package containers

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package containers
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Growable, mutable vector

type ro = [
  1. | `RO
]
type rw = [
  1. | `RW
]

Mutability is rw (read-write) or ro (read-only).

type ('a, 'mut) t

The type of a vector of elements of type 'a, with a mutability flat 'mut.

type 'a vector = ('a, rw) t

Type synonym: a 'a vector is mutable.

type 'a ro_vector = ('a, ro) t

Alias for immutable vectors.

  • since 0.15
type 'a iter = ('a -> unit) -> unit

Fast internal iterator.

  • since 2.8
type 'a gen = unit -> 'a option
type 'a equal = 'a -> 'a -> bool
type 'a ord = 'a -> 'a -> int
type 'a printer = Stdlib.Format.formatter -> 'a -> unit
val freeze : ('a, _) t -> ('a, ro) t

Make an immutable vector (no copy! Don't use the old version).

val freeze_copy : ('a, _) t -> ('a, ro) t

Copy the vector into an immutable version.

val create : unit -> ('a, rw) t

Create a new, empty vector.

val create_with : ?capacity:int -> 'a -> ('a, rw) t

Create a new vector, the value is used to enforce the type the new vector.

  • parameter capacity

    the size of the underlying array.

val return : 'a -> ('a, 'mut) t

Singleton vector.

  • since 0.14
val make : int -> 'a -> ('a, 'mut) t

make n x makes a vector of size n, filled with x.

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

Init the vector with the given function and size.

val clear : ('a, rw) t -> unit

Clear the content of the vector. This ensures that length v = 0 but the underlying array is kept, and possibly references to former elements, which are therefore not garbage collectible.

val clear_and_reset : ('a, rw) t -> unit

Clear the content of the vector, and deallocate the underlying array, removing references to all the elements. The elements can be collected.

  • since 2.8
val ensure_with : init:'a -> ('a, rw) t -> int -> unit

Hint to the vector that it should have at least the given capacity. This does not affect length v.

  • parameter init

    if capacity v = 0, used to enforce the type of the vector (see create_with).

  • raises Invalid_arg

    if the size is not suitable (negative, or too big for OCaml arrays)

  • since 0.14
val ensure : ('a, rw) t -> int -> unit

Hint to the vector that it should have at least the given capacity. Just a hint, will not be enforced if the vector is empty and init is not provided.

  • raises Invalid_arg

    if the size is not suitable (negative, or too big for OCaml arrays)

val is_empty : ('a, _) t -> bool

Is the vector empty?

val push : ('a, rw) t -> 'a -> unit

Add an element at the end of the vector.

val resize_with : ('a, rw) t -> (int -> 'a) -> int -> unit

resize_with vec f size resizes vector vec up to size, fills vector with calls to f on indexes [vec.size-1.. size - 1]. The contents and size of vec are untouched if size is inferior or equal to length vec.

  • raises Invalid_argument

    if the size is too big

  • since 3.7
val resize_with_init : ('a, rw) t -> init:'a -> int -> unit

resize_with_init vec init size resizes vector vec up to size, fills vector with calls to init on indexes [length vec -1.. size - 1]. The contents and size of vec are untouched if size is inferior or equal to length vec.

  • raises Invalid_argument

    if the size is too big

  • since 3.7
val append : ('a, rw) t -> ('a, _) t -> unit

append a b adds all elements of b to a.

val append_array : ('a, rw) t -> 'a array -> unit

Like append, with an array.

val append_iter : ('a, rw) t -> 'a iter -> unit

Append content of iterator.

  • since 2.8
val append_seq : ('a, rw) t -> 'a Stdlib.Seq.t -> unit

Append content of iterator. Renamed from append_std_seq since 3.0.

  • since 3.0
val append_list : ('a, rw) t -> 'a list -> unit

Append content of list.

  • since 0.14
val append_gen : ('a, rw) t -> 'a gen -> unit

Append content of generator.

  • since 0.20
val equal : 'a equal -> ('a, _) t equal
val compare : 'a ord -> ('a, _) t ord

Total ordering on vectors. Lexicographic comparison.

exception Empty

Raised on empty stack.

val pop : ('a, rw) t -> 'a option

Remove last element, or None.

val pop_exn : ('a, rw) t -> 'a

Remove last element, or raise an exception if empty.

  • raises Empty

    on an empty vector.

val top : ('a, _) t -> 'a option

Top element, if present.

  • since 0.6
val top_exn : ('a, _) t -> 'a

Top element, if present.

  • raises Empty

    on an empty vector.

