Migration swift to swift 3 NSMutableArray - ios

Question

When i made the migration swift code i have this error "Type 'Any' has no subscript members" and my code is
var myArray: NSMutableArray = []
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
let cell = UITableViewCell()
if let name = self.myArray[(indexPath as NSIndexPath).row]["FirstName"] as? String{
cell.textLabel?.text = ("\(name)")
}
}
I tried many things but i do not have a answer for this problem.

Answer 1

First of all: Do not use NSMutableArray in Swift!
The error occurs because the compiler needs to know if the object is subscriptable by key. Using a native Swift type solves the problem.
var myArray = [[String:Any]]()
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
let cell = UITableViewCell() // will not work
if let name = self.myArray[indexPath.row]["FirstName"] as? String { // optional binding actually not needed
cell.textLabel?.text = name // please no string interpolation
}
return cell // mandatory!
}
Note: Consider that UITableViewCell() will not work. The recommended way are reusable cells
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)

Answer 2

You should use
Generics
dequeueReusableCell
IndexPath instead of NSIndexPath
so here's the code
import UIKit
class Controller: UITableViewController {
var persons = [[String:String]]()
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
let cell = tableView.dequeueReusableCell(withIdentifier: "MyCellID") ?? UITableViewCell(style: .default, reuseIdentifier: "MyCellID")
cell.textLabel?.text = persons[indexPath.row]["FirstName"]
return cell
}
}