Scala & Functional Programming Engineer. Database/SQL Veteran.
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Since our team is scattered across Europe, we took Scala Days as an opportunity to finally meet each other. I'm so glad to have such sharp colleagues!
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"Errors in production are expensive. Downtime costs real money."
Gordon Cooke learned this the hard way. His team rewrote a Scala service into Java, hoping for lower costs, easier hiring, and faster time to market. It completely backfired into far more bugs, a bigger team, and higher maintenance bills.
Paying a talent premium up front is just buying insurance against broken software.
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Improving performance is another pillar to keep Scala relevant in the AI era. Alongside bulletproof types, we need code that runs fast! ⚡
New compile-time specialization in Scala 3 drops JVM boxing overhead for primitives while staying fully compatible with generic code. You get the speed of raw data with the elegance of generics.
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My favorite talk from Scala Days 2026 was about baking refinement types right into the compiler.
Unlike libraries like Iron or Refined, it adds a built-in solver that verifies logic and math across multiple variables at compile time with zero runtime cost.
Moving from simple checks to full verification is how Scala's type system should evolve to constrain LLMs - AI code won't compile unless the math holds up.
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Even though Scala is niche, I still think it's the most AI-ready language. Martin Odersky's @scaladays keynote shows why 👇
piped.video/watch?v=jlJyuJhD…
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Scala stairs, Berlin edition. I mean, I have more photos from Scala Days, but I don't want to go against the Code of Conduct 😀
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Scala 3.10 is here 🎉
This release cleans up legacy syntax, stabilizes strict equality pattern matching, and brings several new previews and experimentals.
Here are the key highlights:
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- `with` type operator is now an error
- Java records pattern matching support
- `//> using dep` now works in the REPL
- Preview: referenceable package objects, relaxed lambdas, and unroll default args
- Experimental: inline traits and agentic spec strings
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