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

Posted by perpetual makayi
perpetual makayi
8,441 Points

enumeration and optional in swift 3

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
    default:
        return location.x -= 1
    }
}
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:
            return location.y += 1
        case .Down:
            return location.y -= 1
        case .Right:
            return location.x += 1
        default:
            return location.x -= 1
        }
    }