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

Ayub Ali
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.a{fill-rule:evenodd;}techdegree
Ayub Ali
Front End Web Development Techdegree Student 10,462 Points

Hello I tried the quiz but it isn't giving me a preview anymore. It just says compiler error

Okay here is my code

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 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 { override func move(direction: String) { switch direction { case "Up": location.y += 1 case "Down": location.y -= 1 case "Right": location.x += 1 case "Left": location.x -= 1 default: break } } }

I am pretty sure that I am correct. I went through the teamtreehouse iOS forms and it seems almost everybody was having the same problem.

However every time I run this code the compiler just gives me an compiler error, but there is no output? So I am unsure how to fix my error Does anybody know a way around this glitch?

Thanks

robots.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 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 {
 override func move(direction: String) {
    switch direction {
      case "Up":
        location.y += 1
      case "Down":
        location.y -= 1
      case "Right":
        location.x += 1
      case "Left":
        location.x -= 1
      default:
        break
    }
  }
}

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points

It is not a glitch it looked as they you removed the underscore before

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 Machine {
   var location: Point

   init() {
            self.location = Point(x: 0, y: 0)
        }
//Here 
   func move(_ direction: String) {
            print("Do nothing! Im a machine!")
        }
    }

class Robot: Machine {
//and here
 override func move(_ direction: String) {
    switch direction {
      case "Up":
        location.y += 1
      case "Down":
        location.y -= 1
      case "Right":
        location.x += 1
      case "Left":
        location.x -= 1
      default:
        break
    }
  }
}