Question 131463 in Xcode Question posted in
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Xcode – Changing value in Dictionary in a Array in UserDefaults

I have a problem changing the value of a Dictionary in a Array

var array = (defaults.array(forKey: "Transactions")! as! [Dictionary<String, Any>])
        
(array.reversed()[index]["Title"] as! String) = titleTextField.text! // Cannot assign to immutable expression of type 'String'

Cannot assign to immutable expression of type ‘String’

This is the error I get back

Is there a solution to this problem?

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2

Answers


  1. 0

    As Joakim points out, array.reversed() returns an immutable array.

    Try this:

    guard 
  var array = (defaults.array(forKey: "Transactions")! as? [Dictionary<String, Any>]),
  let newText = titletextfield.text,
array[array.count-index]["Title"] = newText

    (And then re-save your array to UserDefaults)

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  2. 0

    One more step will work

    if var array = UserDefaults.standard.array(forKey: "Transactions") as? [Dictionary<String, Any>], let valueText = titleTextField.text {
    array.reverse()
    array[index]["Title"] = valueText
 }
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