Hey everybody! I’m delving into Rustler to enable some work on data frames in Elixir backed by polars. I’m feeling pretty confident in the mental model of using a nif resource and delegating to native functions for much of the API. One place I’m struggling to get my head around is arbitrary elixir functions on data in the nif resource. The python bindings for polars enable passing lambdas across that are then applied on the polars dataframe (see here). Does Rustler enable something or is there a preferred interop path for this sort of thing? It feels like a pretty heavy approach to serialise, apply, then deserialise back.
