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January 25th, 2020


January: Scala Best Practices

Listing and explaining all these rules I wish someone’d told me about when I was learning the language.
Nicolas Rinaudo (@NicolasRinaudo)
February: Is your Scala object always a singleton?

Diving deep into a very interesting case.
Jacek Kunicki (@rucek)
March: Using Scala in the Cloud: A Guide to Amazon EC2 Instance Types

We ran a number of Scala compilation benchmarks and look at what Amazon instance type is the fastest and what offers the best cost per build.
Iulian Dragoș (@jaguarul)
April: Did Functional Programming get it wrong?

Rather than blaming Scala or Haskell or reaching for the next flashy FP language, we suggest there is a much deeper issue in the Silicon Valley tech stack…
reinman (@datacountry_ai)
May: The little gems of Scala standard library

Turns out there's a huge interest in these utilities.
Linas Medžiūnas (@LinasMedziunas)
June: The Evolution of a Scala Programmer

17 different ways to calculate a factorial, see how close you are to the enlightenment.
Alexey Avramenko (@vvviiimmm)
July: My favorite new features of Scala 2.13 standard library

Improvements and other changes of Scala 2.13 release.
Linas Medžiūnas (@LinasMedziunas)
August: Scala Almost Succeeded

This post is an opinion on why Scala’s early success may be coming to an end and what I believe the Scala community needs to do to get back into a phase of growth.
Sam Halliday (@fommil)
September: Top 10 Scala Libraries For Data Science

A great compilation of tools.
Ambika Choudhury
October: How to structure your Scala application?

Putting a proper Scala app together.
Michał Matłoka (@mmatloka)
November: How I learned to stop worrying and love FP in Scala

In order to become able to write functional code, or better yet to start thinking functional, you have to exercise it.
Ilya Kazovsky
December: A Glossary of Functional Programming

A simple (but reasonably precise) pedagogical definitions for a range of functional concepts.
John A De Goes (@jdegoes)


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  1. Scala Times Top Links of 2019

    January: Scala Best Practices. February: Is your Scala object always a singleton?. April: Did Functional Programming get it wrong?. May: The little gems of Scala standard library. June: The Evolution of a Scala Programmer.

  2. Scala Times Issue #310

    Git hooks in Scala projects  - the easy way!. Testing Doobie programs. Implementing typeclasses in Scala I. Effective testing with ZIO Test. Akka Streams: error handling in event processing pipelines.

  3. Scala Times Issue #309

    Towards more functional Play — Part 2. TMWL’ Dec 19 — Scala 3 overview, Scala hacks and DevOps hints. Scala etcd client with etcd4s and cats-effects. Boilerplate-free type class definition. GCP Cloud Functions with Scala.js in 10 lines(ish).

  4. Scala Times Issue #308

    Towards more functional Play  -  Part 1. ZIO environment meets constructor-based dependency injection. How-to run tests in parallel with sbt. Learn myself some Scala 3, episode 4: strict equality. 5 pitfalls to avoid when starting to work with ZIO.

  5. Scala Times Issue #307

    Standardizing IO Interfaces for Scala Libraries. WebSocket Streaming with Scala. State of Monocle. Scala tooling in 2019. How to Work with Scala Collections in Java.

  6. Scala Times Issue #306

    2019 Scala Developer Survey . Lessons Learned Building a Van Laarhoven Lens Library. A Glossary of Functional Programming. Tips for moving from tut to mdoc. Notes on Category Theory in Scala 3 (Dotty).

  7. Scala Times Issue #305

    Beyond Liskov: Type Safe Equality in Scala. Scala 2 Roadmap Update: the Road to Scala 3. Explicit nulls are in!. Functional Scala London 2019: Day 1. Leveraging Monoids for More Powerful Summarization.

  8. Scala Times Issue #304

    Akka references serialization with Protobufs (up to Akka 2.5). TMWL November’19 — ScalaTest, Medusa, PW-Sat2 cubesat. Implement your future with ZIO. Decouple the Program from its Implementation with ZIO modules. ZIO environment and modules pattern: zio, scala.js, react, query management.

