Pattern Match On Empty Maps

Thanks for the help. Nicd points out the thing I was missing in that patterns aren’t first class.

Anyone who comes here in the future who wants to have a function with a dynamic match this is how I ended up doing it

def get_items(filters \\ %{}) do
  filters = MapSet.new(filters)

  for item <- get_all_items(),
    MapSet.subset?(filters, MapSet.new(item)),
    do: item
end