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iOS Object-Oriented Swift Classes and Objects Classes and Their Methods

Posted by Garrett Reid
.a{fill-rule:evenodd;}techdegree
Garrett Reid
Front End Web Development Techdegree Student 17,532 Points

How to call this particular method?

So, i copied this Class over into my Xcode, and created an instance called "room". I tried the dot syntax and it seems as though it can't find the method. i'm not getting any errors in the Class. If you can provide help in any way, that would be much appreciated! thank you!

Button.swift 
class Button {
  var width: Double
  var height: Double

  init(width:Double, height:Double){
    self.width = width
    self.height = height


func incrementBy(points: Double) -> Void {
    self.width += points
    self.height += points
}
  }
}

2 Answers

Daniel Sattler
Daniel Sattler
4,867 Points
Daniel Sattler
Daniel Sattler
4,867 Points

Your closing curly bracket for the init method is misplaced ;-)

Take it away from behind incrementBy function and set it before... so it looks some like this:

class Button {
  var width: Double
  var height: Double

  init(width:Double, height:Double){
    self.width = width
    self.height = height
  }
  func incrementBy(points:Double){
    width += points 
    height += points 
  }
}
Garrett Reid
.a{fill-rule:evenodd;}techdegree
Garrett Reid
Front End Web Development Techdegree Student 17,532 Points

OH! I'm dumb xD Thank you sir! Now I'll know to check for that xP

kjvswift93
kjvswift93
13,515 Points

Is it necessary to return a type Void on the incrementBy method if you reference width and height using self within the body of the function, as Garrett did in his code?

Daniel Sattler
Daniel Sattler
4,867 Points
Daniel Sattler
Daniel Sattler
4,867 Points

nope, you are NOT dumb... happens every now and then for EVERYONE... trust me ;-) hehe

sometimes i spend an hour or more debugging just to find out i forgot or misplaced something somewhere... :-P