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August 13th, 2021, ISSUE 391


Spark ML hyperparameter tuning

Learn about CrossValidator and other interesting nuances of Spark.
Krzysztof Grajek (@grajo)
Friction-less Scala

Our plan is simple: to find and name the areas where developers experience friction, and start projects to address these pain points.
VirtusLab (@VirtusLab)
Number (part 1)

This article (part 1) is about the fuzziness of Number (a way to determine if x1 and x2 can be considered the same with a probability of p).
Robin Hillyard (@Phasm1d)
ZIO Prelude

ZIO Prelude provides functional abstractions and data types to solve common problems in application development. Enjoy the freshly released documentation!
Ziverge (@zivergetech)
Announcing Data Times

We're lunching a ScalaTimes sibling project: Data Times! Great team, drawing from the experience of curating ScalaTimes for the past years. Subscribe for news on Big Data, Machine Learning and Stream Processing!
SoftwareMill (@softwaremill)


ZLayer DSL - Getting Started with ZIO in Scala3

In this video we will continue implementing our own version of ZIO. In this one we introduce the ZLayer DSL that allows us to create dependency graphs without using for comprehensions.
DevInsideYou (@DevInsideYou)


Advanced ZIO (SF - Bay Area Edition), Aug 30th - Sep 3rd

In this course, developers will explore the edges and corners of the ZIO library, taking a close look at the fine-grained interruption, custom concurrency structures, streams, application configuring and tuning, and metrics and monitoring. Use our link to get a 20% discount for Scala Times readers!
John A. De Goes (@jdegoes)
Functional Design (SF - Bay Area Edition), Sep 27th - Oct 1st

In this course, developers will learn how to write simple functional solutions to everyday business problems, without jargon and without type classes. Use our link to get a 20% discount for Scala Times readers!
John A. De Goes (@jdegoes)
Functional Scala Fundamentals (SF - Bay Area Edition), Oct 17th - 22nd

In this course, developers will learn the foundations of functional Scala, including language features that are unique to functional Scala, core concepts in functional programming, and proven techniques for developing robust and powerful applications in functional Scala. Use our link to get a 20% discount for Scala Times readers!
John A. De Goes (@jdegoes)
ZIO Hackathon, Oct 29th - 31st (CET)

Join this free event! We will share and learn about ZIO and related projects; chat about functional programming, functional Scala, and much more; work on fun projects; and get to know one another.
Ziverge (@zivergetech)
ScalaCon, November 2nd - 5th

ScalaCon is a collaborative project brought to you by the folks behind Scala eXchange and Scala Days! Join us for two conferences packed with over 43 talks, networking opportunities, virtual sponsor booths, and a safe space for talking about our favorite language, its past , present, and future. Use code SCTIMES10 for a special discount for our readers!
ScalaCon (@scalacon)
Build Web Servers with ZIO (SF - Bay Area Edition), Nov 15th - 19th

In this course, developers will use ZIO and best-in-breed libraries to rapidly construct web applications that are scalable; easy to test, refactor, and maintain; and which never leak resources or deadlock. Use our link to get a 20% discount for Scala Times readers!
John A. De Goes (@jdegoes)
Functional Scala, Dec 2nd - 3rd

Functional Scala 2021 returns for another year of great talks, familiar and fresh spaces, and positive energy around the power of functional Scala for delivering compelling solutions to the toughest technology problems. Use promo code SCALATIMES10 for a discount for our readers!
Functional Scala (@FunScala2021)



Site and E-book Generator and Customizable Text Markup Transformer for sbt, Scala and Scala.js.
Jens Halm (@_planet42)
fs2 v3.1.0

New support for Node.js, and some optimizations/improvements.
fs2 contributors
http4s v1.0.0-M24

This release adds support for Scala.js, including an Ember client and server, serverless apps, a browser client backed by fetch, and browser service worker apps. This is the first significant divergence from the 0.23 line since it was forked off an earlier 1.0 milestone. It is not binary compatible with 0.23.x or 1.0.0-M23.
http4s contributors

Declarative bidirectional codecs for DynamoDb AttributeValue, SDK 2
dynosaur contributors

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