Create unique integer with ex_machina?

Questions & Help Questions
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3

I came up with this function:

  def sequence_int(sequence_name, start \\ 0) do
    Agent.get_and_update(ExMachina.Sequence, fn sequences ->
      current_value = Map.get(sequences, sequence_name, start)
      new_sequences = Map.put(sequences, sequence_name, current_value + 1)
      {current_value, new_sequences}
    end)
  end

so I can do

def thing_factory
%{
   foreign_id: sequence_int(:foreign_id, 100)
}
end

I don’t know if this would be a useful feature for others