Ordering TableViews by latest time - ios

Question

Currently I am having trouble ordering my table views in the right order. As of right now, they don't change order no matter what. I'm not sure what to add to fix this.
import UIKit
class ListNotesTableViewController: UITableViewController {
var notes = [Note](){
didSet{
tableView.reloadData();
}
}
override func viewDidLoad() {
super.viewDidLoad()
notes = CoreDataHelper.retrieveNotes()
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return notes.count;
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath : IndexPath) ->ListNotesTableViewCell{
let cell = tableView.dequeueReusableCell(withIdentifier: "listNotesTableViewCell", for: indexPath) as! ListNotesTableViewCell
let row = indexPath.row
let note = notes[row]
cell.noteTitleLabel.text = note.title
cell.notePreview.text = note.content;
cell.noteModificationTimeLabel.text = note.modificationTime?.convertToString()
return cell
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let identifier = segue.identifier {
if identifier == "displayNote" {
print("Table view cell tapped")
let indexPath = tableView.indexPathForSelectedRow!
let note = notes[indexPath.row]
let displayNoteViewController = segue.destination as! DisplayNoteViewController
displayNoteViewController.note = note
} else if identifier == "addNote" {
print("+ button tapped")
}
}
}
override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
CoreDataHelper.delete(note: notes[indexPath.row])
notes = CoreDataHelper.retrieveNotes()
}
}
#IBAction func unwindToListNotesViewController(_ segue: UIStoryboardSegue){
self.notes = CoreDataHelper.retrieveNotes()
}
}

Answer 1

It seems like your notes is not sorted by time. Whenever you get self.notes = CoreDataHelper.retrieveNotes() you need to sort your array. You can do it like this:
self.notes.sorted(by: { $0.date < $1.date })
Note that the date variable can differ depending on what variable name you have for your time and structure on your Note class.