NEW: My new book Pro SwiftUI is out now – level up your SwiftUI skills today! >>

SOLVED: A quick question about the syntax of a @Published variable

Forums > Swift

In Paul's iDine example we have an Order object

    class Order: ObservableObject {

        @Published var items = [MenuItem]()

what does the () notify here? Default getters and setters?


var items: [MenuItem]  // This is a declaration of a variable, an array of MenuItems
var items = [MenuItem]()  // This declares a variable and assigns the variable to a new instance of the type
// Basically the () calls an init


Oh yes, thanks @wieniek for clarifying that ... for some reason I couldn't parse it, not used to it. We are creating an empty array of a certain type using initializer syntax; specifically initializing Array<Element> where <Element> is our MenuItem object type. Got it!

Perhaps I was lookimg for var items: [MenuItem] = [] alternative.


Hacking with Swift is sponsored by Judo

SPONSORED Let’s face it, SwiftUI previews are limited, slow, and painful. Judo takes a different approach to building visually—think Interface Builder for SwiftUI. Build your interface in a completely visual canvas, then drag and drop into your Xcode project and wire up button clicks to custom code. Download the Mac App and start your free trial today!

Try now

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.