Migrating to Scala 2.13

on YouTube ↗41m

" summary

Scala 2.13 delivers a ground-up collections redesign: default Seq becomes immutable, CanBuildFrom is replaced by builtFrom → Factory and views are reworked; the standard library is modularized and several compiler flags are removed. Milestone 4 ships (released at Scala Days Berlin) with M5 planned for Aug 10. Migration uses SBT tweaks (enable -deprecation, cross-source folders) and an automated migration implemented as a scalafix rewrite that applies many renames and simple rewrites but leaves complex CanBuildFrom usages and custom collections for manual work; add scala-collection-compat to ease cross-building.

AI-written summary · about

" chapters (18)

1. 0:00Introduction
2. 0:23Scala 213
3. 3:06Prepare for 213
4. 8:31Build with 213
5. 12:56Design Goals
6. 14:27Immutable Seek
7. 18:18Built From
8. 20:28Factory
9. 22:17Breakout
10. 24:41Views
11. 27:01Collections
12. 28:25Source Folders
13. 29:55Additional Resources
14. 32:02Manual migration
15. 32:49Migration rules
16. 36:32Migrating a Library
17. 37:44Documentation
18. 38:53Questions

" related talks

• 35mMigrating to Scala 2.13Julien Richard-Foy, Stefan Zeiger · Scala Days Berlin 2018
• 37mWhat’s in the next iteration of the standard collections?Julien Richard-Foy · Scala.IO 2017
• 40mScala 2.13Adriaan Moors · Scale By the Bay 2017
• 51mImplementing the Scala 2.13 collectionsStefan Zeiger · Scala Days Lausanne 2019
• 29mMaking the Transition to Scala 3Seth Tisue · Scale By the Bay 2021
• 47mClosing Panel DiscussionScala Days Berlin 2016
• 01h 06mCountdown to 3Martin Odersky · Scale By the Bay 2020
• 51mClosing PanelChris Kipp · Scala Days 2023 Madrid