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

Dean Kreseski
Dean Kreseski
2,418 Points
Posted by Dean Kreseski
Dean Kreseski
2,418 Points

Trying to figure this one out, is there anything else I need to implement?

Thanks for your help.

test.swift 
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: self.location += 1 
    case .down: self.location -= 1 
    case .right: self.location += 1 
    case .left: self.location -= 1 

    }

    }
}

1 Answer

Johnny Nguyen
Johnny Nguyen
3,875 Points
Johnny Nguyen
Johnny Nguyen
3,875 Points

You have to access to the stored properties of location by "location.x" or "location.y" to know what stored property the location is using to increase or decrease by 1. You can't use location alone