``map`` ======= The ``map`` filter applies an arrow function to the elements of a sequence or a mapping. The arrow function receives the value of the sequence or mapping: .. code-block:: twig {% set people = [ {first: "Bob", last: "Smith"}, {first: "Alice", last: "Dupond"}, ] %} {{ people|map(p => "#{p.first} #{p.last}")|join(', ') }} {# outputs Bob Smith, Alice Dupond #} The arrow function also receives the key as a second argument: .. code-block:: twig {% set people = { "Bob": "Smith", "Alice": "Dupond", } %} {{ people|map((last, first) => "#{first} #{last}")|join(', ') }} {# outputs Bob Smith, Alice Dupond #} Note that the arrow function has access to the current context. Arguments --------- * ``arrow``: The arrow function