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EVL and NVL
Message
From
19/05/2004 10:10:55
Fabio Lunardon
Lunacom
Marostica, Italy
 
 
To
19/05/2004 09:58:04
Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivia
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Title:
Re: EVL and NVL
Miscellaneous
Thread ID:
00905138
Message ID:
00905270
Views:
13

I hadn't experimented, and didn't know that NULL AND .F. = .F. I would have expected NULL, but I think that .F. actually makes more sense.


Sorry, I'm not clear ?
NULL logicOp AnyLogicValue  => .NULL.
What I want to say it is:
if a logic value is NULL, VFP not cut the evaluation, but the result is NULL
? NULL and stampa(1) or .F. AND  stampa(2) && <= 1 NULL
? NULL and stampa(1) or NULL AND  stampa(2) && <= 1 2 NULL
PROCEDURE stampa(x)
 ?? x,CHR(9)
Fabio
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