format

The format filter formats a given string by replacing the placeholders.

{{ 'I like %s and %s.' | format(foo, 'bar') }}

{# outputs I like foo and bar
  if the foo parameter equals to the foo string. #}

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first

The first filter returns the first "element" of a sequence, a mapping, or a string.

group_by

The group_by filter groups array items by a given key.