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iOS Swift Functions and Optionals Optionals What is an Optional?

Can you explain the "Did you use println() one time?" error?

I used an if-let statement followed with a println statement. I am not sure why I am recieving this error.

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(name: "Doc"){
    println("Found")
}
}

2 Answers

Caleb Kleveter
MOD
Caleb Kleveter
Treehouse Moderator 37,862 Points

You need to move the if-let statement outside of the 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")
}

I tried that, but it won't let me pass still.