Scala Stuff

case class Person(name: String)

case class Cat(name: String, color: String, favoriteFood:String){
    def eat(food:String) : String = {
        if (food==favoriteFood) "OMNOMNOM" else "Bleeeh"
    }

    def greet(person: Person): String = {
        person match {
            case Person("Noel") => "Hi"
            case Person(first)  => s"Goodbye ${first}"
            case _              => "No"
        }
    }
}

object ChipShop {
    def serves(cat : Cat) : Boolean = {
        cat match {
            case Cat(_, _, "Chips") => true
            case _                  => false
        }
    }
}



val oswald    = Cat("Oswald", "Black", "Milk")
val henderson = Cat("Henderson", "Ginger and White", "Chips")
val quentin   = Cat("Quentin", "Tabby and White", "Curry")

val noel = Person("Noel")
val joel = Person("Joel")

trait Visitor {
    def id: String
}
//Algebraic Data Types, ANDing and ORing to make types
case class Anon(id: String) extends Visitor
case class User(id: String) extends Visitor

trait Shape {
    def width: Int
    def height: Int
    def area : Double = this match {
        case Rectangle(width, height) => width*height
        case Circle(radius)           => Math.pow(radius, 2) * Math.PI
    }
}

case class Rectangle(width: Int, height: Int) extends Shape {

}

case class Circle(radius : Int) extends Shape {
    def width : Int = {
        radius * 2
    }

    def height : Int = {
        radius * 2
    }
}