Didn't we just answer this question the other day on this list? Yes,
in older versions of Jess, that last "else" would be interpreted as
one of the elements of the first "else" clause, and taking the "else"
would execute both function calls. But Jess 7.1 parses if-then-else
more carefully, and the repeated "else" is caught and reported as an
error.
On Sep 6, 2010, at 2:15 AM, [email protected] wrote:
I observed a difference between 7.1 and 7.0 where an "if" can have
multiple "else" was not result an error into 7.0 but 7.1 can catch
this wrong block. Is this true or I have misunderstood the thing.
Sample code :
(if (> 5 9) then
(printout t "Test -1 ")
else
(printout t "Test -2 ")
else
(printout t "Test - 3 ")
)
In 7.0 the code results in :: Test-2 Test-3
While 7.1 :: Exception in thread "main" Jess reported an error in
routine Jesp.Jesp.parseFuncall.
Message: No new blocks after 'else' block in 'if' at token 'else'.
Avdhesh DIXIT
Consultant Specialist | HSBC Technology and Services - Global
Technology
HSBC Software Development (India) Private Limited
---------------------------------------------------------
Ernest Friedman-Hill
Informatics & Decision Sciences, Sandia National Laboratories
PO Box 969, MS 9012, Livermore, CA 94550
http://www.jessrules.com
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