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class Test {
class A[T]
class B[T](val a: A[T])
case class CaseClass[T](x: T)
def break(existB: B[_]) =
CaseClass(existB.a) match { case CaseClass(_) => }
}
class Foo {
trait Init[T]
class ScopedKey[T] extends Init[T]
trait Setting[T] {
val key: ScopedKey[T]
}
case class ScopedKey1[T](val foo: Init[T]) extends ScopedKey[T]
val scalaHome: Setting[Option[String]] = null
val scalaVersion: Setting[String] = null
def testPatternMatch(s: Setting[_]) {
s.key match {
case ScopedKey1(scalaHome.key | scalaVersion.key) => ()
}
}
}
class Test2 {
type AnyCyclic = Execute[Task]#CyclicException[_]
trait Task[T]
trait Execute[A[_] <: AnyRef] {
class CyclicException[T](val caller: A[T], val target: A[T])
}
def convertCyclic(c: AnyCyclic): String =
(c.caller, c.target) match {
case (caller: Task[_], target: Task[_]) => "bazinga!"
}
}
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