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April 26th, 2018, ISSUE 219

READING

A quick tour of build tools in Scala

sbt is not the end of the world. Discover mill, fury, cbt, and other options!
Manuel Bernhardt (@elmanu)
Towards Scala 3

Now that Scala 2.13 is only a few months away, it’s time to consider the roadmap beyond it. It’s been no secret that the work on Dotty over the last 5 years was intended to explore what a new Scala could look like. We are now at a stage where we can commit: Dotty will become Scala 3.0.
Martin Odersky (@Odersky)
CoRecursive: Graphql And Sangria

Oleg Illyenko is primary creator of Sangria, a graphql implementation used by Twitter, The New Yorks Times and many other companies. We discuss the problems that graphql solves, how sangria works and the problems of api design.
Adam Bell and Oleg Illyenko (@easyangel)
Using Redux with Binding.scala

I used Redux in a Polymer/ Typescript project and I really liked it. So I wanted to use it in my Binding.scala projects as well.
Pascal Mengelt
Testing Play Framework with H2 in-memory database

Testing our Play Framework code using a production-ready database is slow. That's why today we are going to review a simple approach we can use to speed up and simplify our integration tests using H2.
Pedro Vicente Gómez Sánchez (@pedro_g_s)
Simple example of using seeds with ScalaCheck for deterministic property-based testing

ScalaCheck 1.14.0 was just released with support for deterministic testing using seeds. Some folks have asked for examples, so I wanted to produce a Gist to help people use this feature.
Erik Osheim (@d6)

PRESENTATIONS

Scala - Your First Programming Language - Part 13 - Message Passing Style & The Birth of OO

Description: In the previous video we learnt about the environment model of computation, which is necessary because Scala as most languages allows assignment to variables. In this video we combine all the knowledge we have gathered so far and use it to derive an entire programming style called message passing style. We will derive it from the environment model of computation and eventually we will see how an entire paradigm is based on it.
DevInsideYou (@DevInsideYou)
Talks from Scalar Conference 2018

Updated with some new recordings.
SoftwareMill (@scalarconf)

EVENTS

WIN a ticket to Scala Days Berlin!

Simply send a blog you have written that you would like featured on our website!
Signify Technology (@Signify_Tech)
flatMap(Oslo), May 3-4, 2018, Oslo, Norway

Use this promo link for 5% discount! There is also an open source spree on the 2nd of May.
flatMap(Oslo) (@flatmaposlo)

RELEASES

cats-bio

A Bifunctorial IO Implementation for Cats based on standard cats.effect.IO.
Luka Jacobowitz (@LukaJacobowitz)
scalaz ioeffect

An effect monad for Scalaz 7.x.
ioeffect contributors
scalafmt 1.5.0

Robust and powerful auto-formatting tool for Scala. With improved RedundantBraces, handling of long `with` chains, incremental sbt plugin, new SortModifiers rule, fresh coat of paint on the website and more!
scalafmt contributors

VARIA

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