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March 21st, 2019, ISSUE 266


The RedMonk Programming Language Rankings: January 2019

Scala has a strong position, read the full report.
A monad is not a burrito

Here’s what a monad really is: a parametric type with a flatMap and a unit method.
Maxime Kjær (@maximekjaer)
Joins in Apache Spark - Part 3

Another part of the series with some interesting gotchas.
Scala sbt Project Directory Structure

a demonstration of creating a dummy Scala project from scratch.
Yunlong Wang
Scala Snippets #1: Instantiable Implicits

I hope this helps understanding implicits better and aids in using them elegantly, utilizing all the awesomeness it provides.
Manish Katoch
Scala Snippets #2: Dependent Types in Scala - A practical example

Let’s try to build our understanding of this paradigm using a trivial but a practical use case.
Manish Katoch
Open-sourcing the first OpenRTB Scala framework

Long story short: if you’re using Scala and dealing with Google Java OpenRTB structures, using Scala OpenRTB may well be your best choice.
Romain Lebran
AWS Lambda  -  How to Automate Your Spark Jobs on AWS Elastic Map Reduce (EMR)

An example of how to spin up an ephemeral EMR cluster and submit a spark job to run.
Scott Mandrell
A practical introduction to Spark’s Column

Frequently used simple, important and common column methods for effective dataframe/dataset manipulation.
Rob Norris joins Scala Center’s Advisory Board as a new Community Representative

Rob succeeds Lars Hupel in the Community Representative role. (Bill Venners continues as the other Community Representative.)
Scala Center (@scala_lang)


Abstraction and Learning with Runar Bjarnason

What is abstraction? Can we have a precise definition of abstraction that, once understood, makes writing software simpler? Runar has thought a lot about abstraction and how we can choose the proper level for the software we write.
CoRecursive (@corecursive)



In this video we will learn about most of the nitty gritty details of implicits - one of the most powerful and therefore dangerous features in Scala.
DevInsideYou (@DevInsideYou)


ScalaUA, Kiev, Ukraine, March 29-30

Use promo code ScalaTMS%_ScAlAUA-2019-29-30 for 20% discount for our readers!
ScalaUA (@ScalaUA_Conf)
Scalar, Warsaw, Poland April 5-6

Join the next edition of the largest Scala conference in central Europe!
SoftwareMill (@softwaremill)
flatMap(Oslo), May 8-9

Use promo code SCALATIMES for a discount for our readers!
flatMap(Oslo) (@flatmaposlo)
CFP for Lambda World, Cádiz, Spain, October 17th - 18th

Deadline for submissions is June 1st.
Lambda World (@lambda_world)
CFP & free ticket for BeeScala, 21-23 November, Ljubljana

Answer the question: "What is the idea behind the BeeScala name?", send your reply to info@bee-scala.org by 31st of March. For some lucky person, there's one free ticket waiting!
Bee Scala (@BeeScalaConf)
CFP for LX Scala & Reactive, Lisbon, Portugal, July 4th - 5th

Don't miss the CFP deadline which is May 1st!
LX Scala & Reactive (@LX_Scala)


Alpakka 1.0-RC1

1.0 is almost there, stay tuned!
Alpakka contributors (@akkateam)


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