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

Cant see where I'm going wrong.....

Hi there,

Im definitely missing something here. I feel like I'm nearly there but can't quite see whats missing. Any help would be greatly appreciated!!

robots.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!")
  }
}

// Enter your code below

let buttons: [String] = ["Up", "Down", "Left", "Right"]

class Robot: Machine {
    override func move(_ direction: String) {
        for button in buttons {
        switch button {
        case "Up": self.location.y =+ 1
        case "Down": self.location.y -= 1
        case "Left": self.location.x -= 1
        case "Right": self.location.x += 1
        default: print("invalid key entry")
        }
        }
    }
}

1 Answer

robertrinca
PLUS
robertrinca
Courses Plus Student 11,316 Points

Pretty simple, on line 31 you have it as =+ when it should be +=

:)