package batteries

  1. Overview
  2. Docs
package batteries
Legend:
Library
Module
Module type
Parameter
Class
Class type
Capabilities for arrays.

This modules provides the same set of features as Array, but with the added twist that arrays can be made read-only or write-only. Read-only arrays may then be safely shared and distributed.

There is no loss of performance involved.

Only the capability-specific functions are documented here. See the complete Array module for the documentation of other functions.

type ('a, 'b) t constraint 'b = [< `Read | `Write ]

The type of arrays with capabilities. An ('a, [`Read | `Write]) array behaves as a regular 'a array, while a ('a, [`Read]) array only has read-only capabilities and a ('a, [`Write]) array only has write-only capabilities.

Base operations
val length : ('a, [> ]) t -> int
val get : ('a, [> `Read ]) t -> int -> 'a
val set : ('a, [> `Write ]) t -> int -> 'a -> unit
Constructors
val make : int -> 'a -> ('a, _) t
val create : int -> 'a -> ('a, _) t
val make_float : int -> (float, _) t

Array.make_float n returns a fresh float array of length n, with uninitialized data.

  • since 2.3.0 and OCaml 4.2.0
val of_array : 'a array -> ('a, _) t

Adopt a regular array as a capability array, allowing to decrease capabilities if necessary.

This operation involves no copying. In other words, in let cap = of_array a in ..., any modification in a will also have effect on cap and reciprocally.

val to_array : ('a, [ `Read | `Write ]) t -> 'a array

Return a capability array as an array.

This operation requires both read and write permissions on the capability array and involves no copying. In other words, in let a = of_array cap in ..., any modification in a will also have effect on cap and reciprocally.

val read_only : ('a, [> `Read ]) t -> ('a, [ `Read ]) t

Drop to read-only permissions.

This operation involves no copying.

val write_only : ('a, [> `Write ]) t -> ('a, [ `Write ]) t

Drop to write-only permissions.

This operation involves no copying.

val init : int -> (int -> 'a) -> ('a, _) t
val make_matrix : int -> int -> 'a -> (('a, _) t, _) t
val create_matrix : int -> int -> 'a -> (('a, _) t, _) t
Iterators
val iter : ('a -> unit) -> ('a, [> `Read ]) t -> unit
val map : ('a -> 'b) -> ('a, [> `Read ]) t -> ('b, _) t
val iteri : (int -> 'a -> unit) -> ('a, [> `Read ]) t -> unit
val mapi : (int -> 'a -> 'b) -> ('a, [> `Read ]) t -> ('b, _) t
val modify : ('a -> 'a) -> ('a, [ `Read | `Write ]) t -> unit
val modifyi : (int -> 'a -> 'a) -> ('a, [ `Read | `Write ]) t -> unit
val fold_left : ('a -> 'b -> 'a) -> 'a -> ('b, [> `Read ]) t -> 'a
val fold : ('a -> 'b -> 'a) -> 'a -> ('b, [> `Read ]) t -> 'a
val fold_right : ('b -> 'a -> 'a) -> ('b, [> `Read ]) t -> 'a -> 'a
val fold_while : ('acc -> 'a -> bool) -> ('acc -> 'a -> 'acc) -> 'acc -> ('a, [> `Read ]) t -> 'acc * int
Operations on two arrays
val iter2 : ('a -> 'b -> unit) -> ('a, [> `Read ]) t -> ('b, [> `Read ]) t -> unit
val iter2i : (int -> 'a -> 'b -> unit) -> ('a, [> `Read ]) t -> ('b, [> `Read ]) t -> unit
Predicates
val for_all : ('a -> bool) -> ('a, [> `Read ]) t -> bool
val exists : ('a -> bool) -> ('a, [> `Read ]) t -> bool
val find : ('a -> bool) -> ('a, [> `Read ]) t -> 'a
val mem : 'a -> ('a, [> `Read ]) t -> bool
val memq : 'a -> ('a, [> `Read ]) t -> bool
val findi : ('a -> bool) -> ('a, [> `Read ]) t -> int
val filter : ('a -> bool) -> ('a, [> `Read ]) t -> ('a, _) t
val filter_map : ('a -> 'b option) -> ('a, [> `Read ]) t -> ('b, _) t
val count_matching : ('a -> bool) -> ('a, [> `Read ]) t -> int
val find_all : ('a -> bool) -> ('a, [> `Read ]) t -> ('a, _) t
val partition : ('a -> bool) -> ('a, [> `Read ]) t -> ('a, _) t * ('a, _) t
Array transformations
val rev : ('a, [> `Read ]) t -> ('a, _) t
val rev_in_place : ('a, [ `Read | `Write ]) t -> unit
val append : ('a, [> `Read ]) t -> ('a, [> `Read ]) t -> ('a, _) t
val concat : ('a, [> `Read ]) t list -> ('a, _) t
val sub : ('a, [> `Read ]) t -> int -> int -> ('a, _) t
val copy : ('a, [> `Read ]) t -> 'a array
val fill : ('a, [> `Write ]) t -> int -> int -> 'a -> unit
val blit : ('a, [> `Read ]) t -> int -> ('a, [> `Write ]) t -> int -> int -> unit
Conversions
val enum : ('a, [> `Read ]) t -> 'a BatEnum.t
val of_enum : 'a BatEnum.t -> ('a, _) t
val backwards : ('a, [> `Read ]) t -> 'a BatEnum.t
val of_backwards : 'a BatEnum.t -> ('a, _) t
val to_list : ('a, [> `Read ]) t -> 'a list
val split : ('a * 'b, [> `Read ]) t -> ('a, _) t * ('b, _) t
val pivot_split : 'a BatOrd.ord -> ('a, [> `Read ]) t -> 'a -> int * int
val of_list : 'a list -> ('a, _) t
Utilities
val sort : ('a -> 'a -> int) -> ('a, [> `Read | `Write ]) t -> unit
val stable_sort : ('a -> 'a -> int) -> ('a, [ `Read | `Write ]) t -> unit
val fast_sort : ('a -> 'a -> int) -> ('a, [ `Read | `Write ]) t -> unit
Boilerplate code
val print : ?first:string -> ?last:string -> ?sep:string -> ('a BatIO.output -> 'b -> unit) -> 'a BatIO.output -> ('b, [> `Read ]) t -> unit
val compare : 'a BatOrd.comp -> ('a, [> `Read ]) t BatOrd.comp
val ord : 'a BatOrd.ord -> ('a, [> `Read ]) t BatOrd.ord
val equal : 'a BatOrd.eq -> ('a, [> `Read ]) t BatOrd.eq
Override modules
module Exceptionless : sig ... end

Operations on BatArray.Cap without exceptions.

module Labels : sig ... end

Operations on BatArray.Cap with labels.

OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct