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Start your free trialZac Duvall
3,662 PointsI cannot "implement" my move method.
It's asking me to implement my "move" method. and I am confused because I thought by coding:
"robot.move(direction: Direction.right)"
that is me implementing the move method. Can someone explain why the code challenge isn't accepting this.
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:
self.location.y += 1
case .down:
self.location.y -= 1
case .left:
self.location.x -= 1
case .right:
self.location.x += 1
}
}
}
Robot().move(in: Direction.left)
2 Answers
Marlon Henry
6,885 PointsFull code that works, just did the challenge
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.y += 1
case .down:
self.location.y -= 1
case .left:
self.location.x -= 1
case .right:
self.location.x += 1
}
}
}
Marlon Henry
6,885 PointsRemove default: location
First off your switch is exhaustive so it's not needed and secondly you are saying the default case location which is a type of Point(which is nil at the point, which will never be called but could crash the app if it was)
Zac Duvall
3,662 PointsI have removed the default altogether. But my code still isn't passing the challenge. It's still asking for me to "implement the move method"
and I simply don't know what else to do.