package dokeysto

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type t

val create : filename -> t

create fn create in read-write mode the persistent hashtbl whose data are stored in file fn and whose index is stored in fn ^ ".idx".

val open_existing : filename -> t

open_existing fn open in read-write mode the persistent hashtbl whose data are stored in file fn and whose index is stored in fn ^ ".idx".

val dummy : unit -> t

dummy () create a value of type t. Do not do anything with this value.

val close : t -> unit

close db close the previously opened db.

val sync : t -> unit

sync db sync to disk the data and metadata (index) of db.

val destroy : t -> unit

destroy db rm data and metadata files of db and clear db's index hashtbl.

val mem : t -> string -> bool

mem db k check if k is bound in db.

val add : t -> string -> string -> unit

add db k v add the key-value binding (k,v) to db.

val replace : t -> string -> string -> unit

replace db k v replace the current binding for k in db by a binding from k to v. Cf. Hashtbl.replace for details.

val remove : t -> string -> unit

remove tbl k remove the current binding for k in db. Cf. Hashtbl.replace for details.

val find : t -> string -> string

find db k get the current binding of k in db or raise Not_found.

val raw_read : t -> position -> string

raw_read db pos read from the data file of db the string at position pos. WARNING: regular users should not need to call this function.

val iter : (string -> string -> unit) -> t -> unit

iter f db apply f to all key-value pairs in db. Cf. Hashtbl.iter for details.

val fold : (string -> string -> 'a -> 'a) -> t -> 'a -> 'a

fold f db init fold f over all key-value pairs in db. Cf. Hashtbl.fold for details.