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iOS Swift Functions and Optionals Optionals What is an Optional?

jon kelson
jon kelson
5,149 Points

please can someone help what am I doing wrong

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

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

}

1 Answer

Loubna Aggoun
Loubna Aggoun
4,052 Points

You are not using the right function name (use "search" instead of "name") when you call it, and the argument name is missing (prefix your argument with its name, which is "name:"). Here is the fix:

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