include sig ... endval hash_fold_t : (Hash.state ‑> 'f ‑> Hash.state) ‑> (Hash.state ‑> 's ‑> Hash.state) ‑> Hash.state ‑> ('f, 's) t ‑> Hash.stateinclude Invariant.S2 with type (a, b) t := (a, b) tval invariant : 'a Base__.Invariant_intf.inv ‑> 'b Base__.Invariant_intf.inv ‑> ('a, 'b) t Base__.Invariant_intf.invval value : ('a, 'a) t ‑> 'aval iter : ('a, 'b) t ‑> first:('a ‑> unit) ‑> second:('b ‑> unit) ‑> unitval value_map : ('a, 'b) t ‑> first:('a ‑> 'c) ‑> second:('b ‑> 'c) ‑> 'cmodule type Focused = Base__.Either_intf.Focusedval is_first : (_, _) t ‑> boolval is_second : (_, _) t ‑> boolval second : 's ‑> (_, 's) tmodule Export : sig ... end