Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
Roman Lopez
2,211 PointsOverriding method question! I cant seem to get why it doest work.
Could anyone here please take a look at my code and point out why I wont take it and let me pass to the next step? Thank you!
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
}
}
class RoundButton: Button {
var cornerRadius: Double = 5.0
override func incrementBy(points: Double = 7.0) {
width += points
height += points
}
}
2 Answers
Jhoan Arango
14,575 PointsHello:
The functions signature can't change if you are overriding it, it has to remain the same.
Try 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
}
}
class RoundButton: Button {
var cornerRadius: Double = 5.0
override func incrementBy(points: Double) {
width += 7.0
height += 7.0
}
}
It should work..
Let me know if it works.
Good luck
Ritesh R
Courses Plus Student 17,865 PointsThe incrementBy function does not have an external parameter name so just insert an "_" (underscore)
override func incrementBy(_ points: Double = 7.0) { width += points height += points }
Ritesh R
Courses Plus Student 17,865 Pointsoverride func incrementBy(_ points: Double = 7.0) {
width += points
height += points
}
Jhoan Arango
14,575 PointsYes, that is what Xcode will tell you because it's running on Swift 2.0. But for the challenge it will be Ok.
On Swift 2.0 to name an external parameter you do it this way
func incrementBy(points points: Double ){}
Remember to use this function override to pass the challenge.
override func incrementBy(points: Double) {
width += 7.0
height += 7.0
}