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October 11th, 2018, ISSUE 243

READING

Introducing Scaladoc Tables

Scala 2.12.7 adds support for markdown tables in Scaladoc comments.
Janek Bogucki (@janekdb)
This month at SoftwareMill we’ve learned

Another month, another bunch of TMILs from our engineers.
SoftwareMill (@softwaremill)
Backoff and Retry Error-Handling for Akka Streams

Learn how to handle retries without restarting the whole stream.
Colin Breck (@breckcs)
Anatomy of functional programming

Basic notions of functional programming that I find myself explaining often lately into a series of articles.
Martin Menestret (@mmenestret)
Anatomy of an algebra

Functional programmers tend to talk a lot about algebras, so a good starting point would be to understand what an algebra is.
Martin Menestret (@mmenestret)
Anatomy of a type class

OOP and FP have two different approaches when it comes to data/behavior relationship.
Martin Menestret (@mmenestret)
Disambiguating 'this' in Scala, or what does 'self =>' mean?

This is a quick Scala tip on a somehow unknown feature of the Scala language, what I call self aliasing or unconstrained self type annotations.
Rui Batista (@ragb)
A comparison of functional data structures on the JVM

There are a number of implementations of functional data structures (also called "persistent" or "immutable" data structures) on the JVM, but to date there has been no serious attempt to compare them.
Zach Tellman (@ztellman)
Monads for functional programming in Scala

Implementation of examples from the paper "Monads for functional programming".
Daniel Berg
Mutation switching in Stryker4s

Scala developers can now use mutation testing to improve their tests!
Better type inference for Scala: send us your problematic cases!

A thread to ask for code samples where you feel that type inference should be able to do a better job.
Guillaume Martres
Migrating legacy data to Akka Persistence Event Store

Three different approaches with advantages and tradeoffs discussed.
Jakub Dziworski (@Jakub_Dziworski)
Top Link of September: Functional Programming for Mortals

A pay-what-you-want book about functional programming by Sam Halliday? No wonder this was the most visited Scala Times link in the previous month!
Sam Halliday (@fommil)

PRESENTATIONS

Homegrown Scala Collections - Part 8 - One Fold to rule them all

In this video we are going to learn about the father of recursive traversals - the mighty fold.
DevInsideYou (@DevInsideYou)

EVENTS

Lambda World Cádiz, Spain, October 25th - 26th, 2018

Use promo code STLW18 for Scala Times readers to get 10% discount!
47 degrees (@47deg)
Win tickets and a return flight to Scale By The Bay, San Fracisco

All you have to do is refer a Scala friend! Simply enter for the opportunity to be at Scale by the Bay by emailing us!
Signify Technology (@Signify_Tech)
Scala in the City, October 18th, London

This meetup will feature talks by Hubert Behaghel and John De Goes, feel welcome to join the meetup at the Sky offices.
Signify Technology (@Signify_Tech)
Tech Triveni, New Delhi, India, November 18th, 2018

Use code TechTriveni10 for a 10% discount for Scala Times readers!
Knoldus Inc. (@Knolspeak)
$100 discount for Functional Programming training by John De Goes, London, October 21th - 23rd, 2018

Use promo code 'ScalaTimes' and get a special discount for our readers!
Signify Technology (@Signify_Tech)

RELEASES

fs2 1.0.0

It's finally here! Functional streams for Scala have reached a stable release version!
fs2 contributors
sbt-classy

Generates classy lenses using scala.meta.
Chris Birchall (@cbirchall)
Dotty 0.10.0-RC1

After a long summer break, we are excited to release Dotty version 0.10.0-RC1. This release serves as a technology preview that demonstrates new language features and the compiler supporting them.
Dotty contributors

VARIA

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