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August 13th, 2020, ISSUE 339

READING

Scala Knowledge Bits Archives

A series of short exercises (published successively), so that you can slowly build up your Scala knowledge!
Leo Benkel (@LeoBenkel)
Functional Effects with ZIO

In this article, I will try to explain what functional effects are and what are the benefits of using them.
Aleksandar Skrbic (@skrbic_a)
Experiment with Loom

A detailed description of project Loom and its potential benefits.
Daniel Spiewak (@djspiewak)
Building a Reactive, Distributed Messaging Server in Scala and Akka with WebSockets

Here is how to implement a messaging system using the WebSocket API - a standard API for client-server communications - on top of Akka HTTP, streams, and typed actors in Scala.
Nimrod Sadeh
Auto publish sbt plugin from Travis CI

In this post, we'll try to automate the release of an sbt plugin using Ólafur's olafurpg/sbt-ci-release.
Eugene Yokota (@eed3si9n)
Scala String Interpolation

Do you know all different types of interpolators?
Pradeep Mishra
Running Postgres integration tests easily with TestContainers and ZIO Test

In this short post, I’ll explain how to integrate Testcontainers (the Scala flavor) to play nicely with ZIO Test, showcasing some of the great composability features ZIO provides.
Igal Tabachnik (@hmemcpy)
Type-Level Programming in Scala, Part 1

You'll learn to use the power of the Scala compiler to solve problems for you and to validate properties of types.
Daniel Ciocîrlan (@DanielCiocirlan)
What's Ap with zio-prelude?

At this point I believe Prelude is a very interesting new addition to the Scala functional programming library ecosystem. Those experienced with the Haskell-like way of doing things will probably find its way of doing things pretty strange at first, and I don’t know how long that feeling will last.
justinhj (@justinhj)
Combining Purely Functional Property Based and Docker Integration Tests in ZIO

This article explains how to elegantly spin up Docker for property based tests and cleanup test cases making use of ZIO’s ZManaged.
Arjun Dhawan
Top Link of July: Thinking With Types

This series really captivated our readers last month, make sure you check it out.
Alvin Alexander (@alvinalexander)

PRESENTATIONS

Tagless Final - Part 5 - core (The Big Rewrite - Part 1)

In this video we will start the big rewrite of our todo application into the Tagless Final style. We will only work on the core layer of our application and thus only require Functor and Applicative.
DevInsideYou (@DevInsideYou)

EVENTS

Essential Effects US, August 31th - September 2nd, 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 Scala Fundamentals, September 1st-3rd, Online Course

Discount applies with the code: SCALATIMES, this time 20% off!
Ziverge (@zivergetech)
FP in the City Virtual Conference, September 10th

FP in the City Conference is for anyone who is passionate about learning and sharing their Functional programming knowledge.
Signify (@Signify_Tech)
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 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)
African Scala Development Program

Jon Pretty and John de Goes are offering a series of free premium Scala training courses to developers based in the African continent. Ziverge is looking for more teachers that would like to join the initiative.
Ziverge (@zivergetech)

RELEASES

scala-hedgehog

Hedgehog is a modern property-based testing system, in the spirit of QuickCheck (and ScalaCheck). Hedgehog uses integrated shrinking, so shrinks obey the invariants of generated values by construction.
scala-hedgehog contributors





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