SOLVED: Optionals Summary Question 7

@sametkarakurt

Jun '21

struct Dog {
    var name: String
    init?(name: String) {
        guard name == "Lassie" else {
            print("Sorry, wrong dog!")
            return nil
        }
        self.name = name
    }
}
let dog = Dog(name: "Fido")

isn't there a mistake? Paul didnt use guard let but it said true.

@roosterboy HWS+

Jun '21

guard checks a condition. Here, the condition is whether or not name is "Lassie".

guard let assigns a value (and can also be used to unwrap an optional) and then uses that value to check a condition. Here, there is no optional to unwrap and nothing is being assigned, so guard let is unnecessary and a simple guard statement is used.

Sponsor Hacking with Swift and reach the world's largest Swift community!

Archived topic

This topic has been closed due to inactivity, so you can't reply. Please create a new topic if you need to.

All interactions here are governed by our code of conduct.