Hello, While working on Raven with heterogeneous columns of a dataframe, I encountered let cumsum t name = match get_column t name with | Some (Col.P (dtype, tensor)) -> ( match dtype with | Nx.Float32 -> let arr : float array = Nx.to_array tensor in let result = Array.copy arr in for i = 1 to Array.length result - 1 do result.(i) <- result.(i - 1) +. result.(i) done; Col.P (dtype, Nx.create dty...| OCaml