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Shaun Maclellan
1,364 PointsCode Challenge: Classes and Their 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).
class Button {
var width: Double
var height: Double
init(width:Double, height:Double){
self.width = width
self.height = height
}
func incrementBy(points: Double) -> Double
reutrn (width*)
}
I am not sure what it should be incremented by and what type the points is?
3 Answers
kaitlanlang
3,042 PointsI got it working. tree houses parser accepted it, Xcode did too, however when i called function it gave a literal error. hopefully next question gets to the root. the below code is the correct answer to question. plug it into Xcode and type Button.incrementBy( etc.....) and see if you can make sense of error you get ( though that error is not part of question.)
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
}
}
Shaun Maclellan
1,364 PointsThank you so much for the help and yes it wasn't the clearest question. That's what I was most confused about.
gökhan sayılgan
2,285 Pointswell that really works but i still didn't understand how to add a value of double to var in class
kaitlanlang
3,042 Pointskaitlanlang
3,042 PointsI have not yet solved this but 'points should be of type double. the way question is presented is pretty lame. The purpose of function/method is to increase size, i think what they are saying is you add the value of points to width and height ( i.e if width was 20 and height was 10 and the value points from incrementBy was 5 then the output for width would be 25 and output for height would be 15)
in the end of video amit showed you can do it without a return e.g. something like
func incrementBy(points: Double) { width += points height += points }
however I can't get it to work i am close but not there. I would kill for more clarity in the questions on this course it costs so much time. Hope my thoughts help