Julien Richard-Foy
Scala 3 Survey: The Conclusion

Time to sum up the results!
Prabhat Kashyap
Upgrade your Tagless Final with Tofu

Meet Tofu - a functional programming toolkit aimed at taming the complexity of Tagless Final approach.
Pavels Sisojevs (@scalamonster)
Mutability in Scala

This article focused on how to create mutable data structures in Scala that feel “natively” mutable. In a future article, I’ll discuss the why of mutability and how to use such a power wisely.
Daniel Ciocîrlan (@rockthejvm)
Explicit Nulls in Scala 3

Scala 3 has an optional feature which changes the Type hierarchy when enabled. Its called “Explicit Nulls” and when enabled via the flag -Yexplicit-nulls the language has a different way of working with null values.
Ayush Mittal
Programming in Scala, Fifth Edition

PrePrint PDF update of Programming in Scala is now available. Use code SCALATIMESPINS5 for 15% off. Offer expires 2/28/2021
Artima, Inc. (@ArtimaInc)
Top Link of January: Essential Effects

Adam's book was the most interesting link last month. Take a look at the early version if you'd like to master the world of effects in Scala!
Adam Rosien (@arosien)

VIDEOS

The Death of Tagless Final

John shows that while final tagless is easier to use than free monads, the technique suffers from a litany of drawbacks that push developers away from functional programming in Scala.
John A. De Goes (@jdegoes)

EVENTS

Unlock the Secrets of Scala 3 Macros, 24th February, online event (EST)

If we look deeper into Dotty Mirrors and inline, we discover an incredibly deep feature-set that elegantly solves a plethora of meta-programming problems.
Alexander Ioffe (@deusaquilus)
ZIO World, 11th March, Online Event

Join ZIO users and contributors for the inaugural ZIO World, which reveals ZIO 2.0, providing inspiration and new opportunities to create the most powerful reactive applications on the JVM. FREE of charge for all ZIO Contributors and Users.
Ziverge (@zivergetech)
Production-grade microservices with ZIO, 24th March, online event (GMT)

In this talk, Itamar will share from his experience in running microservices-based on ZIO in production: resilient, Kubernetes-friendly structuring; cloud-native observability with logs, metrics and telemetry, and modern ways of service communication.
Itamar Ravid (@itrvd)
Practical Functional Programming with Typescript workshop, 5th - 7th May

20% off for Scala Times readers!
Matechs, Ziverge

RELEASES

Scala 3.0.0-RC1

This release brings some last-minute polishings, clean-ups and changes before the big release. There were a few language changes to improve the user experience, as well as the polishings of the metaprogramming framework. We have also worked on the issues that had to be fixed before the stable release.
Scala contributors
Algebra 2.2.0

This repo represents an attempt to unify the basic algebraic type classes from Spire and Algebird. This release is binary compatible with previous releases in the 1.x and 2.x series and introduces support for Scala Native (contributed by @arashi01).
Alebra contributors
cats-effect v3.0.0-RC1

Cats Effect 3.0.0-RC1 is the first release candidate for 3.0.0.
cats-effect contributors





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