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Ricardo Gonzalez
2,286 PointsWhat does it mean by instance?
Forgot what an instance is so can someone help?
class Button {
var width: Double
var height: Double
init(width:Double, height:Double){
self.width = width
self.height = height
}
class RoundButton: Button {
var cornerRadius = 5.0
}
}
Caleb Kleveter
Treehouse Moderator 37,862 PointsGary, just thought I might tell you that if you want to answer a question you should post it as an answer vs. a comment. One reason is because you can get up-voted and marked as best answer on answers, but not comments.
Gary Calhoun
10,317 PointsOh thank you I see the section now I have to scroll down to the answer section lol
Greg Kitchin
31,522 PointsI've not done the IOS course, but in general, an instance is a working object, that is derived from a class. You can imagine the class as a cookie cutter, that has it's own characteristics, and when you want a cookie (the instance), you create one, using the cutter as a template.
1 Answer
Caleb Kleveter
Treehouse Moderator 37,862 PointsFirst, the challenge won't let you pass if the class you create is inside the first one so you need to move it out; second, instance is simply creating a variable or constant and giving it a value, like this:
var rounded = RoundButton(width: 4.0, height: 2.0)
Happy coding!
Gary Calhoun
10,317 PointsGary Calhoun
10,317 PointsI think an instanced object or variable is a clone copy and if the original changes the instanced clone version changes as well. I am not 100 percent sure though.