Mutable problem

mutable_problem_case.dart

import 'dart:math';

void main() {
  final origin = Mutable()..name = "Origin"..numbers = [1,2,3];
  
  
  /// Imagine this is navigation from screen to screen
  viewOrigin(origin);
  viewWithShuffle(origin);
  viewChangedName(origin);
  viewOrigin(origin);
 
}

/// Screen with origin objetc
void viewOrigin(Mutable m) {
  print(
    """
    Origin is: $m
    """
  );
}

void viewWithShuffle(Mutable m) {
  m.numbers.shuffle();
  
  print(
    """
    WithShuffle is: $m
    """
  );
}

void viewChangedName(Mutable m) {
  m.name = "${Random().nextInt(100)} name ${ Random().nextInt(100)}";
  
  print(
    """
    ChangedName is: $m
    """
  );
}


class Mutable {
  String? name;
  List<int> numbers = [];

  String toString() => """
    Mutable: $hashCode,
    name: $name,
    numbers: ${numbers.join(",")}
  """;
}