Monks,

I am trying to understand how NDBM and tie works in Perl. There fore in order to do that I wrote a small code snippet. shown below.

#!/usr/bin/perl                                                       
+                                                                     
+                                                                     
+                             

use strict;

use Fcntl;
use NDBM_File;


my %simple_hash = { "a" => 1 , "b" => 2 };


tie(%simple_hash,"NDBM_File","samplefile.dbmx",O_RDWR|O_CREAT, 0666) o
+r die ("Cannot tie the dbm file");

untie(%simple_hash);


$simple_hash{"hi"} = "this works";

tie(%simple_hash,"NDBM_File","samplefile.dbmx",O_RDWR|O_CREAT, 0666) o
+r die ("Cannot tie the dbm file");
untie(%simple_hash);


my %new_hash;

tie(%new_hash,"NDBM_File","samplefile.dbmx",O_RDWR|O_CREAT, 0666) or d
+ie ("Cannot tie the dbm file");

foreach my $keys (%new_hash)
{
    print "$new_hash{$keys}\n";
}

untie(%new_hash);
[download]

This code doesn't print out anything. Shouldn't it dump everything in the dbm file(First two times) and then read them back when I it again the last time. Also two dbm files are created with .pag and .dir extension. I am basically looking at a small storage sort of thing for my hashes.

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