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type 'a t = { mutable array : 'a array; mutable length : int }
let create () = { array = [||]; length = 0 }
let length t = t.length
let get t i =
if i < 0 || i >= t.length then invalid_arg "Dynarray.get: index out of bounds"
else t.array.(i)
let set t i v =
if i < 0 || i >= t.length then invalid_arg "Dynarray.set: index out of bounds"
else t.array.(i) <- v
let ensure_capacity t n =
if n > Array.length t.array then (
let new_capacity = max n (max 1 (2 * Array.length t.array)) in
let new_array = Array.make new_capacity (Obj.magic 0) in
Array.blit t.array 0 new_array 0 t.length;
t.array <- new_array)
let add_last t v =
ensure_capacity t (t.length + 1);
t.array.(t.length) <- v;
t.length <- t.length + 1
let clear t = t.length <- 0
let is_empty t = t.length = 0
let to_seq t =
let rec aux i () =
if i >= t.length then Seq.Nil else Seq.Cons (t.array.(i), aux (i + 1))
in
aux 0
let to_array t =
if t.length = 0 then [||]
else
let result = Array.make t.length t.array.(0) in
Array.blit t.array 0 result 0 t.length;
result
let of_seq seq =
let t = create () in
Seq.iter (fun x -> add_last t x) seq;
t