val unit_e : (t, 'a) Stdlib.resultval unit_es : (t, 'a) Stdlib.result Lwt.tval equal : t -> t -> boolval compare : t -> t -> intval to_string : t -> stringval catch : ?catch_only:(exn -> bool) -> (unit -> unit) -> unitval catch_f :
?catch_only:(exn -> bool) ->
(unit -> unit) ->
(exn -> unit) ->
unitval catch_s : ?catch_only:(exn -> bool) -> (unit -> unit Lwt.t) -> unit Lwt.t