protox generates nested lists (was: Strange behavior when encoding complex nested struct) about protox

[seanmor5]

Ahh that makes sense - sorry for the easy question! Thank you so much, this is exactly what I needed! I am glad you enjoyed the book :)

[ahamez]

Hello! I'm glad to know that you found the library easy to use :-)

The output you got is expected: protox outputs IO data, a data structure to optimize the generation of large volumes of data.
All output functions should be able to take this kind of data as a parameter. In your case, if you want to write encoded to a file:

iex> data = File.read!("resnet18-v1-7.onnx")
iex> decoded = Onnx.ModelProto.decode!(data)
iex> encoded = Onnx.ModelProto.encode!(decoded)
iex> {:ok, file} = File.open("msg.bin", [:write])
iex> IO.binwrite(file, encoded)

If you want a good old binary, use :binary.list_to_bin():

iex> encoded = decoded |> Onnx.ModelProto.encode!() |> :binary.list_to_bin()
<<8, 3, 58, 244, 218, 169, 22, 10, 172, 1, 10, 4, 100, 97, 116, 97, 10, 22, 114,
  101, 115, 110, 101, 116, 118, 49, 53, 95, 99, 111, 110, 118, 48, 95, 119, 101,
  105, 103, 104, 116, 18, 19, 114, 101, 115, 110, 101, 116, 118, 49, ...>>
iex>  data == encoded
true

Does this answer your question?

BTW, I really enjoyed your book on genetic algorithms, and congrats for your work on Nx ;-)