Tuple_pool.PointerA pointer to a tuple in a pool. 'slots will look like ('a1, ..., 'an)
Slots.tn, and the tuples have type 'a1 * ... * 'an.
val sexp_of_t : ('slots -> Ppx_sexp_conv_lib.Sexp.t) -> 'slots t -> Ppx_sexp_conv_lib.Sexp.tval null : unit -> _ tThe null pointer is a distinct pointer that does not correspond to a tuple in the pool. It is a function to prevent problems due to the value restriction.
val is_null : _ t -> boolmodule Id : sig ... end