pipelined function vs. dbms_output

I don't like dbms_output.
So I came to pipelined functions.
here a small example:

create or replace
function dummy
return DBMS_DEBUG_VC2COLL
PIPELINED -- NOTE the pipelined keyword
is
begin
pipe row (to_char(sysdate, 'DD-MON-YYYY HH24:MI:SS' ));
dbms_lock.sleep(15);
pipe row (to_char(sysdate, 'DD-MON-YYYY HH24:MI:SS' ));
return;
end;
/

Make sure you set the arraysize of SQL*PLUS (or whatever) small enough, otherwise you will get a bunch of results at once, not when they occure.

set arraysize 1

select * from table(dummy());

gives

COLUMN_VALUE
--------------------
20-JAN-2009 14:24:17

and after 15 sec.

20-JAN-2009 14:24:32

It might not be a big advantage for anyone, just a thing I like.