Another question ... :~)
In CLIPS there is a feature which expands multifield variables into
single function parameters. The following example illustrates that best:
(bind ?m (create$ a b c))
(format t "1: %s 2: %s 3: %s\n" $?m)
i.e. by specifying the $ the multifield will be expanded.
Basically that equals (nth$ 1 ?m) (nth$ 2 ?m) (nth$ 3 ?m) in that case
but much simpler. Is there any way to do that in Jess?
Btw. I experimented with the (defadvice ) and tried this:
(defadvice before format (bind $?argv (create$ t "1: %s 2: %s 3: %s\n"
$?m)))
(format)
(undefadvice format)
but that ignored for some reason the 't' (or nil or whatever I
specified) and complained:
Message: Bad router 1: %s 2: %s 3: %s
Or
(defadvice before format (bind $?argv (create$ $?argv)))
(format t "1: %s 2: %s 3: %s\n" $?m)
(undefadvice format)
results in
Message: Not a string: "a b c" (type = LIST).
which is the same error as if I call the function as on the very top
(which is OK assuming that the multifield does not get expanded).
I also tried all variations I could think of but couldn't get it to
work. Any advice :~) ??
Thanks a lot,
tge
--
Thomas Gentsch
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