``length`` ========== The ``length`` filter returns the number of items of a sequence or mapping, or the length of a string. For objects that implement the ``Countable`` interface, ``length`` will use the return value of the ``count()`` method. For objects that implement the ``__toString()`` magic method (and not ``Countable``), it will return the length of the string provided by that method. For objects that implement the ``Traversable`` interface, ``length`` will use the return value of the ``iterator_count()`` method. .. code-block:: twig {% if users|length > 10 %} ... {% endif %}