On Wed, Mar 26, 2008 at 5:09 PM,  <[EMAIL PROTECTED]> wrote:

>  So if in your example delta(time) was < 0 your definition is consistent
>  but unusual (at least for me).

The Piper is enjoying a short break that he urgently needed. I have
given him a lot of trouble while he did the structure stuff. This
example seems to be just pipe dream and not actually working or at
least incomplete.

Records go through the "first reading" first and then through the
"second reading" - so once the run-in cycle is done, the "second
reading" holds the first record, and the "first reading" holds the
second record of your stream. In that sense, the definition of delta()
conforms the Principle of Least Astonishment.

PS And yes, I was a bit confused about this too since I had originally
coded them wrong too. My examples dealt mostly with TOD clocks and
when I got negative delta's I incorrectly blamed it to the negative
TOD clock (we know clocks tick backwards, how else would we claim
"time is running out" ;-)

Rob
--
Rob van der Heij
Velocity Software GmbH
http://velocitysoftware.com/

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