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Start your free trialChase Grainger
4,830 PointsI think this challenge has some bugs in it.
Can someone tell me what is wrong with my code? It seems as though some of the code is being recognized as comments.
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!")
}
}
class Robot: Machine {
override func move(direction: String) {
switch direction {
case "Up": location.y += 1
case "Down": location.y -= 1
case "Left": location.x -= 1
case "Right": location.x += 1
default: break
}
}
}
1 Answer
andren
28,558 PointsThe workspace is a bit bugged true, but the bug only affects the code highlighting. It does not affect the functionality of your code. The issue with your solution is that you are missing the _
that the move
function has as its external parameter name.
When overriding functions the function declaration has to match exactly with the one being overridden, any difference at all will make the override invalid.
So simply adding that _
like this:
class Robot: Machine {
override func move(_ direction: String) {
switch direction {
case "Up": location.y += 1
case "Down": location.y -= 1
case "Left": location.x -= 1
case "Right": location.x += 1
default: break
}
}
}
Will make your code pass the challenge.