type Tezos_base.TzPervasives.error += | Cannot_write_file of string| Cannot_create_dir of string| Cannot_read_file of string| Io_error of [ `Close | `Open ] Tezos_stdlib_unix.Lwt_utils_unix.io_error| Unix_error of Unix.error| Decoding_error of Tezos_base.TzPervasives.Data_encoding.Binary.read_errorval maybe_read_value :
warn:
(string ->
Tezos_base.TzPervasives.error Tezos_base.TzPervasives.trace ->
unit Lwt.t) ->
string ->
'a Tezos_base.TzPervasives.Data_encoding.t ->
'a option Lwt.tmaybe_read_value ~warn filename encoding reads the value with encoding from the file filename. It returns None if it fails to read a value and will emit a warning with the warn function in this case.
val write_value :
string ->
'a Tezos_base.TzPervasives.Data_encoding.t ->
'a ->
(unit, Tezos_base.TzPervasives.error Tezos_base.TzPervasives.trace)
Stdlib.result
Lwt.twrite_value filename encoding v write the value v to the file filename in binary form following the encoding.
module type H = sig ... endSignature for hash tables with additional information
module Make_table (H : H) : sig ... endCreate an on-disk persistent version of Hashtbl.
module Make_queue
(N : sig ... end)
(K : Tezos_crypto.Intfs.HASH)
(V : sig ... end) :
sig ... endCreate an on-disk persistent version of the Hash_queue data structure.