Opening Keynote: Preparing for Scala 3

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" summary

Scala 3 moves from idea to concrete roadmap: a new compiler (dotc/dotty) with rolling releases every six weeks and a feature freeze in ~1 year targets a 2020 release; it ships tasty typed ASTs as a stable serialized format to enable separate compilation, IDE LSP support, cross-platform backends and a unified macro model. Language changes include intersection/union types, dependent and implicit function types, trait parameters, enums, generic tuples as HLists, multiversal equality, opaque types and erased parameters; macros become quote/splice plus tasty reflect/ratify and are restricted to hygienic blackbox expansion.

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" chapters (4)

1. 0:00Start
2. 4:26kicking off a hopefully annual tradition of developer surveys
3. 22:14type lambdas
4. 36:45prevent you from writing implicit conversions

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