Perfect! 
Thank you Eric :)

On Wednesday, December 23, 2020 at 12:36:01 PM UTC Eric Shulman wrote:

> On Wednesday, December 23, 2020 at 4:16:11 AM UTC-8 Erwan wrote:
>
>> I'm trying to obtain a list of unique "answers" from a list of questions 
>> like this:
>> <$list filter="[tag[question]get[answer]]">
>>
>> </$list>
>>
> ...there can be several "question" tiddlers with the same answer...
>>
> I would like to obtain this list but without duplicates.
>>
>
> Use the "each:value[]" filter, like this: 
> <$list filter="[tag[question]get[answer]each:value[]]">
>
> </$list>
>
> see https://tiddlywiki.com/#each%20Operator for more info.
>
> enjoy,
> -e
>

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