Michał Płachta
@mplachta.com
400 followers 680 following 55 posts
λ coder • 📙 Author of "Grokking Functional Programming" • #Scala • Learning through teaching • https://michalplachta.com
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Reposted by Michał Płachta
michal.pawlik.dev
Ever wonder why you can't just override #sbt settings in a task? They're immutable, but there's a workaround 👀

Wrote up a quick #TIL on using `Project.extract` to run tasks with custom settings. #Scala
blog.michal.pawlik.dev/posts/til/sb...
Reposted by Michał Płachta
Reposted by Michał Płachta
kubuszok.com
Some time ago I made a presentation that wasn't recorded...

But at least some of the points from it could be showcased with this gist

gist.github.com/MateuszKubus...
Newtypes and tagged types
Newtypes and tagged types. GitHub Gist: instantly share code, notes, and snippets.
gist.github.com
Reposted by Michał Płachta
tonofcrates.bsky.social
it is impossible to generate code comments from source code because good comments are definitionally based on things not in the source code (intent, counterfactuals, experiments, etc.)
Reposted by Michał Płachta
matejcerny.bsky.social
Fantastic meetup yesterday! Shout out to the organizers and speakers for putting it all together. It was like looking into my CV: first job - Futures, next job - Actors, then monad transformers, and now tagless final. 😂
Reposted by Michał Płachta
michal.pawlik.dev
Functional #JVM Meetup in Prague 🇨🇿 was a blast!
It was awesome to meet fellow #functional programmers and discuss #scala over great Czech beer 🍻
matejcerny.bsky.social
Fantastic meetup yesterday! Shout out to the organizers and speakers for putting it all together. It was like looking into my CV: first job - Futures, next job - Actors, then monad transformers, and now tagless final. 😂
Reposted by Michał Płachta
lambdadays.bsky.social
Pick your track! As always, we're giving you lots of incredible talks to choose from. But don't worry if some that you're interested in overlap - after the conference you get access to all recorded presentations.

#lambdadays
Reposted by Michał Płachta
mplachta.com
Good morning @lambdadays.bsky.social!

Today, together with @michal.pawlik.dev, we will go through the history of Scala: there will monads, transformers, actors, singers and the meaning of being in a startup!

Come coin us in Track 2 @13:30!
Laptop with a slide deck
Reposted by Michał Płachta
lambdadays.bsky.social
🧭 Coming to #Lambda Days?
We’ve got a handy Attendee Guide with local tips: where to eat, drink, chill, and explore in #Krakow!

👉https://ow.ly/P95M50VPxVn
mplachta.com
🤣 CV driven presentation!

Thanks for attending! We really enjoyed giving the talk to the wonderful crowd in Prague yesterday! Hope to see you soon again! 🇨🇿
matejcerny.bsky.social
Fantastic meetup yesterday! Shout out to the organizers and speakers for putting it all together. It was like looking into my CV: first job - Futures, next job - Actors, then monad transformers, and now tagless final. 😂
Reposted by Michał Płachta
warski.org
Announcing Chimp: build type-safe, boilerplate-less #MCP servers in #Scala using the HTTP transport!

Below is a self-contained, scala-cli runnable example:
Reposted by Michał Płachta
lambdadays.bsky.social
Flavours of Scala with @mplachta.com & @michal.pawlik.dev at #LambdaDays! 🌶️

Explore "better Java," #Haskell for humans, and more as they guide you through 2 decades of #Scala evolution. Spice up your coding style! 🔥

📅 12-13 June 2025 in Krakow, Poland!
🎟️ www.lambdadays.org
Reposted by Michał Płachta
michal.pawlik.dev
Model Contex Protocol coming soon to Metals for even better #Scala IDE experience.

Give it a try!
scalaspace.bsky.social
As promised we are working hard on providing you with the Scala MCP server, we already have a WiP pull request ready and some courageous souls are actually testing it!

You can take a look and already give some feedback at github.com/scalameta/m...
WIP: MCP support by kasiaMarek · Pull Request #7390 · scalameta/metals
resolves: scalameta/metals-feature-requests#430
github.com
Reposted by Michał Płachta
scalaspace.bsky.social
With our new Scala MCP server we are able to eliminate hallucinations and unproductive guesswork for code that LLMs aren't familiar with by exposing API shapes from the caches of Metals and the Scala compiler.
Reposted by Michał Płachta
lambdadays.bsky.social
Two great talks on building languages at #LambdaDays 2025:
Nicolas Rinaudo will show you how to create a programming language from scratch and level up your tools and #DSL. 💻
Zainab Ali will treat docs like code, improving your workflow. #Racket #Elixir #Scala 📝

🎟️ Register here: www.lambdadays.org
Reposted by Michał Płachta
noelwelsh.bsky.social
Just added slides for my talk "Tagless Final for Humans" to my page of talks:

noelwelsh.com/landing/talks/

I gave this talk today at @scalar-conf.com. The core is a new encoding for tagless final in Scala, which makes much better use of Scala's features than the standard encoding.
Noel Welsh: Talks
noelwelsh.com
Reposted by Michał Płachta
michal.pawlik.dev
I had a fantastic time at the conference—connecting with Scala enthusiasts, enjoying great talks, and sharing ideas. Special thanks to the @Softwaremill for an amazing event!

I was honored to speak this year, and I’m sharing my slides here: majk-p.github.io/functor-on-a...

#Scalar2025 #Scala
Self-balancing tree called B-tree is a popular way to implement indexing in databases
majk-p.github.io
mplachta.com
Thank you, @scalar-conf.com! I had a blast! Here are the slides for my talk "Retrying the retry design": michalplachta.com/slides/retries

You can find the code (PoC!) at Github: github.com/polyvariant/... ("o rety!" is Polish for "yikes!" 💥)

Blog post and hopefully some PRs coming next week 🤞
Michał Płachta giving a talk at Scalar 2025 A big screen with a slide titled: Let's talk about design
Reposted by Michał Płachta
scalar-conf.com
Welcome to the 11th edition of #scalarconf
Reposted by Michał Płachta
mmatloka.bsky.social
Interested in learning more about Rust 🦀 or Scala?

This week, @rustikon.dev and @scalar-conf.com Conferences are happening in Warsaw — both organised by us at @softwaremill.com . It’s a great opportunity to connect, share knowledge, and dive deeper into these technologies.

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Rustikon
Join the first Rust conference in Poland, Rustikon! Be part of something new and vibrant organized by SoftwareMill Team!
www.rustikon.dev