Dotty is coming

on YouTube ↗49m

" summary

Dotty becomes the reference implementation for Scala 3 and aims to ship over the next 2–3 years while coexisting with Scala 2; migration guidance includes avoiding fragile features (procedure syntax, some implicit-heavy tricks), using Scala Fix rewrites to convert code (e.g. procedure syntax, lazy val fixes), testing against the Dotty community build repo, and relying on the planned stable-ABI SIP to reduce binary churn. Practical changes: HLists/records in stdlib, Scala.meta macros supported (scala-reflect not), pattern-match performance rewrites, SBT/Zinc integration work, and tooling (linker/optimizer) to make migrated code faster.

AI-written summary · about

" chapters (5)

1. 0:00Start
2. 2:29AGENDA • Building our common future - Feature status • Maintaining our common past • Binary compatibility stable Source compatibility, Scalafix - Dotty Community build
3. 8:16A LOT OF NEW FEATURES ARE COMING Allowing • new ways to build library APIs • new approaches to structure library components • more efficient implementations of library internals
4. 22:50DOTTY COMMUNITY BUILD Can be found in: Projects are build using Dotty nightlies • help us estimate complexity of migration • check Scalaix source conversion
5. 49:25Scala Days Stay tuned

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