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iOS Swift Functions and Optionals Optionals What is an Optional?

Sood Lahiri
PLUS
Sood Lahiri
Courses Plus Student 858 Points
Posted by Sood Lahiri
Sood Lahiri
Courses Plus Student 858 Points

Optionals Objective giving error

I am working on the first objective of the optionals quiz, I have turned the returning string to an optional and I am also returning nil if string has not been found. I am doing everything properly but it keeps telling me there is an error. The instructions are:

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

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

Steve Hunter
Steve Hunter
57,712 Points

I can't see anything wrong with your code. I have checked back through all other posts on this question and the code is the same there too. Indeed, in my Playground, the code I wrote when I went through this course is still there and is identical to yours!

I wonder if the tests behind the compiler have been amended - one for Amit Bijlani !!

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Looks like the compiler is having intermittent issues as I got it to trigger a real error then put the code back as it is above and it worked fine, try it by using the below then use the above if let statement.

if (let result = search(name: "Doc")) {
  println("Found")
}
Steve Hunter
Steve Hunter
57,712 Points

Well spotted - absolutely correct. If you force an error then resubmit correct code, the challenges passes!

How bizarre!

Sood Lahiri
PLUS
Sood Lahiri
Courses Plus Student 858 Points
Sood Lahiri
Sood Lahiri
Courses Plus Student 858 Points

Thanks for the help, seems like there was a compiler error and you first have to show an error and then it compiles properly.