If you don't always want the value, just use FIRSTKEY/NEXTKEY, like 
{
    my $X = tied %maillist;
    my $key = $X->FIRSTKEY;
    while(defined $key ){
         next unless $key =~ /^rubber/;
         ...

         $key = $X->NEXTKEY($key);
    }
}

[download]
See perltie for more.

In reply to Re: hash on memory or disk? by Anonymous Monk
in thread hash on memory or disk? by js1

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