Classes inherit from other classes using the extends keyword:
class Point2d { public var x:Int; public var y:Int; public function new(x, y) { this.x = x; this.y = y; } } class Point3d extends Point2d { public var z:Int; public function new(x, y, z) { super(x, y); this.z = z; } }
Interfaces can also extend
interface Debuggable extends Printable extends Serializable
