The is operator will apply a test to a variable which will return a boolean.
twig
{% if 2 is even %}
...
{% endif %}The result can be negated using the not operator:
twig
{% if 3 is not even %}
...
{% endif %}The is operator will apply a test to a variable which will return a boolean.
{% if 2 is even %}
...
{% endif %}The result can be negated using the not operator:
{% if 3 is not even %}
...
{% endif %}