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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | (** Streaming utilities (experimental) *)
(**
This module offers a streaming interface for representing long lists
of elements that cannot fit in memory.
Stream items are serialized as chunks of configurable length.
Stream format (independent from the biniou serialization format):
{v
( ONE INT64 BYTE* )* ZERO
v}
where [INT64] is the length of a chunk (unsigned big-endian 64-bit int),
i.e. the number of following [BYTE]s.
[ONE] and [ZERO] are the single-byte representations of 1 and 0 and are used
to indicate whether the end of the stream is reached.
*)
val read_stream : (string -> 'a array) -> in_channel -> 'a Stream.t
(** [read_stream of_string ic] creates an OCaml stream from
an input channel [ic]. The data come in chunks and each chunk
is converted from a string to an array by calling [of_string]. *)
val write_stream :
?chunk_len:int ->
('a array -> string) -> out_channel -> 'a Stream.t -> unit
(** [write_stream to_string oc st] writes an OCaml stream to the
output channel [oc]. It creates chunks of [chunk_len],
except for the last chunk which is usually smaller.
@param chunk_len has a default value of 1024. The limit
supported by this OCaml implementation on 32-bit
platforms is 16777215.
*)
(**/**)
val test : int list -> bool
|