Reason · Reason lets you write simple, fast and quality type safe code while leveraging both the JavaScript & OCaml ecosystems.

Reason
sig
 type 'a t = 'a array
 external length : 'a array -> int = "%array_length"
 external get : 'a array -> int -> 'a = "%array_safe_get"
 external set : 'a array -> int -> 'a -> unit = "%array_safe_set"
 external make : int -> 'a -> 'a array = "caml_make_vect"
 external create_float : int -> float array = "caml_make_float_vect"
 val init : int -> (int -> 'a) -> 'a array
 val make_matrix : int -> int -> 'a -> 'a array array
 val append : 'a array -> 'a array -> 'a array
 val concat : 'a array list -> 'a array
 val sub : 'a array -> int -> int -> 'a array
 val copy : 'a array -> 'a array
 val fill : 'a array -> int -> int -> 'a -> unit
 val blit : 'a array -> int -> 'a array -> int -> int -> unit
 val to_list : 'a array -> 'a list
 val of_list : 'a list -> 'a array
 val iter : ('a -> unit) -> 'a array -> unit
 val iteri : (int -> 'a -> unit) -> 'a array -> unit
 val map : ('a -> 'b) -> 'a array -> 'b array
 val mapi : (int -> 'a -> 'b) -> 'a array -> 'b array
 val fold_left : ('a -> 'b -> 'a) -> 'a -> 'b array -> 'a
 val fold_left_map :
  ('a -> 'b -> 'a * 'c) -> 'a -> 'b array -> 'a * 'c array
 val fold_right : ('b -> 'a -> 'a) -> 'b array -> 'a -> 'a
 val iter2 : ('a -> 'b -> unit) -> 'a array -> 'b array -> unit
 val map2 : ('a -> 'b -> 'c) -> 'a array -> 'b array -> 'c array
 val for_all : ('a -> bool) -> 'a array -> bool
 val exists : ('a -> bool) -> 'a array -> bool
 val for_all2 : ('a -> 'b -> bool) -> 'a array -> 'b array -> bool
 val exists2 : ('a -> 'b -> bool) -> 'a array -> 'b array -> bool
 val mem : 'a -> 'a array -> bool
 val memq : 'a -> 'a array -> bool
 val find_opt : ('a -> bool) -> 'a array -> 'a option
 val find_map : ('a -> 'b option) -> 'a array -> 'b option
 val split : ('a * 'b) array -> 'a array * 'b array
 val combine : 'a array -> 'b array -> ('a * 'b) array
 val sort : ('a -> 'a -> int) -> 'a array -> unit
 val stable_sort : ('a -> 'a -> int) -> 'a array -> unit
 val fast_sort : ('a -> 'a -> int) -> 'a array -> unit
 val to_seq : 'a array -> 'a Stdlib.Seq.t
 val to_seqi : 'a array -> (int * 'a) Stdlib.Seq.t
 val of_seq : 'a Stdlib.Seq.t -> 'a array
 external unsafe_get : 'a array -> int -> 'a = "%array_unsafe_get"
 external unsafe_set : 'a array -> int -> 'a -> unit = "%array_unsafe_set"
 module Floatarray :
  sig
   external create : int -> floatarray = "caml_floatarray_create"
   external length : floatarray -> int = "%floatarray_length"
   external get : floatarray -> int -> float = "%floatarray_safe_get"
   external set : floatarray -> int -> float -> unit
    = "%floatarray_safe_set"
   external unsafe_get : floatarray -> int -> float
    = "%floatarray_unsafe_get"
   external unsafe_set : floatarray -> int -> float -> unit
    = "%floatarray_unsafe_set"
  end
end

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