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

Posted by Tariq Qazzaz
Tariq Qazzaz
1,660 Points

enum !

hi guys ..

should i add a return value of type Point to the function move ?

i cant understand how to solve it

!

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 left 
    case right
    case up
    case down

        }
    }
}

1 Answer

tromben98
tromben98
13,273 Points
tromben98
tromben98
13,273 Points

Hi here is the solution:

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: location.y += 1
        case .down: location.y -= 1
        case .right: location.x += 1
        case .left: location.x -= 1
        }
    }
}