BLACK FRIDAY SALE: Save 50% on all my Swift books and bundles! >>

SOLVED: Optionals Summary Question 7

Forums > 100 Days of SwiftUI

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

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


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.


Hacking with Swift is sponsored by Guardsquare

SPONSORED AppSweep by Guardsquare helps developers automate the mobile app security testing process with fast, free scans. By using AppSweep’s actionable recommendations, developers can improve the security posture of their apps in accordance with security standards like OWASP.

Learn more

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.

Unknown user

You are not logged in

Log in or create account

Link copied to your pasteboard.