| 1 | trait Shape { |
| 2 | def isBiggerThan(another: Shape) = this.area > another.area |
| 3 | def area: Double |
| 4 | } |
| 5 | |
| 6 | class Rectangle(val sideLength: Double, val anotherSideLength: Double) extends Shape { |
| 7 | def area = this.sideLength * this.anotherSideLength |
| 8 | } |
| 9 | |
| 10 | class Square(size: Double) extends Rectangle(size, size) { |
| 11 | } |
| 12 | |
| 13 | val square1 = new Square(10) |
| 14 | val square2 = new Square(5) |
| 15 | println(square1.isBiggerThan(square2)) |