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September 10th, 2020, ISSUE 343

READING

Underscores are Overloaded in Scala!

In this article I'll share almost all the places where you might see an underscore, so that you don't freak out when you see yet another one in a different context.
Daniel Ciocîrlan (@DanielCiocirlan)
Scala, React, and SSR (part 2)

This article will explain how to reclaim the speed, once again, by using scala-graal.
David Barri (@japgolly)
Scala Africa Development Program Has Launched

Designed to bring free, high-quality education to JVM and Scala developers on the African continent.
Ziverge (@zivergetech)

PRESENTATIONS

Tagless Final - Part 9 - persistence-postgres-skunk (The Big Rewrite - Part 5)

In this video we will begin bolting a postgres database on top of our todo app. We will use the Skunk library to accomplish that. This video discusses only commands & queries. The next video will finish the postgres layer.
DevInsideYou (@DevInsideYou)

EVENTS

Scala micro.sphere.it, September 15th

An evening with 3 great Scala presentations, including Martin Odersky!
VirtusLab (@VirtusLab)
Essential Effects EU, September 14th-16th, Online Course

Essential Effects introduces Cats Effect as a tool for building resource-safe and concurrent applications. If you self-identify as underrepresented or unemployed, we're happy to offer a 50% discount. Use discount code "scalatimes" for an additional 15% off.
Inner Product (@InnerProductLLC)
Functional Effects, September 23rd-24th, Online training

In this course, Scala developers will learn how to solve complex problems in asynchronous, concurrent programming using the ZIO library. Use code "ScalaTimes10" to receive 10% off at the checkout.
John A. De Goes (@jdegoes)
Virtual Scala, September 24th, Online Meetup

Talks: "Multi-Tenancy at Scale" by Sahil Anand, and "Using Aspects to transform your codes with ZIO Environment" by Adam Fraser. The meetup will take place online via GoToWebinar on the 24th of September, 2020 at 19:00 GMT+2.
Ziverge (@zivergetech)
Functional Scala CFP

The CFP closes on October 15th
Ziverge (@zivergetech)
Functional Design, October 20th - 22nd, Online training

In this course, developers will learn how to write simple functional solutions to everyday business problems, without jargon and without type classes. Use code "ScalaTimes10" to receive 10% off at the checkout.
John A. De Goes (@jdegoes)
The Rise of Loom and the Evolution of Reactive Programming, October 22nd, Online meetup

On Thursday, October 22nd at 5:00 PM John A. De Goes will be giving a talk to the online meetup of ZIO London.
John A. De Goes (@jdegoes)
Functional Data Modeling, November 18th - 19th, Online training

In this course, developers will learn how to use functional Scala to construct simple, precise, and flexible models of any business domain. Use code "ScalaTimes10" to receive 10% off at the checkout.
John A. De Goes (@jdegoes)
ZIO Hackathon, November 20th-21st, online event

Attendees of ZIO Hackathon 2020 will be able to attend talks on ZIO projects from leading open source contributors, as well as receive expert mentorship in contributing features, bug fixes, and documentation enhancements to the ZIO ecosystem of libraries.
Ziverge (@zivergetech)
Functional Scala, December 3th-4th, London

Learn the critical topics you need to excel as a Scala developer, and celebrate the Scala programming language and community.
Ziverge (@zivergetech)
Scala 3 for Scala 2 developer, December 8th - 10th, Online training

In this course, developers who are already familiar with Scala 2.x will get a high-speed introduction to all the changes coming in Scala 3, including semantic changes, syntactic changes, new features, and dropped features. Use code "ScalaTimes10" to receive 10% off at the checkout.
John A. De Goes (@jdegoes)
Functional Scala Megapack (4 workshops)

Functional Effects + Functional Design + Functional Data Modeling + Scala 3 for Scala 2 developers. Use code "ScalaTimes10" to receive 10% off at the checkout.
John A De Goes (@jdegoes)

RELEASES

cats v2.2.0

This is the seventh major release in the Cats Effect 2.x lineage. Asyncrhonous tracing, Bracket Forwarders, Performance Improvements in Deferred, and no more import cats.implicits._!
cats contributors
cats-mtl 1.0.0

This release contains a full rewrite of… everything. It is not binary compatible with 0.7.x or any of the previous releases, nor is it source-compatible, but most of the changes should be relatively straightforward to adapt to on the usage side.
cats-mtl contributors
sbt 1.4.0-RC1

Build server protocol (BSP) support, sbtn: a native thin client for sbt, build caching and more!
sbt contributors
ninny-json

ninny-json is an experiment to look at what JSON type classes would look like if they made a distinction between absent JSON fields, and fields with null values.
Nathaniel Fischer
Weaver Test

A lean test-framework built on top of cats-effect and fs2
weaver-test contributors

VARIA

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