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Great. What's the status on performance slowdown wrt to relying on Java 8 default methods in 2.12[1]? Hopefully this is not a JVM limitation[2] and can be sort

Great. What's the status on performance slowdown wrt to relying on Java 8 default methods in 2.12[1]? Hopefully this is not a JVM limitation[2] and can be sorted out during the RC cycle. Fewer generated class files and improved performance would very much be a nice-to-have. [1] http://www.scala-lang.org/blog/2016/07/08/trait-method-performance.html http://www.scala-lang.org/blog/2016/07/08/trait-method-perfo... [2] https://bugs.openjdk.java.net/browse/JDK-8161334 https://bugs.openjdk.java.net/browse/JDK-8161334

PartOSolution25 10y ago
The blog entry doesn't mention the impact of that performance regression on Scala 3 (aka Dotty).
- virtualwhys 10y ago
  Sure, but Dotty is like hindsight, (arriving the year) 2020. Regardless, there's a significant performance regression to sort out prior to the 2.12 GA. If it is a JVM limitation it won't be solved until at least Java 9 (according to the fix version listed in the bug report), which will mean 2.12 loses one of the stated goals of the release: reduction in number of generated class files (with perhaps slightly faster build times). Anyway, we'll see in the coming weeks/months if a resolution or workaround manifests.