We learned about pattern matching in the past and there were a lot of “we will learn about this later“.
Some of the later is today !
One of the big advantage of case class over class is the built-in support for pattern matching. We are going to see the same advantage with case object in a later SKB.
Coming back to case class. You can perform several test using pattern matching:
- Extraction of field:
case Person(firstName, lastName) => ??? - Extraction of field with condition:
case Person(firstName, lastName) if firstName.startsWith("L") => ??? - Filter with exact match:
case Person("Leo", lastName) => ??? - Filter with exact match and handle on case class:
case p @ Person("Leo", lastName) => ??? - Several filters:
case p @ (Person("a", _) | Person(_, "b")) => ???
Reveal more information and clues