I have this code in Swift:
guard let user = username else{
return nil
}
But I'm getting the following errors:
Nil is incompatible with return type String
Any of you knows why or how I return nil in this case?
I'll really appreciate your help
You have to tell the compiler that you want to return nil. How do you that? By assigning ? after your object. For instance, take a look at this code:
func newFriend(friendDictionary: [String : String]) -> Friend? {
guard let name = friendDictionary["name"], let age = friendDictionary["age"] else {
return nil
}
let address = friendDictionary["address"]
return Friend(name: name, age: age, address: address)
}
Notice how I needed to tell the compiler that my object Friend, which I'm returning, is an optional Friend?. Otherwise it will throw an error.
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