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Ken Okiebisu
9,673 PointsSwift:Instances of Classes
I tried writing down the codes but because I am don't fully understand initializers, I'm pretty stuck right now. Can someone show me how to solve this problem?
// Enter your code below
class Shape {
var numberOfSides: Int
init (numberOfSides: Int) {
self.numberOfSides = numberOfSides
}
}
let someShape = Shape()
2 Answers
Ryan Maneo
4,342 PointsHello, in this case, all you need to do is give an initial value to numberOfSides, like this:
class Shape {
var numberOfSides: Int = 1
}
let someShape = Shape()
What you did would have worked as well, however, this specific code challenge requires the initial value be set to the variable directly.
Ken Okiebisu
9,673 PointsThank you! It worked! You mentioned that initial value can be set to the variable directly and does that mean that we don't have to write init for every classes but set variables directly?
Ryan Maneo
4,342 PointsHello, it depends on the issue, If you wanted to have something that could take no value at all, then you would use an init method, rather than adding it directly. Since this is a Shape class, it must have at least 1 side, therefore a value set to the variable itself works out in this case.
Ken Okiebisu
9,673 PointsThank you! Now I got it!