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ruurtjan/functional-dsl-blog-2.scala

Created April 30, 2020 09:10
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functional-dsl-blog-2.scala
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functional-dsl-blog-2.scala
sealed trait EmailFilter
final case object Always extends EmailFilter
final case class Not(filter: EmailFilter) extends EmailFilter
final case class And(left: EmailFilter, right: EmailFilter) extends EmailFilter
final case class SenderEquals(target: Address) extends EmailFilter
final case class RecipientEquals(target: Address) extends EmailFilter
final case class BodyContains(phrase: String) extends EmailFilter
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