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iOS Swift Functions and Optionals Optionals What is an Optional?

Can anyone help?

This is what i have so far

func search(#name: String?) -> String { let names = ["Doc","Grumpy","Happy","Sleepy","Bashful","Sneezy","Dopey"] for n in names { if n == name { return n } } return "" }

1 Answer

Stone Preston
Stone Preston
42,016 Points

to return an optional type you place a ? after the data type.

inside loop inside the function, if a name is found that matches the name passed into the function you return it.

if the loop does not find a matching name, you return nil. the optional value is what allows you to return nil.

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
}

ty for the help