Consider this code: with {:a, first_result} <- {:a, List.first(["apple"])}, {:b, b} <- {:b, %{} |> to_string} do {:ok, "happy path"} else {:a, _} -> {:error, "this will never be a problem"} {:b, error} -> {:error, "Why can I not print #{first_result} here?"} end I have learned by trial…

This works: with {:a, first_result} <- {:a, List.first(["apple"])}, {:b, first_result, :something} <- {:b, first_result, :other_thing} do {:ok, "happy path"} else {:a, _} -> {:error, "this will never be a problem"} {:b, first_result, _} -> {:error, "Now I can prin…