Derived (base.Base.Indexed_container.Derived)

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

val iteri : 
  fold:('t -> init:int -> f:(int -> 'a -> int) -> int) ->
  't ->
  f:(int -> 'a -> unit) ->
  unit

val counti : 
  foldi:('t -> init:int -> f:(int -> int -> 'a -> int) -> int) ->
  't ->
  f:(int -> 'a -> bool) ->
  int

val existsi : 
  iteri:('t -> f:(int -> 'a -> unit) -> unit) ->
  't ->
  f:(int -> 'a -> bool) ->
  bool

val for_alli : 
  iteri:('t -> f:(int -> 'a -> unit) -> unit) ->
  't ->
  f:(int -> 'a -> bool) ->
  bool

val findi : 
  iteri:('t -> f:(int -> 'a -> unit) -> unit) ->
  't ->
  f:(int -> 'a -> bool) ->
  (int * 'a) option

val find_mapi : 
  iteri:('t -> f:(int -> 'a -> unit) -> unit) ->
  't ->
  f:(int -> 'a -> 'b option) ->
  'b option