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iOS Build a Simple iPhone App with Swift 2.0 Getting Started with iOS Development Swift Recap Part 2

The code does not work.

classes.swift
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! Im a machine!")
    }
}

class Robot: Machine {

  init(x: Int, y: Int) {
    super.init(x:x, y:y)
  }
  override func move(direction: String) {
    if direction == "Up" {
      y += 1
    }

    if direction == "Down" {
      y -= 1
    }

    if direction == "Left" {
      x += 1
    }

    if direction == "Right" {
      x -= 1
    }
  }
}
Martin Wildfeuer
Martin Wildfeuer
Courses Plus Student 11,071 Points

Hey there! What error messages are you seeing? Please paste your code into an Xcode playground, it will give you valuable information on what the problem is.

1 Answer

swift_lint.swift:28:15: error: extra argument 'x' in call super.init(x:x, y:y) ^ ~ swift_lint.swift:32:7: error: use of unresolved identifier 'y' y += 1 ^ swift_lint.swift:36:7: error: use of unresolved identifier 'y' y -= 1 ^ swift_lint.swift:40:7: error: use of unresolved identifier 'x' x += 1 ^ swift_lint.swift:44:7: error: use of unresolved identifier 'x' x -= 1 ^