Cannot use an undefined hash key

[Andreas]

Hi,

the modul is great (true multi-level hash/array support).

I have a problem with undefined hash keys. Here is my test script:

>>>
use strict;

use Fcntl;
use DBM::Deep;

my %string;
tie %string, "DBM::Deep", {file => 'test_memory.db',type => DBM::Deep-
>TYPE_HASH};

my %empty;

print $string{ '' };
print "OK quota\n";
print $string{ $empty{'empty'} };
print "OK empty hash element\n";
<<<

perl test_undef_ref.pl
OK quota
DBM::Deep: Cannot use an undefined hash key. at test_undef_ref.pl line
15

I have the same problem, if I fetch a value from a mysql-db with value
NULL:

Field = Value
empty = NULL

my $ref = $sth->fetchrow_hashref()

print $string{ $$ref{'empty'} };

Is there an option to set undefined hash keys automatically to empty
string?

Greetings
Andy

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