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iOS Swift Functions and Optionals Optionals What is an Optional?

Posted by Raymond Espinoza
Raymond Espinoza
1,989 Points

optional

func search(#name: String) -> String? {
    let names = ["Doc","Grumpy","Happy","Sleepy","Bashful","Sneezy","Dopey"]
    for n in names {
        if n == name {
            return n
        }
    }
    return nil
}
if let result = search("Doc") {
print("Found: \(result)")
}

Cant seem to figure This one out i have no clue what i am missing out on this code ?

1 Answer

Chris Shaw
Chris Shaw
26,676 Points

Hi Raymond,

Firstly, I have fixed your code formatting so please have a read of Posting Code to the Forum.

You have a few issues which are not what the challenge is looking for, they are:

  1. The search function has a named parameter called name, when calling functions with a named parameter you also need to include the label in the declaration

  2. You're not using the println function as requested

  3. All you need to print out is the word Found, the value of result isn't needed

if let result = search(name: "Doc") {
  println("Found")
}

Happy coding!