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Passing case objects in Scala


You are inheriting Test object from Function1 class, so you need to implement 'apply' method instead of 'myMethod'. This code compiles and runs:

  sealed trait MyTrait
  case object One extends MyTrait
  case object Two extends MyTrait

  case class MyTraitReturnVal(my: MyTrait)

  object Test extends (MyTrait =>
MyTraitReturnVal) {
    def apply(myTrait: MyTrait) =
      new MyTraitReturnVal(myTrait)
  }

  println(Test(One))
  println(Test(Two))

Categories : Scala

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