QUE: What was the reason for IF NOT( A IS NOT NULL) THEN
Date: 1998/03/16
Message-ID: <350d336d.422366641_at_news.nl.net>#1/1
[Quoted] I am sorry but my neurons are failing me. I know I had someone explain it to me before and it sounded so simple and logical then, that I did not make a note of it.
Can Someone Please explain me again The reason for statements like
IF NOT( A IS NOT NULL) THEN ... in e.g. the when-validate-item triggers in Forms 4.5 default blocks?
Was it because:
A. The field A has a constraint defined forcing it not to be NULL
and so the when validate field trigger gets a statement generated
forcing to check whether the condition is fulfilled: hence if NOT
<condition> THEN
OR was it
B. The contruction NOT (A IS NOT NULL) simply evaluates quickest
and even the extra NOT operator cannot undo the timegain when
evaluating A IS NOT NULL (in comparison to A IS NULL of course).
Thanks very much in advance for your effort
Wouter de Waard
Dieze_at_popin.nl
Received on Mon Mar 16 1998 - 00:00:00 CET