Rdb: Ruby-Nachbau der MWC /rdb-Werkzeuge

man/hashkey.man

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+.TH hashkey "" "" "/rdb Command"
+.PC "Return the hash offset for key strings"
+\fBhashkey \fIrows keystring ...\fR
+.PP
+.II "indexing^hash key"
+.II "hash-key indexing"
+The command
+.B hashkey
+adds the ASCII value of each character in the
+.IR keystring s
+(except spaces or tabs), and returns the modulo of
+.IR rows .
+This is for computing the hash offset into hash-index table for
+the hash fast-access method.
+It is used by the command
+.B append
+to update the hash-index table.
+.SH Example
+Here we convert several characters.
+The command
+.DM
+	hashkey 11 ABCD
+.DE
+.PP
+returns \fB2\fR.
+(That is, ASCII values 65 plus 66 plus 67 plus 68 yields 266; which, when
+divided by 11 yields a remainder of 2).
+The command
+.DM
+	hashkey 29 abcdefg
+.DE
+.PP
+returns \fB4\fR.
+.SH "See Also"
+.B
+append
+ascii,
+chr
+.R
+.br
+COHERENT Lexicon:
+.B
+ASCII
+.R