需要在核心数据中保存打乱的顺序

我正试图打乱核心数据中数组的顺序。现在代码打乱了顺序,它试图保存打乱的顺序,但当我重新加载类时,原始顺序仍然存在。

我试图做的是在下面的代码中。YESR正在调试部分打印。

var songs = [Song]()
var index = Int()
var singer: Singer?

override func viewDidLoad() {
    super.viewDidLoad()
 
    if let singer = singer {
        songs = DataManager.shared.songs(singer: singer)
    }
    tableView.reloadData()
    
    
}
 @objc func shuffleButtonPressed() {
    print("shuffle")

    // Shuffle the songs
    songs.shuffle()

    // Update the 'order' attribute for each song
    for (index, song) in songs.enumerated() {
        song.order = Int16(index)
    }

    do {
        try DataManager.shared.save() // Assuming 'DataManager.shared' is your Core Data manager
        tableView.reloadData()
        
        print("yesr")
    } catch {
        // Handle error while saving
        print("Error saving shuffled songs: \(error)")
    }
}`