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November 7th, 2019, ISSUE 299

READING

Kleisli Category - From theory to Cats

A tutorial showing why Kleisli Category is a category naturally associated to any Monad T.
Krzysztof Grajek (@grajo)
sttp - simple, type-safe API for defining HTTP requests

Your favorite Scala HTTP client in a short Q&A session.
Maria Wąchal (@wachal_maria)
Presto with Doobie

How to query presto with doobie and then run some effectful code with the entries?
Martin Lechner (@m4nl5r)
Lambda World 2019

Highlights from European edition of the event - Cadiz.
Yannick Gladow (@y_gldw)
Speeding up time with Zio TestClock

The first part of a series about simulating and analyzing IoT events using Zio Streams.
Tim Pigden
Simulating IoT Events - with Zio Streams

The second part of a series about simulating and analyzing IoT events using Zio Streams.
Tim Pidgen
Permutive Community Engineering, October 2019

What's new in Sangria, Circe and other opensources contributed by Permutive community engineering team.
Travis Brown (@travisbrown)
Review PolyNote 

Some views and opinions about Netflix's PolyNote.
Korkrid Kyle Akepanidtaworn
A fully reactive ad serving platform using Scala & Akka-Streams

How Tubi TV team switched to Scala, Akka & Akka-Stream.
Marios Assiotis
Organize your data lake using Lighthouse

An opensource library with the aim of providing a way to organize your data lake and your spark jobs in an extendable and modular format.
Gergely Soti
Why I like Scala

What's not to like?
Ryan Berckmans (@RyanBerckmans)
"Functional Programming in Scala" and other great Manning books with a special discount!

An exclusive discount for our readers! Use promo code nltimes40 and get a 40% discount for all Manning products in any format!
Manning Books (@manningbooks)

EVENTS

Motivating Scala, November 20th, Reston, VA (USA)

Tyler Horton, Principle Software Engineer, will present Motivating Scala. There will be opportunities for networking and asking questions before and after the presentation.
Scala DC - MD - NOVA
BeeScala with 30% discount, Ljubljana, Slovenia, November 21st - 21rd

Use promo code scalatimesfriend to get a 30% discount for Scala Times subscribers!
BeeScala (@BeeScalaConf)
Tech Triveni, IIC Delhi, India, November 23rd - 24th

Grab special 10% discount code for Scala Times readers: TechTriveni10
Tech Triveni
ScalaConf.ru, Moscow, Russia, November 26th

Get ready for this exceptional event in Russia!
ScalaConf.ru
Lambda Days, February 13th -14th 2020, Kraków, Poland

Call for talks and very early bird tickets are both open! Full paper submission by November 15th, draft paper submission by January 13th (we strongly suggest the first deadline).
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)

RELEASES

Akka 2.6.0 Released

New APIs with type-safety for Akka Actors, better stability for Akka Cluster with Artery, and improved serialization.
Akka Team (@akkateam)
mdoc v2.0.0

Breaking change: code fences are now by default wrapped in classes instead of objects.
Ólafur Páll Geirsson (@olafurpg)
Castor

A lightweight, typed Actor library for Scala and Scala.js, making it very easy for you to define concurrent data pipelines or state machines.
Li Haoyi (@li_haoyi)
effects-without-monads-but-with-dotty

How to deal with effects... in Dotty.
Julien Richard-Foy (@julienrf)
Announcing Dotty 0.20.0-RC1

with starting indentation blocks, inline given specializations and more.
Dotty contributors

VARIA

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