How to remove duplicated items in array on Twig

Question

How to remove duplicated items in array on Twig?

I have array value in twig such as.

{{ set array = [\"testA         


        

Answer 1

For symfony !

Service : app/config/service.yml

twig_array_unique_function:
    class: AppBundle\Twig\ArrayUniqueFunction
    tags:
        - { name: twig.function }

Class : src/AppBundle/Twig/ArrayUniqueFunction.php

Thk : https://github.com/getgrav/grav/blob/develop/system/src/Grav/Common/Twig/TwigExtension.php