Writing unapply Methods to Enable Pattern Matching (Scala 3 Video)

In this free Scala training video I show how to write unapply methods in Scala companion objects to enable pattern matching in match expressions.

I first show how to write a simple unapply method that returns a String, and then I show how a default custom class will not work in a match expression. Then I show how to properly write an unapply method so your custom class will work in a match expression.