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iOS Swift Functions and Optionals Optionals What is an Optional?

Posted by Marco Leo
Marco Leo
1,007 Points

Don't understand what i'm doing wrong, can someone explain please?

Using if-let statement task 2 of 2

Thanks,

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 names = search("Doc")
{
    println("found = \(names)")
}

1 Answer

Oliver Pinchbeck
Oliver Pinchbeck
2,732 Points
Oliver Pinchbeck
Oliver Pinchbeck
2,732 Points

You need a different string to be returned by the println, so have a look at the last two lines here:

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")
}