Adam Warski
@warski.org
Sharing elegant solutions to everyday problems | R&D @ SoftwareMill | #Scala / functional programmer #FP | Blogger | #OSS developer
Everybody's talking about THAT piece of #Rust code. Would you have done it better? How to avoid .unwrap()? What's the root cause, is it the people, or is the type system too weak? What are we missing?
These are all great subjects for a @rustikon.dev session. The c4p ends soon!
These are all great subjects for a @rustikon.dev session. The c4p ends soon!
November 20, 2025 at 11:48 AM
Everybody's talking about THAT piece of #Rust code. Would you have done it better? How to avoid .unwrap()? What's the root cause, is it the people, or is the type system too weak? What are we missing?
These are all great subjects for a @rustikon.dev session. The c4p ends soon!
These are all great subjects for a @rustikon.dev session. The c4p ends soon!
Congratulations to Martin Odersky for receiving the Programming Languages Achievement Award @icfp-conference.bsky.social - well deserved! :)
I can only confirm what it says on the citation, his work deeply impacted how I view programming.
Let's work towards making #Scala a continued success!
I can only confirm what it says on the citation, his work deeply impacted how I view programming.
Let's work towards making #Scala a continued success!
October 14, 2025 at 12:27 PM
Congratulations to Martin Odersky for receiving the Programming Languages Achievement Award @icfp-conference.bsky.social - well deserved! :)
I can only confirm what it says on the citation, his work deeply impacted how I view programming.
Let's work towards making #Scala a continued success!
I can only confirm what it says on the citation, his work deeply impacted how I view programming.
Let's work towards making #Scala a continued success!
If you're at #icfpsplash25, join the #Scala workshop which runs now - all of Monday - and Tuesday morning. Lots of interesting talks! I'll be speaking as well, hopefully adding something interesting to the lineup: How functional is direct-style? See you there!
October 13, 2025 at 3:10 AM
If you're at #icfpsplash25, join the #Scala workshop which runs now - all of Monday - and Tuesday morning. Lots of interesting talks! I'll be speaking as well, hopefully adding something interesting to the lineup: How functional is direct-style? See you there!
In Bootzooka - our direct-style #Scala service template - there's a single source of truth when it comes to HTTP endpoints: the code-first description in the backend.
September 3, 2025 at 8:31 AM
In Bootzooka - our direct-style #Scala service template - there's a single source of truth when it comes to HTTP endpoints: the code-first description in the backend.
Post-@scaladays.org hike! Just an hour away from Lausanne :)
Speaking of Scala conferences… if anything inspired you at ScalaDays, maybe it would make a good talk for @scalar-conf.com? The c4p is closer than you think ;)
Speaking of Scala conferences… if anything inspired you at ScalaDays, maybe it would make a good talk for @scalar-conf.com? The c4p is closer than you think ;)
August 22, 2025 at 3:53 PM
Post-@scaladays.org hike! Just an hour away from Lausanne :)
Speaking of Scala conferences… if anything inspired you at ScalaDays, maybe it would make a good talk for @scalar-conf.com? The c4p is closer than you think ;)
Speaking of Scala conferences… if anything inspired you at ScalaDays, maybe it would make a good talk for @scalar-conf.com? The c4p is closer than you think ;)
August 20, 2025 at 12:23 PM
Doing some benchmarks for Ox, using the excellent Kyo benchmark arena, which already has the code for Kyo, cats and ZIO.
I've added Ox & Pekko to a couple of benchmarks - the results are varied. Ox holds well in streaming, in other areas the benchmarks often really test the JVM & virtual threads.
I've added Ox & Pekko to a couple of benchmarks - the results are varied. Ox holds well in streaming, in other areas the benchmarks often really test the JVM & virtual threads.
July 23, 2025 at 1:22 PM
Doing some benchmarks for Ox, using the excellent Kyo benchmark arena, which already has the code for Kyo, cats and ZIO.
I've added Ox & Pekko to a couple of benchmarks - the results are varied. Ox holds well in streaming, in other areas the benchmarks often really test the JVM & virtual threads.
I've added Ox & Pekko to a couple of benchmarks - the results are varied. Ox holds well in streaming, in other areas the benchmarks often really test the JVM & virtual threads.
Might seem like a tiny #Scala Metals features, but it really makes a difference: the status bar tells you that the code in the module you're currently in won't compile (hence - no new highlighting), because there are errors in an upstream module.
July 14, 2025 at 4:57 PM
Might seem like a tiny #Scala Metals features, but it really makes a difference: the status bar tells you that the code in the module you're currently in won't compile (hence - no new highlighting), because there are errors in an upstream module.
More MCP examples written using Chimp!
1. proxying to a service available via HTTP: github.com/softwaremill...
2. exposing multiple tools: github.com/softwaremill...
1. proxying to a service available via HTTP: github.com/softwaremill...
2. exposing multiple tools: github.com/softwaremill...
June 25, 2025 at 12:06 PM
More MCP examples written using Chimp!
1. proxying to a service available via HTTP: github.com/softwaremill...
2. exposing multiple tools: github.com/softwaremill...
1. proxying to a service available via HTTP: github.com/softwaremill...
2. exposing multiple tools: github.com/softwaremill...
With the latest updates, Ox's blocking, synchronous streaming through `Flow`s is now fully integrated with sttp-client & Tapir.
