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June 27th, 2019, ISSUE 280

READING

Comonads for Life

We will look at Comonads, a type class closely related to Monads, firstly from an abstract point of view and progressing to a couple of practical, yet simple, examples of using Comonads for interesting applications.
Justin Heyes-Jones (@justinhj)
TypeSafe journey using Scala

A quick book on Scala Type System.
Harmeet Singh (@singh_harmeet13)
Scala programming language wins SIGPLAN award

According to the SIGPLAN award committee, “Scala is one of the few programming languages from academia that has had a significant impact on the world as well as on programming languages research."
Shapeless' HLists and how to traverse them

Learn how to achieve working sequence and traverse implementations for any HList and any Applicative.
Yannick Heiber
How to work with JSON in Scala

This tutorial introduces you to the basics of working with JSON in a Scala program, using the uPickle library.
Li Haoyi (@li_haoyi)
cleanframes  - data cleansing library for Apache Spark!

cleanframes is a library that aims to automate data cleansing in Spark SQL with help of a generic programming.
Dawid Rutowicz

PRESENTATIONS

Killing the unit test

In this talk, I’ll explain what Property-based testing and Law testing are, and share some concrete examples from the work we do in BigPanda.
Dor Sever (@dor_sever)

EVENTS

LX Scala & Reactive, Lisbon, Portugal, 4th - 5th July

Use promo code scalatimes_ to get a 40% discount for our readers!
LX Scala & Reactive (@lx_scala)
Lambda World, Cádiz, Spain, October 17th - 18th

Use our link to get a special discount for Scala Times readers!
Lambda World (@lambda_world)
BeeScala, Ljubljana, Slovenia, November 21st - 21rd

Don't miss your ticket for this unique conference!
BeeScala (@BeeScalaConf)

RELEASES

http4s-jdk-http-client

JDK 11+ http client implementation for http4s clients.
stateful-serverless

Research into Stateful Serverless With Akka, Knative, and gRPC.
Lightbend (@lightbend)
cats-retry

A library for retrying actions that can fail.
cats-retry contributors
zio-saga

A library that helps to implement Saga Pattern in purely functional way.
Vladyslav Kopaniev

VARIA

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