RosettaCodeData/Task/Remove-duplicate-elements/Icon/remove-duplicate-elements.icon

procedure main(args)
    every write(!noDups(args))
end

procedure noDups(L)
    every put(newL := [], notDup(set(),!L))
    return newL
end

procedure notDup(cache, a)
    if not member(cache, a) then {
         insert(cache, a)
         return a
         }
end