  • since 0.6
val copy : ('a, _) t -> ('a, 'mut) t

Shallow copy (may give an immutable or mutable vector).

val truncate : ('a, rw) t -> int -> unit

Truncate to the given size (remove elements above this size). Does nothing if the parameter is bigger than the current size. truncate was called shrink.

  • since 3.0
val shrink_to_fit : ('a, _) t -> unit

Shrink internal array to fit the size of the vector

  • since 2.8
val member : eq:('a -> 'a -> bool) -> 'a -> ('a, _) t -> bool

Is the element a member of the vector?

val sort : ('a -> 'a -> int) -> ('a, _) t -> ('a, 'mut) t

Sort the vector, returning a copy of it that is sorted w.r.t the given ordering. The vector itself is unchanged. The underlying array of the new vector can be smaller than the original one.

val sort' : ('a -> 'a -> int) -> ('a, rw) t -> unit

Sort the vector in place (modifying it). This function change the size of the underlying array.

val uniq_sort : ('a -> 'a -> int) -> ('a, rw) t -> unit

Sort the array and remove duplicates, in place (e.g. modifying the vector itself).

val iter : ('a -> unit) -> ('a, _) t -> unit

Iterate on the vector's content.

val iteri : (int -> 'a -> unit) -> ('a, _) t -> unit

Iterate on the vector, with indexes.

val map : ('a -> 'b) -> ('a, _) t -> ('b, 'mut) t

Map elements of the vector, yielding a new vector.

val mapi : (int -> 'a -> 'b) -> ('a, _) t -> ('b, 'mut) t

map f v is just like map, but it also passes in the index of each element as the first argument to the function f.

  • since 2.8
val map_in_place : ('a -> 'a) -> ('a, _) t -> unit

Map elements of the vector in place

  • since 2.3
val filter : ('a -> bool) -> ('a, _) t -> ('a, 'mut) t

Filter elements from the vector. filter p v leaves v unchanged but returns a new vector that only contains elements of v satisfying p.

val filter_in_place : ('a -> bool) -> ('a, rw) t -> unit

Filter elements from the vector in place.

  • since 3.0
val fold : ('b -> 'a -> 'b) -> 'b -> ('a, _) t -> 'b

Fold on elements of the vector

val foldi : (int -> 'b -> 'a -> 'b) -> 'b -> ('a, _) t -> 'b

foldi f init v is just like fold, but it also passes in the index of each element as the first argument to the function f.

  • since 3.13.1
val exists : ('a -> bool) -> ('a, _) t -> bool

Existential test (is there an element that satisfies the predicate?).

val for_all : ('a -> bool) -> ('a, _) t -> bool

Universal test (do all the elements satisfy the predicate?).

val find : ('a -> bool) -> ('a, _) t -> 'a option

Find an element that satisfies the predicate.

val find_exn : ('a -> bool) -> ('a, _) t -> 'a

Find an element that satisfies the predicate, or

  • raises Not_found

    if no element does.

val find_map : ('a -> 'b option) -> ('a, _) t -> 'b option

find_map f v returns the first Some y = f x for x in v, or None if f x = None for each x in v.

  • since 0.14
val filter_map : ('a -> 'b option) -> ('a, _) t -> ('b, 'mut) t

Map elements with a function, possibly filtering some of them out.

val filter_map_in_place : ('a -> 'a option) -> ('a, _) t -> unit

Filter-map elements of the vector in place

  • since 2.3
val flat_map : ('a -> ('b, _) t) -> ('a, _) t -> ('b, 'mut) t

Map each element to a sub-vector.

val flat_map_seq : ('a -> 'b Stdlib.Seq.t) -> ('a, _) t -> ('b, 'mut) t

Like flat_map, but using Seq for intermediate collections. Renamed from flat_map_std_seq since 3.0.

  • since 3.0
val flat_map_list : ('a -> 'b list) -> ('a, _) t -> ('b, 'mut) t

Like flat_map, but using list for intermediate collections.

  • since 0.14
val monoid_product : ('a -> 'b -> 'c) -> ('a, _) t -> ('b, _) t -> ('c, _) t

All combinaisons of tuples from the two vectors are passed to the function.

  • since 2.8
val (>>=) : ('a, _) t -> ('a -> ('b, _) t) -> ('b, 'mut) t

Infix version of flat_map.

val (>|=) : ('a, _) t -> ('a -> 'b) -> ('b, 'mut) t

Infix version of map.

val get : ('a, _) t -> int -> 'a

Access element by its index, or

  • raises Invalid_argument

    if bad index.

val set : ('a, rw) t -> int -> 'a -> unit

Modify element at given index, or

  • raises Invalid_argument

    if the index is invalid (i.e. not in [0.. length v-1]).

val remove_and_shift : ('a, rw) t -> int -> unit

remove_and_shift v i remove the i-th element from v. Move elements that are after the i-th in v, in linear time. Preserve the order of the elements in v. See remove_unordered for constant time removal function that doesn't preserve the order of elements.

