iOS Closures in Swift First Class Functions Higher Order Functions

Make sure you're declaring a function named transform

the compiler is asking me something have already done

functions.swift
// Enter your code below

extension String {

func transform(aString: (String) -> String) -> String {

return self
}

}

3 Answers

Magnus Hållberg
Magnus Hållberg
11,343 Points

The challenge say you should omit the external name, that's one problem. The other is that you are only returning self without using the input function, instead you should return aString(self).

thks but doest work anyway

Magnus Hållberg
Magnus Hållberg
11,343 Points

Can you post your updated code? Because I just passed the challenge with this code, your code, with an omitted external name and the return I mentioned in my answer.

extension String {

func transform(_ aString: (String) -> String) -> String {

return aString(self)
}

}

I've passed it too, thks anyway