Range guard not working with function that takes a list

Questions & Help Questions
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2

There is no specific guard for a Range per se. But depending on your code, you can either Range.to_list(0..3//1) at your calling site, or

def list_processing_function(range) when is_struct(range, Range) do
  range
  |> Range.to_list()
  |> list_processing_function()
end

def list_processing_function(list) when is_list(list) do
  ...
end