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iOS Closures in Swift First Class Functions Higher Order Functions

Rea Rahhal
PLUS
Rea Rahhal
Courses Plus Student 4,732 Points
Posted by Rea Rahhal
Rea Rahhal
Courses Plus Student 4,732 Points

make sure removeVowels accepts a string and returns a string

don't know what's wrong...

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

  func removeVowels(from value:String) -> String {

        var output: String = ""
        for char in value.characters {

            if !(char == "a" || char == "A" || char == "e" || char == "E" || char == "I" || char == "i" || char == "o" || char == "O" || char == "u" || char == "U") {
                output.append(char)
            }
        }
        return output

    }
  }