Case Insensitive Compare with Core Data and Swift

Question

The following code doesn't work:

let sortDescriptor = NSSortDescriptor(key: "name", ascending: true, selector:"caseInsensitiveCompare")

And gives the following error: 'NSInvalidArgumentException', reason: 'unsupported NSSortDescriptor selector: caseInsensitiveCompare'

Seemed to work fine in Objective-C. Any ideas on why this might be?

Edit: seems like this may not be possible with Core Data/SQLite. In that case, is the best option to get the array and sort it in code afterwards?

Answer 1

Swift 5, SwiftUI syntax

self._contacts = FetchRequest(
            entity: Contact.entity(),
            sortDescriptors: [
                NSSortDescriptor(key: "name", ascending: true, selector: #selector(NSString.caseInsensitiveCompare(_:)))
            ],
            predicate: predicate
        )