Hi,all great monks,I need your wisdom to help me.

I created a hash in SDBM_File.And one of its value is reference(ARRAY,HASH,whatever).It's failed when I dereference it to its original values,perl tell me it's undef.I researched it,then I found when I give a reference to a hash key,the hash just write the literal mem address into SDBM_File(e.g. 'ARRAY(0x123456)').when I read this key's value, it just give me the literal address string,and tell me it's not a ref.

use Fcntl;
use SDBM_File;
tie(%h,'SDBM_File','foodbm',O_RDWR|O_CREAT,0640) || die $!;
$h{'a'}=1;
%h{'b'}=[2,3];
if (ref $h{'b'})
{
   print "it's a ref,ok\n";
   # perl will not print this!
}
else 
{
   print "it's not a ref,just $h{'b'}\n"; 
   # this is what perl printed! 
}
if (!defined $h{'b'}->[0])
{
  print "\$h{'b'}->[0] not defined!\n";
  # perl also print this!
}
untie(%h);

[download]
Please tell me how can I store array ref or hash ref into SDBM_File and restore it to its original values. Thank you!

In reply to hash in SDBM_File by camelry

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