On Sat, Jan 23, 2010 at 12:56 PM, Ivan Sergio Borgonovo
<mail@webthatworks.it> wrote:
> And if I can... how, why and when... because I didn't find any clear
> example in the source tree that gives me a clue about when I'd use
> one form or the other.
>
There are a few contrib modules which make good examples, you could
look at contrib/pageinspect/heapfuncs.c:heap_page_items() for
example.
--
greg