Scala 2.12.3 发布了，Scala 是一门现代的多范式编程语言，志在以简练、优雅及类型安全的方式来表达常用编程模式。它平滑地集成了面向对象和函数语言的特性。
- Compiler performance has improved significantly and is now automatically benchmarked after each change.
- A new optimizer setting
-opt-inline-fromlimits the classes from which the inliner will copy code.
scalac -opt-inline-from:helpprovides detailed help.
- The presentation compiler has improved support for implicit macros, which should improve the experience with libraries based on Shapeless. It also has better support for code completion for dependently typed methods.