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August 26th, 2021, ISSUE 393

READING

Incorporating Plotly into your Zeppelin notebooks with Spark and Scala

By using the presented approach, you can basically use any JS based graph library, as long as you handle preparation of data in a format your JS library needs.
Krzysztof Grajek (@grajo)
What is F[_] in Scala?

The F[_] simply means that F is a type parameter, which is itself a type constructor or a type with a type parameter.
A pure functional Primality Test in Scala

A well-performing and elegant solution.
Alessio Sartalin (@alessiosaltarin)
Using oracles to test the service and data layer

I hope this article gave you insight into how to test your data layer and have better service layer tests as well.
Mark de Jong (@mark_dj)

VIDEOS

Part 10 - core & persistence - TF to ZIO (The Big Rewrite) - Getting Started with ZIO in Scala3

In this video we will start the rewrite of the TODO app from Tagless Final to ZIO. We will finish the core & the in-memory persistence portions.
DevInsideYou (@DevInsideYou)

EVENTS

Advanced ZIO (SF - Bay Area Edition), Aug 30th - Sep 3rd

In this course, developers will explore the edges and corners of the ZIO library, taking a close look at the fine-grained interruption, custom concurrency structures, streams, application configuring and tuning, and metrics and monitoring. Use our link to get a 20% discount for Scala Times readers!
John A. De Goes (@jdegoes)
Functional Design (SF - Bay Area Edition), Sep 27th - Oct 1st

In this course, developers will learn how to write simple functional solutions to everyday business problems, without jargon and without type classes. Use our link to get a 20% discount for Scala Times readers!
John A. De Goes (@jdegoes)
Functional Scala Fundamentals (SF - Bay Area Edition), Oct 17th - 22nd

In this course, developers will learn the foundations of functional Scala, including language features that are unique to functional Scala, core concepts in functional programming, and proven techniques for developing robust and powerful applications in functional Scala. Use our link to get a 20% discount for Scala Times readers!
John A. De Goes (@jdegoes)
ZIO Hackathon, Oct 29th - 31st (CET)

Join this free event! We will share and learn about ZIO and related projects; chat about functional programming, functional Scala, and much more; work on fun projects; and get to know one another.
Ziverge (@zivergetech)
ScalaCon, November 2nd - 5th

ScalaCon is a collaborative project brought to you by the folks behind Scala eXchange and Scala Days! Join us for two conferences packed with over 43 talks, networking opportunities, virtual sponsor booths, and a safe space for talking about our favorite language, its past , present, and future. Use code SCTIMES10 for a special discount for our readers!
ScalaCon (@scalacon)
Build Web Servers with ZIO (SF - Bay Area Edition), Nov 15th - 19th

In this course, developers will use ZIO and best-in-breed libraries to rapidly construct web applications that are scalable; easy to test, refactor, and maintain; and which never leak resources or deadlock. Use our link to get a 20% discount for Scala Times readers!
John A. De Goes (@jdegoes)
Functional Scala, Dec 2nd - 3rd

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

Akka 2.6.16 released

Includes Durable State persistence, updates to sharding and shutdown, as well as other changes.
Akka Team (@akkateam)
ScalaChess

Chess engine in Scala 3 to validate movements, paths and checks of each movement loaded from external file resource.
Pablo Pérez García (@politrons)
setup-everything-scala

GitHub Action to prepare the environment for Scala & Scala.JS dev and testing.
David Barri (@japgolly)





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