Type Members

1.  case class DecodingFailure[A](validValues: Set[String]) extends Product with Serializable
2.  trait Encoder[A] extends AnyRef

   A typeclass defining how to encode enumeration values as strings

   A typeclass defining how to encode enumeration values as strings

   Annotations

   @implicitNotFound("Unable to find a way to encode ${A} values as strings. Make sure it is a sealed trait and is only extended by case objects.")

3.  trait Enum[A] extends AnyRef

   sealed trait Foo
   object Foo {
     case object Bar extends Foo
     case object Baz extends Foo
   
     val enum: Enum[Foo] = Enum.derived[Foo]
   }
   
   assert(Foo.enum.values == Set(Foo.Bar, Foo.Baz))
   assert(Foo.enum.labels == Set("Bar", "Baz"))
   assert(Foo.enum.encode(Foo.Bar) == "Bar")
   assert(Foo.enum.decode("Baz") == Right(Foo.Baz))
   assert(Foo.enum.decode("invalid") == Left(DecodingFailure[Foo](Set("Bar", "Baz"))))

   A

   Type of the enumeration values