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Scala 2.13.5
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@SethTisue SethTisue released this 22 Feb 21:01
· 3085 commits to 2.13.x since this release
v2.13.5
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SethTisue Seth Tisue
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Learn about vigilant mode.
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Learn about vigilant mode.

Scala 2.13.5

The Scala 2 team at Lightbend is pleased to announce the availability of Scala 2.13.5.

Highlights

Other changes

  • Assorted improvements to exhaustivity checking in pattern matching (#9479, #9472, #9474, #9313, #9462)
  • Assorted improvements to handling of higher-kinded types, aligning with Scala 3 (#9400, #9404, #9405, #9414, #9417, #9439) — thank you @joroKr21!
  • Make -target support JVM 13, 14, 15, 16, and 17 (#9489, #9481)
  • Omit @nowarn annotations from generated code, for forwards compatibility at compile-time (#9491)
  • Add linting of unused context bounds (via -Wunused:synthetics or -Wunused:params) (#9346) — thank you @som-snytt!
  • Lift artificial restrictions on ConstantAnnotations (#9379)
  • Make Java Map wrappers handle nulls according to put/remove contract (#9344) — thank you @som-snytt!
  • Make language specification available as a PDF (#7432) — thank you @sake92!

Some small changes that will ship in 2.12.14 are also included in this release.

For complete 2.13.5 change lists, see all merged PRs and all closed bugs.

Compatibility

As usual for our minor releases, Scala 2.13.5 is binary-compatible with the whole Scala 2.13 series.

Upgrading from 2.12? Enable -Xmigration while upgrading to request migration advice from the compiler.

Contributors

A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.

This release was brought to you by 23 contributors, according to git shortlog -sn --no-merges HEAD ^v2.13.4 ^2.12.x. Thank you Seth Tisue, A. P. Marki, Dale Wijnand, NthPortal, Jamie Thompson, Lukas Rytz, Martijn Hoekstra, Georgi Krastev, Jason Zaugg, Jasper Moeys, Sakib Hadziavdic, Anatolii Kmetiuk, Arnaud Gourlay, Marcono1234, Chia-Ping Tsai, Mike Skells, Stefan Zeiger, Waleed Khan, Yann Bolliger, Guillaume Martres, 梦境迷离, Ethan Atkins, Darcy Shen.

Thanks to Lightbend for their continued sponsorship of the Scala core team’s efforts. Lightbend offers commercial support for Scala.

Scala 2.13 notes

The release notes for Scala 2.13.0 have important information applicable to the whole 2.13 series.

Obtaining Scala

Scala releases are available through a variety of channels, including (but not limited to):

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