T (ocamlformat-lib.Ocamlformat_stdlib.Indexed

type 'a t

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

val iter : [ `Custom of 'a t -> f:('a -> unit) -> unit | `Define_using_fold ]

val length : [ `Custom of 'a t -> int | `Define_using_fold ]

val iteri : 
  [ `Custom of 'a t -> f:(int -> 'a -> unit) -> unit | `Define_using_fold ]

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