Hi,
You can't do pattern matching inside of deffunctions, only inside of
defrules and defqueries. You could recast this as a rule like
(defrule esborraSortir
?e <- (esborraSortir ?numero ?pal)
?fact <- (sortir (str-cat ?numero "-" ?pal) ?)
=>
(retract ?e ?fact))
and then to use it you could do this:
(assert (esborraSortir 5 ors))
(run)
I think Jordi Cardona wrote:
> Hi all,
>
> Excuse my poor english, please.
>
> I have a question about use facts in deffunction, I explain me with an
> example
>
> (deffunction esborraSortir (?numero ?pal)
> ?fact <- (sortir (str-cat ?numero "-" ?pal) ?)
> (retract ?fact)
> )
>
> In my knowledge base, I have facts like:
>
> (sortir "5-ors" 5)
>
> When I execute:
>
> (esborraSortir 5 ors)
>
> Jess don't work and answer:
>
> Jess reported an error in routine Variable.resolveValue while
> executing deffunction esborraSortir while executing
> (esborraSortir 5 ors).
> Message: Undefined variable (no binding) fact.
> Program text: ( esborraSortir 5 ors ) at line 0.
> Undefined variable (no binding)
>
> It's possible to use question mark (?) in this case?
>
> Thanks for answers or comments
>
> Jordi Cardona
>
>
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