gistfile1.n

  [Unit]
  public class ReactiveToDo
  {
    [Dto] public class Task { Name : string; IsDone : bool; Priority : string; }

    mutable _tasks = List.[Task]();
    mutable _todoName = "New task";
    mutable _todoPriority = "high";
  
    public this() 
    {
      _ = server.Load(tasks => SetTasks(tasks));
    }
    
    SetTasks(tasks : List[Task]) : void 
    {      
      _tasks = tasks;      
    }
    
    Add() : void
    {
      _tasks.Add(Task(_todoName, false, _todoPriority));
      
      SaveToServer();
      
      _todoName = "Task #" + _tasks.Count;
      _todoPriority = "high";
    }
  
    SaveToServer() : void
    {
      _ = server.Save(_tasks, status => window.console.log(status))      
    }
    
    [Html]    
    public View() : string
    {
      <#
        <table class="reactive-todo-table">
          <tr>
            <th>Priority</th><th>Task</th><th>Status</th>
          </tr>
          <tr $foreach(task in _tasks.OrderBy(t => t.Priority))>
            <td>$(task.Priority)</td>
            <td>$(task.Name)</td>
            <td><input type="checkbox" event-change="$SaveToServer" checked="$(task.IsDone)" /></td>
          </tr>
        </table>
        
        <div>
          <input value="$_todoName" />
          <select value="$_todoPriority">
            <option>high</option>
            <option>low</option>
          </select>
          <button click="$Add">Add</button>
        </div>
      #>
    }
      
    [SignalR]
    public class Server
    { 
      static mutable _db : List[Task] = List();

      static this()
      {
        _db.Add(Task("Write article", false, "high"));
        _db.Add(Task("Fix website bugs", false, "high"));
        _db.Add(Task("Add new functionality", false, "low"));
      }	  
      
      public Load() : List[Task]
      {
        _db        
      }
      
      public Save(tasks : List[Task]) : string
      {
        _db = tasks;
        
        broadcast client.SetTasks(_db);
        
        "ok"
      }
    }
  }

Сделайте аналогичный пример на других средствах, чтобы было видно насколько ваша реализация короче, проще и нагляднее.