[Seaside] how to keep only one instance of each element in a list?

[Michael Delache]

Hi,

   I'm making an html select as follows

html paragraph:

[

        html span class: 'boxAlign'; with: [

        html html: 'SÉrie: *'.

html select

list:(bds collect:[:each | each serie]);

callback: [ :value | aBD serie: value];

selected: aBD serie.

].

].


 My problem is: in "list" i have a lot of duplicated elements.
I would like to know how to keep only one instance of each element but keep
it in a list because the html select take a list (at least I think we cant
give it a set)

Thanks,

  Michaël D.
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