https://www.swiftbysundell.com/posts/the-power-of-key-paths-in-swift

sorted-keypath.swift

/// Sort any sequence by keypath conforming to Comparable
extension Sequence {
    func sorted<T: Comparable>(by keyPath: KeyPath<Element, T>) -> [Element] {
        return sorted { a, b in
            return a[keyPath: keyPath] < b[keyPath: keyPath]
        }
    }
}

/// Example usage
playlist.songs.sorted(by: \.ratings.worldWide)