package typeclass.ordering

final case class Email(address: String)
final case class Person(name: String, email: Email)

object OrderingImplicits {
  import scala.math.Ordering

  val emailOrdering: Ordering[Email] =
    new Ordering[Email] {
      def compare(x: Email, y: Email): Int =
        if(x.address < y.address) -1
        else if(x.address > y.address) +1
        else 0
    }
}

object Main extends App {
  import OrderingImplicits._

  val email1 = Email("alice@cool.com")
  val email2 = Email("charlie@excellent.com")
  val email3 = Email("bob@awesome.com")
  val emails = List(email1, email2, email3)

  val person1 = Person("Alice",   Email("alice@cool.com"))
  val person2 = Person("Charlie", Email("charlie@excellent.com"))
  val person3 = Person("Bob",     Email("bob@awesome.com"))
  val people = List(person1, person2, person3)

  println(s"""emailOrdering.compare(email1, email2) == ${emailOrdering.compare(email1, email2)}""")
  // println(s"""personOrdering.compare(person1, person2) == ${personOrdering.compare(person1, person2)}""")

  // println(s"""emails.sorted(emailOrdering) == ${emails.sorted(emailOrdering)}""")
  // println(s"""people.sorted(oersibOrdering) == ${people.sorted(oersibOrdering)}""")
}
package typeclass.ordering

final case class Email(address: String)
final case class Person(name: String, email: Email)

object OrderingImplicits {
  import scala.math.Ordering

  val emailOrdering: Ordering[Email] =
    new Ordering[Email] {
      def compare(x: Email, y: Email): Int =
        if(x.address < y.address) -1
        else if(x.address > y.address) +1
        else 0
    }
}

object Main extends App {
  import OrderingImplicits._

  val email1 = Email("alice@cool.com")
  val email2 = Email("charlie@excellent.com")
  val email3 = Email("bob@awesome.com")
  val emails = List(email1, email2, email3)

  val person1 = Person("Alice",   Email("alice@cool.com"))
  val person2 = Person("Charlie", Email("charlie@excellent.com"))
  val person3 = Person("Bob",     Email("bob@awesome.com"))
  val people = List(person1, person2, person3)

  println(s"""emailOrdering.compare(email1, email2) == ${emailOrdering.compare(email1, email2)}""")
  // println(s"""personOrdering.compare(person1, person2) == ${personOrdering.compare(person1, person2)}""")

  // println(s"""emails.sorted == ${emails.sorted}""")
  // println(s"""people.sorted == ${people.sorted}""")
}
Tweak ordering exercise to make use of implicit parameters
Tweak ordering exercise to make use of implicit parameters