  • since 3.0
val remove_unordered : ('a, rw) t -> int -> unit

remove_unordered v i remove the i-th element from v. Does NOT preserve the order of the elements in v (might swap with the last element). See remove_and_shift if you want to keep the ordering.

val insert : ('a, rw) t -> int -> 'a -> unit

insert v i x insert the given element at index i. Elements at location i and later are first shifted over in linear time before inserting x. Preserve the order of elements in v.

  • since 3.7
val rev : ('a, _) t -> ('a, 'mut) t

Reverse the vector.

val rev_in_place : ('a, rw) t -> unit

Reverse the vector in place.

  • since 0.14
val rev_iter : ('a -> unit) -> ('a, _) t -> unit

rev_iter f a is the same as iter f (rev a), only more efficient.

  • since 0.14
val size : ('a, _) t -> int

Number of elements in the vector.

val length : (_, _) t -> int

Synonym for size.

val capacity : (_, _) t -> int

Number of elements the vector can contain without being resized.

val unsafe_get_array : ('a, rw) t -> 'a array

Access the underlying shared array (do not modify!). unsafe_get_array v is longer than size v, but elements at higher index than size v are undefined (do not access!).

val (--) : int -> int -> (int, 'mut) t

Range of integers, either ascending or descending (both included, therefore the result is never empty). Example: 1 -- 10 returns the vector [1;2;3;4;5;6;7;8;9;10].

val (--^) : int -> int -> (int, 'mut) t

Range of integers, either ascending or descending, but excluding right. Example: 1 --^ 10 returns the vector [1;2;3;4;5;6;7;8;9].

  • since 0.17
val of_array : 'a array -> ('a, 'mut) t

of_array a returns a vector corresponding to the array a. Operates in O(n) time.

val of_list : 'a list -> ('a, 'mut) t
val to_array : ('a, _) t -> 'a array

to_array v returns an array corresponding to the vector v.

val to_list : ('a, _) t -> 'a list

Return a list with the elements contained in the vector.

val of_iter : ?init:('a, rw) t -> 'a iter -> ('a, rw) t

Convert an Iterator to a vector.

  • since 2.8.1
val of_seq : ?init:('a, rw) t -> 'a Stdlib.Seq.t -> ('a, rw) t

Convert an Iterator to a vector. Renamed from of_std_seq since 3.0.

  • since 3.0
val to_iter : ('a, _) t -> 'a iter

Return a iter with the elements contained in the vector.

  • since 2.8
val to_iter_rev : ('a, _) t -> 'a iter

to_iter_rev v returns the sequence of elements of v in reverse order, that is, the last elements of v are iterated on first.

  • since 2.8
val to_seq : ('a, _) t -> 'a Stdlib.Seq.t

Return an iterator with the elements contained in the vector. Renamed from to_std_seq since 3.0.

  • since 3.0
val to_seq_rev : ('a, _) t -> 'a Stdlib.Seq.t

to_seq v returns the sequence of elements of v in reverse order, that is, the last elements of v are iterated on first. Renamed from to_std_seq since 3.0.

  • since 3.0
val slice : ('a, rw) t -> 'a array * int * int

Vector as an array slice. By doing it we expose the internal array, so be careful!.

val slice_iter : ('a, _) t -> int -> int -> 'a iter

slice_iter v start len is the sequence of elements from v.(start) to v.(start+len-1).

  • since 3.0
val of_gen : ?init:('a, rw) t -> 'a gen -> ('a, rw) t
val to_gen : ('a, _) t -> 'a gen
val to_string : ?start:string -> ?stop:string -> ?sep:string -> ('a -> string) -> ('a, _) t -> string

Print the vector in a string

  • since 2.7
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 v formats the vector v 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 ",@ ").

val let+ : ('a, 'e) t -> ('a -> 'b) -> ('b, 'e) t
  • since 2.8
val and+ : ('a, 'e) t -> ('b, 'e) t -> ('a * 'b, 'e) t
  • since 2.8
val let* : ('a, 'e) t -> ('a -> ('b, 'e) t) -> ('b, 'e) t
  • since 2.8
val and* : ('a, 'e) t -> ('b, 'e) t -> ('a * 'b, 'e) t
  • since 2.8
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