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iOS Swift Functions and Optionals Optionals What is an Optional?

Josh Smith
Josh Smith
1,049 Points

if-let statement with print(ln) going wrong

I'm going wrong on the 2nd part of this task, help much appreciated!

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 {
    println("Found")


return search "Doc"  

}

1 Answer

Chase Marchione
Chase Marchione
155,055 Points

Hi Josh,

1) We need to create an if-let statement that will store the value from running the search function into a constant that the challenge wants us to name 'result'. We are told to search for the name of "Doc", so we'll specify that as our name to search for.

2) Should the string be found, we'll use the println method to print out the string of "Found".

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")
}

Hope this helps!

Josh Smith
Josh Smith
1,049 Points

That helps a lot CJ thanks. I'm just struggling a lot with understanding the questions and then working out how to put everything together from what has been asked.