Parameter Make.1-Key

type t
include Ppx_sexp_conv_lib.Sexpable.S with type t := t
val t_of_sexp : Sexplib0.Sexp.t -> t
val sexp_of_t : t -> Sexplib0.Sexp.t
include Core_kernel.Hashtbl_intf.Key_plain with type t := t
val compare : t -> t -> int
val sexp_of_t : t -> Base.Sexp.t
val hash : t -> int

Two ts that compare equal must have equal hashes for the hashtable to behave properly.