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iOS Swift 2.0 Enumerations and Optionals Introduction to Enumerations Enums and Objects

shane reichefeld
shane reichefeld
Courses Plus Student 2,232 Points

What am i doing wrong with the enum

can anyone explain

class Point {
    var x: Int
    var y: Int

    init(x: Int, y: Int){
        self.x = x
        self.y = y

enum Direction {
    case Left 
    case Right
    case Up
    case Down

class Robot {
    var location: Point

    init() {
        self.location = Point(x: 0, y: 0)

    func move(direction: Direction) {
        // Enter your code below
        switch directection -> Point {
            case Direction.Left: return x - 1
            case Direction.Right: return x + 1
            case Direction.Up: return y + 1
            case Direction.Down: return y - 1

1 Answer

Alexander Karan
Alexander Karan
Courses Plus Student 15,220 Points

Ok first you spelt direction wrong in the switch statement. You don't need to put a return section into your switch statement, if it needed one which it doesn't that would go in the func. Also use -= or +=

switch direction {
            case .Left: location.x -= 1
            case .Right: location.x += 1
            case .Up: location.y += 1
            case .Down: location.y -= 1