T (ocamlformat-lib.Ocamlformat_stdlib.Indexed

module Elt : sig ... end

type t

val fold : t -> init:'acc -> f:('acc -> Elt.t -> 'acc) -> 'acc

val iter : [ `Custom of t -> f:(Elt.t -> unit) -> unit | `Define_using_fold ]

val length : [ `Custom of t -> int | `Define_using_fold ]

val iteri : 
  [ `Custom of t -> f:(int -> Elt.t -> unit) -> unit | `Define_using_fold ]

val foldi : 
  [ `Custom of t -> init:'a -> f:(int -> 'a -> Elt.t -> 'a) -> 'a
  | `Define_using_fold ]