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March 24th, 2022, ISSUE 423

READING

CosPlay

2D ASCII Game Engine for Scala.
Rowan Games (@cosplayengine)
Three tools to improve your Scala workflow

Get the most out of scalafmt, mdoc, and Scala Steward!
Adam Warski (@adamwarski)
Twotm8 (part 1)

We are deploying a Scala Native backend (with NGINX Unit) and Scala.js frontend (with Laminar) on Fly.io.
Anton Sviridov (@velvetbaldmime)
ZIO SQL: Type-safe SQL for ZIO applications

his article was inspired by a great blog post by Adam Warski, who wrote a comparison of Slick, Doobie, Quill and ScalikeJDBC a few years ago. As ZIO SQL just had its first non-production release, I wanted to add ZIO SQL to the mix and see how it compares to others.
Jaroslav Regec
Using TestControl to Test FS2 Streams

Recently I was working with an FS2 stream and wanted to write some unit tests to ensure my events were being emitted at the expected rate. I also wanted these tests to be deterministic and fast.
Farooq Qaiser

EVENTS

Lambda Days, July 28th-29th, Kraków, Poland

A vibrant event focused on FP and its growing community. Find out what is possible with functional programming - explore the latest in battle-tested Scala, Erlang and Haskell, experience the energy F# and Elixir bring to the table, connect with the innovators working with Elm, Luna and Ocaml, see what comes up next!
LambdaDays (@LambdaDays)

RELEASES

ZIO 2.0.0-RC3

This release candidate brings several exciting features. In particular it introduces scopes as first class values, which provide the basis for safe, composable resource handling.
ZIO contributors





  1. Scala Times Issue #442

    Selection functions are interesting notion with tricky implementation. Tagless final  -  from a different perspective. Long-term compatibility plans for Scala 3. Static Dynamics - Expression definable datatypes in Scala. Top Link of July: Foldable and Traverse with Scala and Cats.


  2. Scala Times Issue #441

    The future of effects in Scala?. ZIO 2 dot Ohhhhh!. Functional Programming Crash Course for Scala Beginners. Functional Scala 2022 CFP. ScalaCon 2022 CFP, October 4th-5th, virtual event.


  3. Scala Times Issue #440

    Teach Programming with Scala. CQRS with Scala, Akka, and Cassandra. Lambda Days, July 28th-29th, Kraków, Poland. Functional Scala 2022 CFP. ScalaCon 2022 CFP, October 4th-5th, virtual event.


  4. Scala Times Issue #439

    A Prelude of Purity: Scaling Back ZIO. Scala Improvement Process - Evolving Scala openly and collaboratively. Secure the Dependencies of your Scala Project on Github. Type safety with refined. Architecture of Metals.


  5. Scala Times Issue #438

    NonEmptyLists more or less. Cats vs ZIO. ScalaWAW #22 - garden grill party, July 20th, Warsaw, Poland. Lambda Days, July 28th-29th, Kraków, Poland. Functional Scala 2022 CFP.


  6. Scala Times Issue #437

    Foldable and Traverse with Scala and Cats. Ergonomics of end markers. Functional Scala 2022 CFP. Lambda Days, July 28th-29th, Kraków, Poland. ScalaCon 2022 CFP, October 4th-5th, virtual event.


  7. Scala Times Issue #436

    Persistent data structures in functional programming. Concurrent Sudoku Solver: Part 4 - Using FS2 Stream + Topic. Scala or Go: Who Wore It Better?. Fields  -  Scala Validation Library. Zymposium - Derivable Differs.


  8. Scala Times Issue #435

    Scala at Prezi: Introduction of ZIO. First 5 years of the Scala Center. Disjoint Graph Unions: Performance Case Study. Functional Scala 2022 CFP. Lambda Days, July 28th-29th, Kraków, Poland.


  9. Scala Times Issue #434

    Creating CLI tools leveraging ZIO and Decline using scala-cli. Apache Spark 3.0 Exciting Capabilities. Validation in Scala 3 with Cats. ZLayers in ZIO 2.0 are a totally different BEAST!. It's time to traverse (SPFS #11).


