Project 7 - UUID id property

[sdavids]

Hi,

you might want to change your chosen fix for the "Immutable property will not be decoded because it is declared with an initial value which cannot be overwritten" problem with the UUID id property and the Codable conformance.

struct ExpenseItem: Identifiable, Codable {
  let id = UUID()
  let name: String
  let type: String
  let amount: Double
}

⇓

struct ExpenseItem: Identifiable, Codable {
  private(set) var id = UUID()
  let name: String
  let type: String
  let amount: Double
}

instead of

struct ExpenseItem: Identifiable, Codable {
  var id = UUID()
  let name: String
  let type: String
  let amount: Double
}

---

The current fix allows item.id = UUID()—breaking the concept of having a stable unique ID:

Button("💣") {
  let same = UUID()
  for i in expenses.items.indices {
    expenses.items[i].id = same
  }
}

List {
  ForEach(expenses.items) { item in
    // ... depends on Identifiable and stable unique IDs
  }
}

Whereas the proposal would prohibit it but still allow struct initialization and decoding.

[Brai-hit]

Excellent 🫡