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January 9th, 2020, ISSUE 308

READING

Towards more functional Play  -  Part 1

The fun of functional coding in Play. The first part of miniseries.
Krzysztof Grajek (@grajo)
ZIO environment meets constructor-based dependency injection

The overview of ZIO environment.
Adam Warski (@adamwarski)
How-to run tests in parallel with sbt

How to run tests and speed up testing on a Spark project.
Yann Moisan (@YannMoisan)
Monocle 3.x

A new release, complete rewritten, focused on Scala 3.
Julien Truffaut (@JulienTruffaut)
Learn myself some Scala 3, episode 4: strict equality

The introduction to one of the features of the language.
Heiko Seeberger (@hseeberger)
5 pitfalls to avoid when starting to work with ZIO

Lessons learned by OOP programmer.
Natan Silnitsky (@NSilnitsky)
Scala Langage Forum tread

The cake’s problem, dotty design and the approach to modularity.
Scala Community
Wiring everything up for unit testing with Scalatest + Mockito + ArgumentCaptor

Unit tests setup is not so easy as it looks.
Manuel Rodríguez
Toggl4s - Feature toggle service with etcd backend

The introduction to the feature toggle service for microservices.
λ.eranga (@itseranga)
Scala 101: a beginner’s guide to the scalable language

Are you looking to learn Scala?
The Educative Team
Error handling in Scala

Use non-exception types for expected errors and exceptions for unexpected errors.
Pierre Jambet (@pierre_jambet)
Type-Safe REST services in Scala with Http4s & Cats-IO

The walk through the basic steps required to get started with using Http4s, to build a REST service interacting with a database system, using Hikari Connection Pool.
Akash Srivastava
Demystifying Functional Programming (Part 2)  -  The need for immutability

What are Immutability and Mutability?
Harshpreet Singh (@909harsh)
What is an ADT (Algebraic Data types)?

The essential knowledge for every FP programmer.
Edward Huang

EVENTS

f(by), January 25th 2020, Conference on functional programming in Minsk, Belarus

Use the promocode "fbytoScalaTimes" to get 10% off.
F(by) Conference 2020 (@funcby)
Scala in the City, January 30th 2020, London

It’s the FIRST Scala in the City of 2020 and we’re off to the NEW ITV space. Our guest speaker Wiem Zine Elabidine @WiemZin will be giving us a look into ZIO In Real World.
Signify Technology (@Signify_Tech)
Lambda Days, February 13th -14th 2020, Kraków, Poland

Draft paper submission by January 13th.
Lambda Days (@LambdaDays)
Scalar, March 19th-21st, 2020, Warsaw, Poland

Get ready for one of the biggest Scala conferences in Europe!
SoftwareMill (@scalarconf)
ScalaUA, April 3th-4th, 2020 Kyiv, Ukraine

CFP is on! Wholesale 10+ tickets are available till 2020.04.02.
ScalaUA (@ScalaUA_Conf)

RELEASES

scalajs-react 1.5.0

React on Scala.JS now supports Scala 2.13.x.
David Barri (@japgolly)
delta

An open-source storage layer that brings scalable, ACID transactions to Apache Spark™ and big data workloads.
Shixiong Zhu
fs2: I/O

The library provides support for performing input and output on the JVM (not Scala.js).
fs2 Community
context-applied

A Scala compiler plugin that gives a handle to the value that has the abilities specified by type parameter context bounds.
Yura Slinkin
zio-google-cloud-oauth2

Google Oauth 2.0 for Scala and ZIO.
Google Oauth 2.0 for Scala

VARIA

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