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Start your free trialRaphael Varquez
4,758 PointsCreating a Generic Type Challenge 4/5
Need help trying to make an instance method that appends a number to the end of the array.
struct Queue<Element>{
var array: [Element] = []
var isEmpty: Bool {
if array.count == 0 {
return true
} else {
return false
}
}
var count: Int {
let index = array.count
return index
}
func enqueue(_ number: Element) {
array.append(number)
}
}
1 Answer
nickyp
2,140 PointsYou have to put the keyword mutating in front of your instance method
mutating func enqueue(_ element: Element) {
array.append(element)
}