Since you refuse to be more specific, it sounds like you're just not willing to learn the language and the way problems are solved with it.
Expecting mutable C-type arrays in elixir/erlang is like expecting classes and lambdas in an assembly language. It's just not a good fit for what the language was designed to do.
not the OP, but I've had a side project in Elixir and often I wanted to browse/play with some of the last saved models in repl. When I get the collection using `ecto`'s `Repo.all..` I can't just `bets[4]` or `bets[-2]`, I have to do weird gymnastics like `hd(tl(bets |> Enum.reverse))`
