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iOS Closures in Swift First Class Functions Higher Order Functions

Rea Rahhal
Rea Rahhal
Courses Plus Student 4,732 Points

make sure you are declaring a function named transform lol

really confused....

// Enter your code below
extension String {
func transform (argument: String -> String) -> String {
    return argument(self)

1 Answer

Hi there,

If you include the underscore to omit the external label and wrap your first (String) in brackets, your code is fine.