This includes both streaming byte-bodies (as request & response), SSE (Server Sent Events) as well as handling WebSockets as streams of frames.
This includes both streaming byte-bodies (as request & response), SSE (Server Sent Events) as well as handling WebSockets as streams of frames.
June 23, 2025 at 4:38 PM
With the latest updates, Ox's blocking, synchronous streaming through `Flow`s is now fully integrated with sttp-client & Tapir.
This includes both streaming byte-bodies (as request & response), SSE (Server Sent Events) as well as handling WebSockets as streams of frames.
This includes both streaming byte-bodies (as request & response), SSE (Server Sent Events) as well as handling WebSockets as streams of frames.
Jox (#Java) & Ox (#Scala) - virtual thread-based safe concurrency & streaming - updates:
* `selectWithin` which guarantees that no elements are received from channels on timeout
* more `Flow` operators: `split` & `splitOn`
* `selectWithin` which guarantees that no elements are received from channels on timeout
* more `Flow` operators: `split` & `splitOn`
June 17, 2025 at 10:06 AM
Jox (#Java) & Ox (#Scala) - virtual thread-based safe concurrency & streaming - updates:
* `selectWithin` which guarantees that no elements are received from channels on timeout
* more `Flow` operators: `split` & `splitOn`
* `selectWithin` which guarantees that no elements are received from channels on timeout
* more `Flow` operators: `split` & `splitOn`
Thank you Devoxx & LambdaDays! It's been very intense three days, with great hallway/functional/Java/AI tracks :) Hope to see you next year!
June 13, 2025 at 1:04 PM
Thank you Devoxx & LambdaDays! It's been very intense three days, with great hallway/functional/Java/AI tracks :) Hope to see you next year!
Secondly, the `retry` API has been improved with more flexible schedules. They are composable & testable, which amounts to inspecting the list of intervals at which the operation might be triggered.
June 2, 2025 at 10:07 AM
Secondly, the `retry` API has been improved with more flexible schedules. They are composable & testable, which amounts to inspecting the list of intervals at which the operation might be triggered.
What's new in Ox 0.6.0 (safe direct-style concurrency and resiliency for #Scala on the #JVM)?
Firstly, Ox no longer uses preview JVM features, specifically `StructuredTaskScope`s and `ScopedValue`s. Stabilization of these seems quite far off, and Ox now works with any JVM 21+.
Firstly, Ox no longer uses preview JVM features, specifically `StructuredTaskScope`s and `ScopedValue`s. Stabilization of these seems quite far off, and Ox now works with any JVM 21+.
June 2, 2025 at 10:07 AM
Latest Tapir supports direct-style streaming bodies, including server-sent events. Cannot get much simpler ;)
May 28, 2025 at 7:31 PM
Latest Tapir supports direct-style streaming bodies, including server-sent events. Cannot get much simpler ;)
Comparing Structured Concurrency approaches in #Java: JEP 505 (left) vs Jox (right).
Both implement the same logic: run `findUser` and `fetchOrder` in parallel, and combine their results. Any failure interrupts the other tasks, and when they terminate, propagates the exception.
Both implement the same logic: run `findUser` and `fetchOrder` in parallel, and combine their results. Any failure interrupts the other tasks, and when they terminate, propagates the exception.
May 20, 2025 at 3:28 PM
Comparing Structured Concurrency approaches in #Java: JEP 505 (left) vs Jox (right).
Both implement the same logic: run `findUser` and `fetchOrder` in parallel, and combine their results. Any failure interrupts the other tasks, and when they terminate, propagates the exception.
Both implement the same logic: run `findUser` and `fetchOrder` in parallel, and combine their results. Any failure interrupts the other tasks, and when they terminate, propagates the exception.
Tour of Jox: safe & developer-friendly structured concurrency - building upon the upcoming Java JEPs
April 28, 2025 at 12:59 PM
Tour of Jox: safe & developer-friendly structured concurrency - building upon the upcoming Java JEPs
Tour of Jox: finite & infinite #Java streaming using flows, with reactive streams compatibility, (blocking) I/O integration, and a high-level, “functional” API.
April 24, 2025 at 9:52 AM
Tour of Jox: finite & infinite #Java streaming using flows, with reactive streams compatibility, (blocking) I/O integration, and a high-level, “functional” API.
Just found out (via @szimano.org ) that the @oreilly.bsky.social "Programming #Scala" book by @deanwampler.bsky.social has a Tapir on the cover (since 2009!)
Destiny! ;)
Destiny! ;)
April 17, 2025 at 2:19 PM
Just found out (via @szimano.org ) that the @oreilly.bsky.social "Programming #Scala" book by @deanwampler.bsky.social has a Tapir on the cover (since 2009!)
Destiny! ;)
Destiny! ;)
sttp client v4 - the #Scala client you always wanted - released!
Simpler types, shorter names, fewer type parameters, clearer error messages, better IDE integration - these are the driving factors of the new stable release.
Simpler types, shorter names, fewer type parameters, clearer error messages, better IDE integration - these are the driving factors of the new stable release.
April 8, 2025 at 1:49 PM
sttp client v4 - the #Scala client you always wanted - released!
Simpler types, shorter names, fewer type parameters, clearer error messages, better IDE integration - these are the driving factors of the new stable release.
Simpler types, shorter names, fewer type parameters, clearer error messages, better IDE integration - these are the driving factors of the new stable release.