``length``==========.. versionadded:: 1.33 Support for the ``__toString()`` magic method has been added in Twig 1.33.The ``length`` filter returns the number of items of a sequence or mapping, orthe length of a string.For objects that implement the ``Countable`` interface, ``length`` will use thereturn 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 ``IteratorAggregate`` interface, ``length`` will use the return value of the ``iterator_count()`` method... code-block:: jinja {% if users|length > 10 %} ... {% endif %}