Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

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

Error with code for enumeration challenge

I'm working on this challenge and I'm pretty sure my code is right, but the challenge keeps telling me I'm making a mistake. These are the errors it's kicking back: "swift_lint.swift:41:1: error: expected declaration ^ swift_lint.swift:25:7: note: in declaration of 'Robot' class Robot { . "

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 direction {
        case .up: return location.y += 1
        case .down: return location.y += -1
        case .right: return location.x += 1
        case .left: return location.x += -1
Matt Skelton
Matt Skelton
4,548 Points

Hey Collin,

Quick fix for this one, you're missing a curly brace to close off your Robot class. Add that and you should pass the test.

Good luck!