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iOS Swift Functions and Optionals Optionals What is an Optional?

Posted by Nigel Hall
Nigel Hall
4,650 Points

What is wrong with my code? I keep getting an error in my if let result line.

I cant figure this out. Why was there an extra return with a "" in it? Why is it not working? Its almost exactly like the example in the video

search.swift 
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") {
println("Found")
}

1 Answer

kjvswift93
kjvswift93
13,515 Points
kjvswift93
kjvswift93
13,515 Points

You are just missing the parameter "name" when calling the search function.

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(name: "Doc") {
  println("Found")
  }
Nigel Hall
Nigel Hall
4,650 Points

Thanks. That worked. But I still dont understand why I need the name parameter when in the video example he didnt even include the aptnumber parameter. He only typed in the number.