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 Build a Simple iPhone App with Swift 2.0 Getting Started with iOS Development Swift Recap Part 2

Davis Meissner
Davis Meissner
1,179 Points

i just want to find the answer

I just want to find the answer

classes.swift
class Point {
    var x: Int
    var y: Int

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


class Machine {
    var location: Point

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

    func move(direction: String) {
        print("Do nothing! I'm a machine!")
    }
}

// Enter your code below

1 Answer

Davis, here you go:

class Robot: Machine {
    override func move (direction: String) {
        switch direction {
        case "Up":
            self.location.y++
        case "Down":
            self.location.y--
        case "Left":
            self.location.x--
        case "Right":
            self.location.x++
        default: break
        }
    }
}

By the way, there's a bug in the challenge code that makes anything you enter look green. That's caused by the single quote inside the double quotes in the function:

    func move(direction: String) {
        print("Do nothing! I'm a machine!")
    }

If you change I'm to Im the color coding returns to normal, and the editor will accept it.

I reported this to Treehouse over a month ago, but heard nothing back from them about it, and clearly they haven't fixed it yet.