JESS: NULL and Jess

2005-05-26 Thread lilu
Hello.
How can I check that Java object is not null in Jess?
Sencerely, Ilona Karpova


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Re: JESS: NULL and Jess

2005-05-26 Thread ejfried
I think lilu wrote:
 Hello.
 How can I check that Java object is not null in Jess?
 Sencerely, Ilona Karpova

The Jess equivalent of Java null is the symbol nil. So you can check
if a variable ?x is not null with

(if (neq ?x nil) then ...



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Sandia National LabsFAX:   (925) 294-2234
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