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December 25th, 2019, ISSUE 306

READING

2019 Scala Developer Survey

The Scala Center, the LAMP, and Lightbend would like to know more about your habits as a Scala programmers and to identify the pain points of your workflow.
Lessons Learned Building a Van Laarhoven Lens Library

This blog post is a write-up of a talk that I gave at London Scala User Group in November of 2019.
Joe Warren
A Glossary of Functional Programming

Over time, I’ve collected and converged on simple (but reasonably precise) pedagogical definitions for a range of functional concepts.
John A De Goes (@jdegoes)
Tips for moving from tut to mdoc

mdoc helps us be sure the code we describe works, no matter how often we update the text. It does this by typechecking and running the Scala source in our text.
Richard Dallaway (@d6y)
Notes on Category Theory in Scala 3 (Dotty)

In this article we’ll explore how we can encode several definitions from the book Category Theory and Applications by Marco Grandis and translate them into Scala 3 (Dotty).
Joan Pablo

EVENTS

Lambda Days, February 13th -14th 2020, Kraków, Poland

Draft paper submission by January 13th.
Lambda Days (@LambdaDays)
ScalaUA, April 3th-4th, 2020 Kyiv, Ukraine

CFP is on! Also: Super Early Bird tickets are available on website till 2019.12.31, and Wholesale 10+ tickets are available till 2020.04.02.
ScalaUA (@ScalaUA_Conf)
Scalar, March 19th-21st, 2020, Warsaw, Poland

Don't miss the CFP, open until Jan 1st! Get ready for one of the biggest Scala conferences in Europe!
SoftwareMill (@scalarconf)

RELEASES

full-scala-stack

An example multi-tier application that uses a full Scala stack (zio, scalajs, react, akka-http, slick)
Roberto Leibman
ScalaJack 6.2.0

ScalaJack is a low-friction serialization library for Scala supporting JSON, Json4s, delimited, and Mongo formats. New for 6.2.0 YAML support is now available. Also in this release is a new Converters object of implicit serialization conversions. Scala 2.12 is no longer supported.
Greg Zoller
Announcing Dotty 0.21.0-RC1

Eexplicit nulls, new syntax for `match` and conditional givens, and more.
Dotty contributors

VARIA

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