  9. Scala Times Issue #303

    Write your own micro BDD test framework in one day. Monoid in the Category of Endofunctors. Introducing Scala Server Toolkit. How to write a command-line application with ZIO. Picking a Languages for Introductory CS  - The Argument Against Python.

  10. Scala Times Issue #302

    Regexp Replacement via Function in Java/Scala. Rationality in a Natural World: Arithmetic at the Type-Level. Transforming Data with Embedded Spark. Migrate a service getting 200KQPS from Jackson to Circe. Scala Type Classes comparison.

  11. Scala Times Issue #301

    Functors  - From Category Theory into Cats. Tour of Akka Typed: Cluster Sharding. The Future.await(s) for no one. Service architecture in Scala. Streaming the last few minutes from Kafka using Akka Streams.

  12. Scala Times Issue #300

    How an Optimizing Compiler Works. TMWL October’19  - Scala Steward, DB index and a React hack. Working with HTTP in Polynote. How I learned to stop worrying and love FP in Scala. A real life example of isomorphisms in Scala: POST request.

  13. Scala Times Issue #299

    Kleisli Category - From theory to Cats. Presto with Doobie. Lambda World 2019. Speeding up time with Zio TestClock. Simulating IoT Events - with Zio Streams.

  14. Scala Times Issue #298

    Scala application lifecycle, from pure Scala to FS2. Top 5 things that slow down your Scala build - Triplequote. ZIO, Http4s, Auth, Codecs and zio-test. Magnolia typeclass generation for Avro. Bird Operator in Scala.

  15. Scala Times Issue #297

    Websockets in Scala using sttp. Vim with Dotty (using coc vim). Sizeof in Scala. Scala Classes - Syntax, Declaration, Use case, Examples. How to structure your Scala application?.

  16. Scala Times Issue #296

    Travis Continuous deployment for your open source library. Publish open source project to Maven with Sonatype. My Way to Scala - part 1. Scala Tuples - Syntax, Declaration, Use case, Examples. Better management of transitive dependencies and conflicts.

  17. Scala Times Issue #295

    Tour of Akka Typed: Event Sourcing. Optional Is the New Mandatory. Visitors - a tale of generalization. Working with Databases using Scala and Quill. Proving Primality with GADTs.

  18. Scala Times Issue #294

    Scraping Websites using Scala and Jsoup. A quiet, attractive new programming language. Domain-driven event sourcing with Akka Typed. Crushing Design Patterns! - Chain of responsibility (Scala). Crushing Design Patterns! - Unnecessary Patterns.

  19. Scala Times Issue #293

    Painlessly passing message context through Akka Streams. Simple Web and Api Servers with Scala. From @Transactional to type-safe, reasonable transactions. 3 Layer Scala Cake. Illustrated guide to Types, Sets and Values.

  20. Scala Times Issue #292

    Human-readable case class diffs. Cats 2.0 migration guide. Top 10 Scala Libraries For Data Science. Kenji Yoshida receives community award. Kelley Robinson receives community award.

  21. Scala Times Issue #291

    Squeezing extra productivity out of Ammonite Scala REPL. Akka family build infrastructure. Learning Akka Typed from Classic. On Eliminating Error in Distributed Software Systems. Error Handling in Functional Applications - from Monad Transformers to ZIO.

  22. Scala Times Issue #290

    Easy Parallel Programming with Scala Futures. Permutive Community Engineering, August 2019. Key things I picked up while working with Scala. Typing the technical interview in Scala. Why Try? - Scala Error Handling.

  23. Scala Times Issue #289

    Dotty (Scala 3) adoption report: easy so far. Scraping and Storing Crypto-currency Prices with Scala and PostgreSQL. Scala Almost Succeeded. Allow significant indentation syntax. Jailbreak Oozie Spark action.

  24. Scala Times Issue #288

    Bootzooka 2019: functional Scala and React. The Science of Functional Programming book. Scala's isInstanceOf is an Anti-Pattern. A Scala “functional programming style” To-Do List application written with Cats. Minutes of the 13th meeting of the Scala Center, Q2 2019.

  25. Scala Times Issue #287

    When do you need Akka Cluster?. Hangman in FP Scala. Make your Google Spreadsheets Scala-ble. Understanding Monoids using real life examples. Scala in the City, London, Simply Business, August 28th.

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