note remiah <p> Hello, BrowserUK.<br><br> I see. Example XML is just 613KB.<br><br> Copying Twig object is terribly slow. I guess Data::Dumper or dclone of storable will not do any good, because it is just huge. <code> for ( $someData->children_copy( 'managedObject') ){ handle_managedObject($t, $_); } </code> Without copy, it is very fast. <code> for ( $someData->children( 'managedObject') ){ handle_managedObject($t, $_); } </code> So, I vaguely imagined rewriting managedObject sub using regex, for example ... <pre> my ($t, $element)=@_; # create rewrite rules using Twig my %rewrite_rules =( q/name="name"/ => "some value", ); #replace with regex my $buffer=$element->sprint; #get plain text of element for (keys %rewrite_rules){ $buffer =~ s/ $_ (.*?) > .*? (?=<) /${_} ${1} $rewrite_rules{$_}/sx; } #just print out without changing $element print $fh $buffer; </pre> I will do like this, if I were.<br><br> Regards and thanks for your response. </p> 1005623 1006133