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September 6th, 2018, ISSUE 238


How to translate your API with Shapeless

Another success story about leveraging Shapeless to reduce boilerplate.
Michał Łosiewicz (@MichalLosiewicz)
A case to introduce Scala in a Java world

Using Scala will make developers naturally be constrained (by the APIs) and guided to the Functional Programming paradigm: this will improve the code quality and expand their mindset
Stéphane Derosiaux (@sderosiaux)
Are Scala Futures the past?

Scala Futures were a very good trampoline to highest standards provided by 3rd party libraries such as scalaz, cats, and monix.
Stéphane Derosiaux (@sderosiaux)
Kinds of types in Scala, part 3: embedding some more info in a type

Structural and refined types, Path-dependent types, type lambda, self-types, tagged types, phantom and literal types.
Mateusz Kubuszok (@MateuszKubuszok)
Effect Extensions Pattern

In this article, I would like to describe my approach for working with effect type conversions
Anatolii Kmetiuk (@AKmetyuk)
Dotty Type classes

This proposal is based on the dotty proposal by Martin Odersky and tries to address some of the perceived drawbacks from the functional programming Scala community.
Luka Jacobowitz (@LukaJacobowitz)
Http4s error handling with Cats Meow MTL

This is such an exciting time to be writing pure functional programming in Scala! The Typelevel ecosystem is getting richer and more mature, having an amazing set of libraries to solve business problems in an elegant and purely functional way.
Gabriel Volpe (@volpegabriel87)
From Scala app to Kubernetes, part 2

Notes on a project built for learning how to compose a modern pipeline.
Fabio Tiriticco (@ticofab)
This month at SoftwareMill we’ve learned

A collection of interesting lessons learned by our developers last month.
SoftwareMill (@scalarconf)
Chain – Replacing the List Monoid

Meet Chain - a new collection type with functional interface and very performant characteristics.
Luka Jacobowitz (@LukaJacobowitz)
Putting BDD in practice using Scala

This article aims to give a brief explanation about what BDD is and how it can be used to fill the information gap between stakeholders and development teams, ensuring everyone (technical or not) is involved in the project’s progress.
Bruno Ferreira
Top Link of August: Scala 3 as a new Programming Language

Let's bring back Sam's thoughts again in this remarkable article.
Sam Halliday (@fommil)


Homegrown Scala Collections - Part 3 - Just enough theory to get started with Sets

In this video we will cover the basics of the Set Theory, just enough to finally begin writing our own collections library and the first collections being well... Sets.
DevInsideYou (@DevInsideYou)


Lambda World Seattle, September 17th - 18th

Use promo code STLW18 for Scala Times readers to get 10% discount!
47 degrees (@47deg)
Lambda World Cádiz, Spain, October 25th - 26th, 2018

Use promo code STLW18 for Scala Times readers to get 10% discount!
47 degrees (@47deg)
Scala Italy, September 14th-15th, Florence

Use promo code SCALATIMES_U2N for a 10% discount for Scala Times readers!
Scala Italy (@ScalaItaly)
Win a ticket to Lambda World, Cadiz!

Enter the competition to win a free ticket.
Signify Technology (@Signify_Tech)
Scala Up North, Toronto, CA, September 28th-29th, 2018

Use our promo link and get a 10% discount!
Scala Up North (@ScalaUpNorth)
Scala in the City, September 20th, London

We are excited to announce we have two great speakers flying in from around Europe for this event, the first is Thomas Meijers on Kindly Typed and Pawel Szulc on A road trip with Monads: From MTL, through Tagless to Bio.
Signify Technology (@Signify_Tech)


Scala 2.13.0-M5

M5 is our feature-freeze release for 2.13. From here forward, we’ll close existing open loops but not embark on or accept new work.
Scala contributors

It mostly wraps the Ammonite Scala shell in a Jupyter kernel, with the addition of custom Jupyter-specific APIs. It is formerly known as jupyter-scala.
almond contributors

One enum type class to rule them all.
Mateusz Kubuszok (@MateuszKubuszok)
cats 1.3.0

12 API Enhancements, 1 Bug fix, 3 Code cleanups and 13 Documentation updates. Cats 1.3.0 is binary compatible with all previous 1.x Cats releases, i.e. its jar is a drop-in replacement for 1.0.1, 1.1.0 and 1.2.0 jars.
cats contributors
cats-effect 1.0.0

This is the eagerly anticipated 1.0.0 release of Cats-Effect! Binary compatibility will be maintained through the 1.x series, with new features introduced in minor releases. This release is not binary or source compatible with the previous 0.10 release.
cats-effects contributors


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