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iOS Swift Functions and Optionals Optionals What is an Optional?

Posted by Matthew Giuliano
Matthew Giuliano
2,749 Points

I'm stuck on the the second coding challenge, could anyone help me out?

Thanks,

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 found = search(name: "Doc") {
    println(found)
    } 
}

1 Answer

Shawn Flanigan
PLUS
Shawn Flanigan
Courses Plus Student 15,815 Points
Shawn Flanigan
Shawn Flanigan
Courses Plus Student 15,815 Points

Matthew,

It looks like you're trying to call the function from within itself. Move your if let statement outside of your search function to get this to work.

Also, make sure you pass your println valid code. Right now, it will be looking for a variable (or constant) called found, which doesn't exist. If you're passing it a string, it should look more like:

 println("Found")

Hope that helps!

Matthew Giuliano
Matthew Giuliano
2,749 Points

My if let statement now looks like this

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

println("Found")

}

But it won't work

Shawn Flanigan
Shawn Flanigan
Courses Plus Student 15,815 Points
Shawn Flanigan
Shawn Flanigan
Courses Plus Student 15,815 Points

Sorry, didn't notice this before, but they ask you to store your result in a variable named result. You were trying to store it in a variable called found and then print it out. In the end your if let statement should look like this:

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

Does that make sense?

Matthew Giuliano
Matthew Giuliano
2,749 Points

It worked, Thank you!