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iOS Swift Functions and Optionals Optionals What is an Optional?

Josh Schlabach
Josh Schlabach
1,771 Points
Posted by Josh Schlabach
Josh Schlabach
1,771 Points

Not quite understanding this.

I don't understand what i did wrong

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 == names {
println("Found")
}
search("Doc")

1 Answer

Sean Do
Sean Do
11,933 Points
Sean Do
Sean Do
11,933 Points

Using the if-let statement, assign the value from the search function to a constant named result. If the name was found, use println to print out the string "Found". When calling the search function, pass it the name "Doc".

You didn't assign the value from the search function to result.

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