run2-scala-data-abstractions

name	run2_scala-data-abstractions
description	Idiomatic data modeling with case classes, sealed traits, and exhaustive matching.

Best Practices

1. Sealed Hierarchy: Ensure all subtypes are known at compile time for exhaustive pattern matching.

   sealed trait TokenValue
   case class StringValue(s: String) extends TokenValue
   

2. Case Classes: Use for data containers. They provide equals, hashCode, copy, and constructor-based pattern matching out of the box.

3. Collections: Prefer immutable.Seq, Vector, or List for functional transformations. Use view for lazy operations.