Overriding Scala Enumeration Value

Question

As far as I can tell, Scala has definitions for the Enumeration Value class for Value(Int), Value(String), and Value(Int, String).

Does anyone know of an example for

Answer 1

I would prefer doing it by extending the Enumeration.Val class.

For your requirement, I would post a sample below:

object FileType extends Enumeration {
  val csv = Val(1,"csv", ",")
  val tsv = Val(2,"tsv", "\t")
  protected case class Val(num: Int, fileType: String, delimiter: String) extends super.Val
  implicit def valueToFileType(x: Value): Val = x.asInstanceOf[Val]
}

Accessing values is as below:

scala> FileType.csv
res0: FileType.Val = csv

scala> FileType.csv.delimiter
res29: String = ,