Downsides to using Let- !Use of unresolved identifier 'address'

Question

I have been follow along with all of the videos and keeping up pretty well, most of my issues have been with syntax (leaving out a curley brace or comma when needed) I canusually fix those pretty quickly.

This issue is with the downsides of using let. I keep getting the same error in xcode 9.2 and xcode 8.2 here is my code I dont know why i am getting this error and it is really frustrating! any help is appreciated

struct Friend {
    let name: String
    let age: String
    let address: String?
}

func new(friendDictionary: [String : String]) -> Friend? {
    if let name = friendDictionary["name"], let age = friendDictionary["age"] {
        return Friend(name: name, age: age, address: address)
    } else {
        return nil
    }
}

Answer 1 · 2018-01-18T13:34:14Z

January 18, 2018 1:34pm

Hi Joseph,

What's going wrong here, is that you're using a value that's not declared anywhere. This happens in this line:

return Friend(name: name, age: age, address: address)

You give an address value to the initialiser, but you haven't defined it anywhere. This results in the compiler telling you you're using an unresolved identifier. What you can do to fix this, is either: A. Define an address and pass it to the initialiser B. Since address is an optional property on the struct, you can also pass nil to the initialiser to not give an address to the person

Hope this helped,

Regards, Jari

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Joseph Pizzo

Joseph Pizzo

Downsides to using Let- !Use of unresolved identifier 'address'

1 Answer

Jari Koopman

Jari Koopman