"fromString" method on case classes extending a sealed trait

Question

Is there an idiomatic way of generating something like a fromString method on a sealed trait for use with case classes?

For example, something like:

sealed trait ExampleEnum {def id: Any}

final case class One(first: String) extends ExampleEnum{ override def id = first}
final case class Two(first: String, second: String) extends ExampleEnum { override def id = (first, second) }

Where should def fromString(s: String): ExampleEnum exist? A companion object for the sealed trait? Something else? It feels like this "de-serialization" pattern would be something that exists or has a standard approach that would be found in existing packages.

A companion object for the sealed trait – Lasf Mar 15 '19 at 00:58 — Lasf, Mar 15 '19 at 00:58

score 1 · Answer 1 · answered Mar 16 '19 at 01:11

1

Use a companion object for the sealed trait.

answered Mar 16 '19 at 01:11

cohoz

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"fromString" method on case classes extending a sealed trait

1 Answers1