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Joy Whitehead
1,223 PointsUnresolved identifier?
I've been trying to complete task 2 for optionals, and to me the code looks fine, but it says that "names" is an unresolved identifier? I've tried everything I can think of. Is it just me or is there something messed up?
Code 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 nil
}
let search = names("Doc") {
println("Found")
}
2 Answers
Steve Hunter
57,712 PointsHi Joy,
You've not quite handled the returned optional from the search function correctly.
search returns either a string or nil, depending on whether the name is found. That returned value needs assigning to something. The question says:
Using the if-let statement, assign the value from the search function to a constant named result.
So, you need to start with a constant called result and assign the value returned by search to that. Phew!
if let result = search(name: "Doc") // starts you off
So, that's the if-let used to separate the two possible outcomes (String or nil) and the outcome is stored in result.
Then you need to manage the output, which you did just fine:
if let result = search(name: "Doc"){
println("Found")
}
I hope that helps.
Steve.
Joy Whitehead
1,223 PointsThanks, this helped me a lot! Sorry for the trouble.
Steve Hunter
57,712 PointsNo problem! Glad to be of help.
Steve.