Scala / Scala interview questions
What are Sealed classes in Scala?
Traits and classes can be marked sealed
which means all subtypes must be declared in the same file. This assures that all subtypes are known.
sealed abstract class Communication case class VoiceCall() extends Communication case class Message() extends Communication def findPlaceToSit(commtype: Communication): String = commtype match { case a: VoiceCall => "Call him" case b: Message => "Message him" }
Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.
The Robinhood app makes it easy to trade stocks, crypto and more.
More Related questions...