use strict;
use warnings;
use BerkeleyDB;

my $home = ".";
my $tableName = "testDB";
my $dbName = "testDex";

my $table = BerkeleyDB::Btree->new(
    -Filename => "$home/$tableName/$tableName",
    -Compare  => sub { my($a, $b) = @_; return $a <=> $b; }, # numeric
    -Flags    => DB_CREATE,
) or die "Could not open \'$home/$tableName/$tableName\' ... ";

my $db = BerkeleyDB::Btree->new(
     -Property => DB_DUP,        
     -Flags    => DB_CREATE,
     -Filename => "$home/$tableName/$dbName",
     -Compare => sub { my($a, $b) = @_; return $a cmp $b; }, # ascii
) or die "Could not open \'$home/$tableName/$dbName\' ... ";

sub key_sub {
   my $pkey = shift;
   my $pdata = shift;
   $_[0] = (split /\|/,$pdata)[1];
   return 0;
}

$table->associate($db, \&key_sub);
$table->db_put(1,"x|w60");
$table->db_put(2,"y|w61");

##</code><code>##

Argument "w60" isn't numeric in numeric comparison (<=>) at hhh.pl line 11.
Argument "w61" isn't numeric in numeric comparison (<=>) at hhh.pl line 11.
Argument "w60" isn't numeric in numeric comparison (<=>) at hhh.pl line 11.
Argument "w61" isn't numeric in numeric comparison (<=>) at hhh.pl line 11.

##</code><code>##

my $digits = qr/^\d+$/;

sub eitherComp {
   my($a, $b) = @_;
   return $a <=> $b if ($a =~ $digits and $b =~ $digits);
   return $a cmp $b;
}

##</code><code>##

    count = perl_call_sv(CurrentDB->compare, G_SCALAR);