Dropped: Procedure Syntax
Procedure syntax
def f() { ... }
has been dropped. You need to write one of the following instead:
def f() = { ... }
def f(): Unit = { ... }
Scala 3 accepts the old syntax under the -source:3.0-migration
option. If the -migration
option is set, it can even rewrite old syntax to new. The Scalafix tool also can rewrite procedure syntax to make it Scala 3 compatible.