resource.ml1 2 3 4 5 6 7 8 9type 'a t = ([> `Unix_fd] as 'a) Eio.Resource.t type ('t, _, _) Eio.Resource.pi += T : ('t, 't -> Fd.t, [> `Unix_fd]) Eio.Resource.pi let fd (Eio.Resource.T (t, ops)) = Eio.Resource.get ops T t let fd_opt (Eio.Resource.T (t, ops)) = match Eio.Resource.get_opt ops T with | Some f -> Some (f t) | None -> None