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Start your free trialMaarten De Kruif
7,314 Pointserror: extraneous argument label 'direction:' in call player.move(direction: .up)
Why is the code not working?
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) {
switch direction {
case .up: location.y += 1
case .down: location.y -= 1
case .right: location.x += 1
case .left: location.x -= 1
}
print(location.x, location.y)
}
}
let player = Robot()
player.location = Point(x: 33, y: 2)
player.move(direction: .up)
player.move(direction: .down)
1 Answer
David Papandrew
8,386 PointsYou are receiving the error because the move method doesn't take an external argument label (the underscore indicates this).
So when you make the method call in your final lines of code, you would write it this way:
player.move(.up)
player.move(.down)
Hope that helps.