Module Private.Array_view

type 'a t
val make : ?len:int -> 'a array -> pos:int -> 'a t

make arr ~pos ~len can be thought of a new array for which the 0-th element is arr.(pos) and has length len if specified. If len is omitted, Array.length arr - pos is taken as the length. Importantly, the "new array" does not copy but simply references arr. Hence, creating views is constant time. However, keep in mind that since a view references an array, the array will be alive in memory as long as the view is alive.

  • raises Invalid_argument

    if pos + len > Array.length arr or pos < 0 || pos >= Array.length arr

val get : 'a t -> int -> 'a
val set : 'a t -> int -> 'a -> unit
val is_empty : 'a t -> bool
val length : 'a t -> int
val common_suffix_len : 'a t -> 'a t -> int
val fold_left : 'a t -> init:'acc -> f:('acc -> 'a -> 'acc) -> 'acc
val iteri : 'a t -> f:(int -> 'a -> unit) -> unit
val sub : 'a t -> pos:int -> len:int -> 'a t
val blit : 'a t -> 'a array -> pos:int -> unit
val copy : 'a t -> 'a array
val backing_array_pos : _ t -> int -> int