Module `CCImmutArray`

Immutable Arrays

Purely functional use of arrays. Update is costly, but reads are very fast. Sadly, it is not possible to make this type covariant without using black magic.

since: 0.17

type 'a t

Array of values of type 'a. The underlying type really is an array, but it will never be modified.

It should be covariant but OCaml will not accept it.

val empty : 'a t
val length : _ t -> int
val singleton : 'a -> 'a t
val doubleton : 'a -> 'a -> 'a t
val make : int -> 'a -> 'a t: make n x makes an array of n times x.

val init : int -> (int -> 'a) -> 'a t

init n f makes the array [| f 0; f 1; ... ; f (n-1) |].

raises Invalid_argument: if n < 0.

val get : 'a t -> int -> 'a: Access the element.

val set : 'a t -> int -> 'a -> 'a t: Copy the array and modify its copy.

val sub : 'a t -> int -> int -> 'a t

sub a start len returns a fresh array of length len, containing the elements from start to pstart + len - 1 of array a.

Raises Invalid_argument "Array.sub" if start and len do not designate a valid subarray of a; that is, if start < 0, or len < 0, or start + len > Array.length a.

since: 1.5

val map : ('a -> 'b) -> 'a t -> 'b t
val mapi : (int -> 'a -> 'b) -> 'a t -> 'b t
val append : 'a t -> 'a t -> 'a t
val iter : ('a -> unit) -> 'a t -> unit
val iteri : (int -> 'a -> unit) -> 'a t -> unit
val foldi : ('a -> int -> 'b -> 'a) -> 'a -> 'b t -> 'a
val fold : ('a -> 'b -> 'a) -> 'a -> 'b t -> 'a
val for_all : ('a -> bool) -> 'a t -> bool
val exists : ('a -> bool) -> 'a t -> bool

Conversions

type 'a iter = ('a -> unit) -> unit
type 'a gen = unit -> 'a option

val of_list : 'a list -> 'a t
val to_list : 'a t -> 'a list
val of_array_unsafe : 'a array -> 'a t: Take ownership of the given array. Careful, the array must NOT be modified afterwards!

val to_iter : 'a t -> 'a iter
val of_iter : 'a iter -> 'a t
val of_gen : 'a gen -> 'a t
val to_gen : 'a t -> 'a gen

IO

type 'a printer = Stdlib.Format.formatter -> 'a -> unit

val pp : ?⁠pp_start:unit printer -> ?⁠pp_stop:unit printer -> ?⁠pp_sep:unit printer -> 'a printer -> 'a t printer: pp ~pp_start ~pp_stop ~pp_sep pp_item ppf a formats the array a on ppf. Each element is formatted with pp_item, pp_start is called at the beginning, pp_stop is called at the end, pp_sep is called between each elements. By defaults pp_start and pp_stop does nothing and pp_sep defaults to (fun out -> Format.fprintf out ",@ ").