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iOS Closures in Swift 2 First Class Functions Higher Order Functions

Akshay Kalbhor
PLUS
Akshay Kalbhor
Courses Plus Student 725 Points
Posted by Akshay Kalbhor
Akshay Kalbhor
Courses Plus Student 725 Points

firstLetter function in Challenge Task 2 of 3

I am not sure how to implement the firstLetter function

functions.swift 
// Enter your code below
extension String {
   func modify(aFunction: String -> String) -> String {
        return aFunction(self)
        }
}

func firstLetter(aString: String) -> String {
    return aString.characters.first
}

1 Answer

Helgi Helgason
Helgi Helgason
7,599 Points
Helgi Helgason
Helgi Helgason
7,599 Points

You need to use string interpolation to return the character as a string!