How to create a default instance object of custom class with SwiftUI

Question

I have a class ScanItem defined as follows:

class ScanItem {
    let title: String
    let content: String

    init(title: String, content: String) {
        self.title = title
        self.content = content
    }
}

I often need a default object of this class. I know I can pass default value to each variable of the class, but my question is: is there a mean to create default instance of this class, that could be used like this:

let newScan = ScanItem.defaultInstance

What exactly do you mean by a default instance? A scan item with an empty string title and content? — Alexander, Nov 08 '21 at 12:08

Joakim Danielson · Accepted Answer · 2021-11-08T09:37:17.690

1

Create a static property that returns a default instance

extension ScanItem {
    static var defaultInstance {
        let item = ScanItem()
        item.title = "<default title>"
        item.content = "<default content>"
        
        return item
    }
)

edited Nov 08 '21 at 09:37

answered Nov 08 '21 at 09:22

Joakim Danielson

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Perfect ! I just had to change "static let" to "static var". Thank you ! – jeandemeusy Nov 08 '21 at 09:33
Yes, sorry that was a typo. – Joakim Danielson Nov 08 '21 at 09:37

How to create a default instance object of custom class with SwiftUI

1 Answers1