Scala days 2016 overview
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Scala Days 2016 provided an overview of Scala 2.12 and 2.13, as well as new tools and technologies like Dotty and the Scala Center. Scala 2.12 focuses on compiler improvements and stability while 2.13 will focus on libraries. Dotty is a new Scala compiler base using the Dot language. The Scala Center was also announced as a non-profit to support the Scala community. Sessions covered topics like Spark 2.0, Scala.js, Scala Native and more.
Scala days 2016 overview
- 2. Mayank Patel Application Architect - Oildex, a service of Transzap / Linked In @maxy_ermayank David Buschman Technical Lead - Timeli.io / / Linked In @lightspeed7 Visualize.me
- 3. Summary 2.12 Release and beyond Dotty New Tooling Scala Center Spark 2.0 Preview Scala JS Scala Native
- 4. Scala 2.12 Only runs on Java 8 Smaller executable footprint - uses new Java 8 JVM features Faster execution speeds Focus was on the compiler and "future" stability 33 Features documented in Release Notes 336 PRs from 65 committers Still on Java 6/7 ? -- 2.11 will supported for a while to come
- 5. Scala 2.12 Futures Added atten so no need to . atMap(identity) anymore Added zip and zipWith to join futures New transform method, map and recover implemented with it Easy to lift into a Try, someFuture.transform(Try(_)) New transformWith for atMap and recoverWith onSuccess and onFailure will be deprecated "zero" for Future - Future.unit will replace Future.successful(()) Never completing future - Future.never to prevent memory leaks No more use of sun.misc.Unsafe
- 6. Scala 2.12 Links @odersky @viktorklang @li_haoyi Key Note All you want to know about Futures in Scala 2.12 Strategic Scala Style: Principle of Least Power
- 7. Scala 2.13 2.13 will focus on libraries, 2.12 focused on the compiler Simpli ed Collections, more inline with Spark, better lazy Call for Strawman proposals open now, submit yours Scala stdlib split, scala-core and scala-platform
- 8. DOTTY What is Dotty ?: New Scala Compiler base on Dot What is Dot ?: A new simple language used to prove and reason about new Scala features Why?: Allows for more "dialects" for the Scala language Keep the language stable with features that are trust worthy Bit more than half the size of current Scala compiler Twice the speed of nsc (Current Scala compiler). Lot more opportunity ahead. Dotty plugin for InteliJ IDE under development
- 9. DOT Proven foundation for Scala Calculus with a minimal language subset Concludes and 8 year e ort! Encode much of the language from this instruction set Opens the door to do much more language work with better con dence than before Provides a way to prove type soundness for the language higher-order uni cation for type constructor -- SI-2712
- 10. DOTTY Martin Odersky's Key Note Procedure Syntax Macros DelayedInit General Type Protection Early Initializers Existential Types NOT moving to Dotty Intersection Types Union Types Function Arity Adaptation @static methods and elds Named Type Parameters Multiversal Equalities Not blocking lazy vals Trait parameters New Features in Dotty
- 11. New Tooling Package Index - ScalaDex - the world of Scala libraries ScalaFiddle - do I need to explain? Sip/Slip Process - revamp to simplify and make better Doc generation with dynamic linking for cross linking documentation across libraries ScalaBlitz Scalameta (Replacement for Macros) Scalafmt
- 12. Scala Center New Steward for Scala, non-pro t organization at EPFL Independently guide and support the Scala community Coordinate and develop open source libraries and tools for the bene t of all Scala users Provide deep, and quality, educational materials for Scala Money funded/donated -- IBM, Verizon, Golden Sachs, Nitro, Lightbend, 47 degrees More Details in @heathercmiller Key Note
- 15. Spark 2.0 Preview Not initial Kafka support in 2.0, maybe 2.1 Based and optimzed for DataFrames and DataSets Aggressive optimizations improvements
- 16. Scala JS Latest 0.6.9 "native" anonymous class js.tupleN Junit Support Faster code generation
- 17. Scala Native A new dialect for Scala that does NOT run on the JVM Write Scala to run on LLVM Really cool but very limited right now C level performance for some operations Almost all stdlib features supported
- 18. Session slides & Resources (1 of 2) Martin Odersky Keynote Heather Miller Keynote Matei Zaharia Keynote (Couldn't nd slides) Precise Types bring Performance Why the free Monad isn't free Scala Native Lightbend Lagoom Finagle under the hood Being creative with Genetic Algorithams
- 19. Session slides & Resources (2 of 2) Data in Motion: Streaming static Data E ciency Slick Event Sourcing Meta Programming 2.0 Poweramp Microservices at iHeartRadio Distributed Real-Time Stream Processing: Why and How 2.0 Domain Driven Design and Onion Architecture in Scala The Structure of Programming Revolutions Dotty Linker: Precise Types Bring Performance This Week in #Scala
- 22. Thanks