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

Posted by Abraham Zamudio
Abraham Zamudio
1,896 Points

Need help with class methods

We need to provide a means to increase the size of our Button. So we are going to add a method named incrementBy which will accept a parameter named points. (Within the method add points to the width and height properties).

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

  init(width:Double, height:Double){
    self.width = width
    self.height = height
  }
}
Jhoan Arango
Jhoan Arango
14,575 Points

Do you want an answer to solve this ? or do you want an explanation about something you are not understanding ? I don’t want to spoil your answers if you don’t understand something.

Abraham Zamudio
Abraham Zamudio
1,896 Points

I understand the concept just sometimes the questions confuse me so when I see the answer I then understand.

Abraham Zamudio
Abraham Zamudio
1,896 Points

I'm guessing its somewhere along the lines of

func incrementBy(points: Double) -> Double { return ................

Jhoan Arango
Jhoan Arango
14,575 Points

Oh ok, well yeah you are close.. let me know if you want the complete answer, I can help you with that.

Abraham Zamudio
Abraham Zamudio
1,896 Points

Yeah if you could give me the complete answer so I can see what I need that will help.

1 Answer

Jhoan Arango
Jhoan Arango
14,575 Points

Hey Abraham:

As requested here is the answer :

class Button {
  var width: Double
  var height: Double

  init(width:Double, height:Double){
    self.width = width
    self.height = height
  }
  func incrementBy(points: Double){ // created a method
  width += points // then we added points to the variables
  height += points 
  }
}

hope that clears it for you..

Abraham Zamudio
Abraham Zamudio
1,896 Points

Thanks again for your help I appreciate it.

Jhoan Arango
Jhoan Arango
14,575 Points

Yeah, no problem man..