ex15 - https://medium.com/@lu4nm3/bend-any-type-to-your-will-with-ad-hoc-polymorphism-4e6d326f1ff0

ex15_bend.scala

object Perishables {
  implicit val baguettePerishable: Perishable[Baguette] = new Perishable[Baguette] {
    def expired(b: Baguette): Boolean = false // hard coded, in reality we would examine `b` to figure out if it expired
  }

  implicit val croissantPerishable: Perishable[Croissant] = new Perishable[Croissant] {
    def expired(c: Croissant): Boolean = false
  }
}