anchor.diff:            &lt;input #todotext (keyup)="doneTyping($event)"&gt;
             &lt;button (click)="addTodo(todotext.value)"&gt;Add Todo&lt;/button&gt;
                   `,
  -        directives: [NgFor, NIf]
  +        directives: [NgFor]
         })
         class TodoList {
           todos: Array&lt;string&gt;;
  
positive.code:       @View({
          template: `
            &lt;ul&gt;
              &lt;li *ngfor="#todo of todos"&gt;
                {{ todo }}
              &lt;/li&gt;
            &lt;/ul&gt;
  
negative.code:             '&lt;/ul&gt;' +
              '&lt;input #textbox (keyup)="doneTyping($event)">' +
              '&lt;button (click)="addTodo(textbox.value)"&gt;Add Todo&lt;/button&gt;',
            directives: [angular.NgFor]
          })
        ];
  
  