type t = Unix.file_descr
val sexp_of_t : t -> Ppx_sexp_conv_lib.Sexp.t
include Base.Equal.S with type t := t
val equal : t Base.Equal.equal
include Core_kernel.Hashable.S_plain with type t := t
include Core_kernel.Hashable.Common with type t := t
val compare : t -> t -> Base.Int.t
val hash_fold_t : Base.Hash.state -> t -> Base.Hash.state
val hash : t -> Base.Hash.hash_value
val hashable : t Core_kernel.Hashtbl.Hashable.t
module Table : Core_kernel.Hashtbl.S_plain with type key = t
module Hash_set : Core_kernel.Hash_set.S_plain with type elt = t
module Hash_queue : Core_kernel.Hash_queue.S with type key = t
val of_int : int -> t
val to_int : t -> int