keystore? exported

keystore.rkt

@@ -26,6 +26,7 @@
          ks-end-transaction
          ks-abort-transaction
          ks-with-lock
+         keystore?
          )
 
 (define (any? a) #t)

scrbl/keystore.scrbl

@@ -36,6 +36,16 @@ The @tt{keystore?} predicate is altered to also check if the
 database connection is (still) valid.
 }
 
+@defproc[(keystore? [ks any/c]) boolean?]{
+
+Returns #t, if ks is a valid keystore.
+Returns #f, otherwise.
+
+Note. When a previously opened keystore (which is valid), is closed with @tt{ks-close},
+keystore? will return #f, because the keystore is not valid anymore. 
+}
+                                         
+
 @section{Opening & Closing}
 
 @defproc[(ks-open [file (or/c path? string? symbol?)]) keystore?]{