  10. Scala Times Issue #433

    Structuring ZIO 2 applications. What are ZIO Effect Constructors?. Roadmap to a Successful Data Engineer. Creating an SBT Project Template using Giter8. ScalaWAW #21, June 9th, 2022, Warsaw, Poland.


  11. Scala Times Issue #432

    Free Monad in Scala. Tracking Side Effects in Scala. Concurrent Sudoku Solver: Part 3 - Using Cats Effect Queue. Data validation using cats Validated. Resource safety is hard - SPFS #10.


  12. Scala Times Issue #431

    You already know Monad(ic) stuff. Top Link Of April: Dependency management in Scala. Lambda Days, July 28th-29th, Kraków, Poland. ScalaCon 2022 CFP, October 4th-5th, virtual event. Functional Scala 2022, December 1st-2nd, London.


  13. Scala Times Issue #430

    OOP vs Type Classes, Part 1: Ideology. Scala Generics: A Gentle Introduction. Lambda Days, July 28th-29th, Kraków, Poland. ScalaCon 2022 CFP, October 4th-5th, virtual event. Functional Scala 2022, December 1st-2nd, London.


  14. Scala Times Issue #429

    Implicit vs Scala 3's Given. New in Scala 3. What is a Monad? Adam Warski. GitHub Code Search First Look. A Prelude of Purity: Scaling Back ZIO.


  15. Scala Times Issue #428

    Lambda Days, July 28th-29th, Kraków, Poland. ScalaCon 2022 CFP, October 4th-5th, virtual event.


  16. Scala Times Issue #427

    Akka durable state. Scala OOFP Design Sample. Dependency management in Scala. Lambda Days, July 28th-29th, Kraków, Poland. ScalaCon 2022 CFP, October 4th-5th, virtual event.


  17. Scala Times Issue #426

    Bootzooka 2022: cats-effect 3, autowire &tapir. Scala's Gitter to Discord migration mistake. Scala Center Q1 2022 Update. Diamond Architecture - How to build HUMONGOUS Apps FAST!. Lambda Days, July 28th-29th, Kraków, Poland.


  18. Scala Times Issue #425

    Scala 3: Significant indentation and other things we love. Context Function for DSL Design in Scala. Introducing Scopes in ZIO 2.0. On Typelevel and Monix. Call for Steering Committee Members.


  19. Scala Times Issue #424

    Fancy strings in Scala 3. Scala & the Three Implicits. Scala 3: “Erased” Definitions. Tapir: Building an adopters page. Lambda Days, July 28th-29th, Kraków, Poland.


  20. Scala Times Issue #423

    Three tools to improve your Scala workflow. Twotm8 (part 1). ZIO SQL: Type-safe SQL for ZIO applications. Using TestControl to Test FS2 Streams. Lambda Days, July 28th-29th, Kraków, Poland.


  21. Scala Times Issue #422

    The Debug Adapter Protocol and Scala. The Java Timer. List vs Vector in 2022. Journey of Implicits in Scala  -  part 3. Autowire - an overview.


  22. Scala Times Issue #421

    Scala 3 inline and macros community census. Finding awesome Scala libraries. Journey of Implicits in Scala  -  part 2. Different Ways to Package a Simple Scala Application. Cloudflare functions with Scala.js.


  23. Scala Times Issue #420

    FS2-Kafka in real world - Part 2. Journey of Implicits in Scala. Grow the Scala community with a SINGLE command!. Lambda Days, July 28th-29th, Kraków, Poland. Support for Scala 3 in mainargs.


  24. Scala Times Issue #419

    Leveraging AWS Aurora for Event Sourcing. Effective Scala Case Class Patterns. TypeVille, April 20th - 22nd Krynica-Zdrój, Poland. Lambda Days, July 28th-29th, Kraków, Poland. UML Class Diagram for Scala.


  25. Scala Times Issue #418

    Writing a simple CLI game in Scala 3. The Scala Center's roadmap for a Unified Scala.js Ecosystem. Monadic Resource Management in Scala. About capture checking. FS2-Kafka in real world - Part 1.


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