#!/usr/bin/perl -w

use strict;
use NDBM_File;
use Fcntl;
use Data::Dumper;

$Data::Dumper::Indent = 0;
$Data::Dumper::Purity = 1;
$Data::Dumper::Terse = 1;

my %hash;
my $filename = "test_ndbm";

my $db = tie(%hash, 'NDBM_File', $filename, O_RDWR|O_CREAT, 0640)
    or die "Cannot open $filename: $!\n";
$db->filter_store_value( sub { $_ = Dumper($_); } );
$db->filter_fetch_value( sub { $_ = eval($_) } );

my %to_be_stored = (
    this_is => { some_test => 'data' },
    which_is => 'fairly',
    complex => [0, 1, 2],
);

my @keys = keys %hash;
my $new_id = scalar(@keys);
$hash{$new_id} = \%to_be_stored;

foreach my $key (keys %hash) {
    foreach (keys %{$hash{$key}}) {
	print "hash{$key}{$_} = " . Dumper($hash{$key}{$_}) . "\n";
    }
}

undef $db;
untie $hash;