I just realized that there’s actually another problem with putting the success type left and the error type right. Left-bias for ? makes things work for type classes like Functor[F[_]] or Monad[F[_]] ...

Scala SDK for Jev. No effect system bundled. Contribute to ticofab/scala-jev-sdk development by creating an account on GitHub.

Contribute to jamesward/sbt-mcp development by creating an account on GitHub.

YouTube video by Ruby on Rails

Arman Bilge from Typelevel is coming to town! He'll talk to us about the TypeLevel road to Scala Native and how they have optimized Cats Effect along the way. Mark the date

Security fixes GHSA-jc8x-g44q-5x7j: CookieJar accepts public-suffix Domain attributes (e.g. Domain=.com), enabling cross-origin cookie injection GHSA-674r-3w4m-554c: Server-Sent Events injection i...

YouTube video by Scala for Fun & Profit

Programming with proofs.

On programming and personal projects

Direct-style Scala: type-safe code that is easy to comprehend and generate.

YouTube video by Kai Lentit

Live coding rounds feel like Russian roulette even to elite problem-solvers. The answer isn't nerves or lack of prep — it's dual-task interference. A breakdown of why the format breaks down under its ...

We're happy to announce the release of Metals v1.6.9, which is mostly a bugfix

The most common mistake is treating the context window like storage - assuming the more you dump in, the more the agent knows. It is the exact opposite. As conversation history grows, response quality...

Changed defaults to Scala 3.9.0 LTS & lts tags now point at the 3.9 LTS series Scala 3.9.0 is both the new default Scala version and the first in line of the new Long Term Support series, so the lt...

Security fixes GHSA-gq9p-f254-h286: Ember HTTP/2 buffers a frame's declared payload before checking SETTINGS_MAX_FRAME_SIZE GHSA-3q2f-8v8m-249p: Ember HTTP/2: CONTINUATION frame with END_HEADERS b...

Scala 3 Mirrors give you a type's shape, but not its custom field names, default values, or annotations, and they refuse value classes outright. M&DE derives an enriched mirror that carries all of tha...

Highlights of the release Long Term Support SIP-71 - Allow fully implicit conversions in Scala 3 with into is now stable #26184 Remove automatic collection of entry points #25215 Scaladoc: support...

YouTube video by Rock the JVM

Using a SQL Database to serve the data for our CRUD API

YouTube video by Ryan Peterman

YouTube video by Better Stack

This is the sixty-first release in the Cats Effect 3.x lineage. It is fully binary compatible with every 3.x release and fully source-compatible with the 3.7.x lineage. What's Changed Enhancements ...

Kotlin's DeepRecursiveFunction turns deep recursion into a heap-allocated trampoline while keeping direct-style code, built on suspend functions. This post explains why that works, then builds a Scala...

This version updates the supported runtime and Scala versions, dependencies, and includes several concurrency and scheduler bug fixes. NoteIt does not upgrade Cats-Effect to 3.x, because that's sti...

Revisiting Crunchy posts on COPY, TOAST, BRIN, covering indexes, and partitioning: what we said then, which Postgres versions changed the story, and what we recommend on Postgres 19.

A look at how Databricks moved its JVM development onto lightweight editors: the platform flywheel behind standardizing on one IDE, the adoption data showing the shift, and the engineering inside Meta...