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iOS Generics in Swift Generic Types Creating a Generic Type

Posted by Amit Yadav
Amit Yadav
4,662 Points

Getting Error:Bummer! Your code could not be compiled. Please click on "Preview" but no error shown in output.html

NO error's instructions are shown in output.html

generics.swift 
struct Queue<Element> {
var array = [Element]()

var isEmpty: Bool {
  if(array.count == 0) {return true} else { return false}
}

var count: Int  {
return array.count
}

 mutating func enqueue(element: Element) {

}
}

1 Answer

Chris Stromberg
PLUS
Chris Stromberg
Courses Plus Student 13,389 Points
Chris Stromberg
Chris Stromberg
Courses Plus Student 13,389 Points

The following function in your code does not do anything. 

mutating func enqueue(element: Element) {

}

It should append the Generic to your array.

mutating func enqueue (_ element : Element) {
        array.append(element)
    }
Amit Yadav
Amit Yadav
4,662 Points

Thanks Chris, I was not omitting external parameter of enqueue func, that's why my code snipped was not getting compiled itself. After omitting external param as you mentioned in your code snipped, I am able to compile the program now. Good catch. Thanks for your help.