include sig ... end
val hash_fold_t : (Base.Hash.state ‑> 'a ‑> Base.Hash.state) ‑> (Base.Hash.state ‑> 'b ‑> Base.Hash.state) ‑> Base.Hash.state ‑> ('a, 'b) t ‑> Base.Hash.state
val t_of_sexp : (Base.Sexp.t ‑> 'a) ‑> (Base.Sexp.t ‑> 'b) ‑> Base.Sexp.t ‑> ('a, 'b) t
val sexp_of_t : ('a ‑> Base.Sexp.t) ‑> ('b ‑> Base.Sexp.t) ‑> ('a, 'b) t ‑> Base.Sexp.t