dbm

6.3.90.900

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package: dbm

This package provides an interface to UNIX dbm databases for Racket.

procedure
(dbm? v) → boolean?
v : any/c

Returns #t if v is a dbm structure, #f otherwise.

A dbm structure is a dictionary.

procedure
(dbm-open pth) → dbm?
pth : path-string?

Opens the dbm file at pth, returning a handle.

procedure
(dbm-close! dbm) → void
dbm : dbm?

Closes the database handled by dbm.

procedure
(dbm-remove! dbm key) → void
dbm : dbm?
key : string?

Removes key from dbm.

procedure
(dbm-set! dbm key val [#:replace? replace?]) → void
  dbm : dbm?
  key : string?
  val : string?
  replace? : boolean? = #f

Sets key to val in dbm. Results in an error if key is present in dbm and replace? is not true.

procedure
(dbm-ref dbm key fail) → string?
  dbm : dbm?
  key : string?
  fail : (or/c string? (-> string?))

Returns key’s value in dbm, calling or returning fail if key is not present, like dict-ref.

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