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Compilation object digests.
include module type of Digest
The comparison function for 16-character digest, with the same specification as Pervasives.compare
and the implementation shared with String.compare
. Along with the type t
, this function compare
allows the module Digest
to be passed as argument to the functors Set.Make
and Map.Make
.
val string : string -> t
Return the digest of the given string.
val bytes : bytes -> t
Return the digest of the given byte sequence.
val substring : string -> int -> int -> t
Digest.substring s ofs len
returns the digest of the substring of s
starting at index ofs
and containing len
characters.
val subbytes : bytes -> int -> int -> t
Digest.subbytes s ofs len
returns the digest of the subsequence of s
starting at index ofs
and containing len
bytes.
val channel : Pervasives.in_channel -> int -> t
If len
is nonnegative, Digest.channel ic len
reads len
characters from channel ic
and returns their digest, or raises End_of_file
if end-of-file is reached before len
characters are read. If len
is negative, Digest.channel ic len
reads all characters from ic
until end-of-file is reached and return their digest.
val file : string -> t
Return the digest of the file whose name is given.
val output : Pervasives.out_channel -> t -> unit
Write a digest on the given output channel.
val input : Pervasives.in_channel -> t
Read a digest from the given input channel.
val to_hex : t -> string
Return the printable hexadecimal representation of the given digest. Raise Invalid_argument
if the argument is not exactly 16 bytes.
val from_hex : string -> t
Convert a hexadecimal representation back into the corresponding digest. Raise Invalid_argument
if the argument is not exactly 32 hexadecimal characters.
val pp : Format.formatter -> t -> unit
pp ppf d
prints the digest d
as an hexadecimal string.
val pp_opt : Format.formatter -> t option -> unit
pp_opt ppf od
prints the optional digest od
either like pp
or, for None
as dashes.
module Set : Asetmap.Set.S with type elt = t
type set = Set.t
The type for digest sets.
type 'a map = 'a Map.t
The type for digest maps.