Re: [Jason-users] Add predicates (beliefs) to a list

[Jomi H. <jom...@gm...>]

Hi Helio, 

Variables do not change the value in Jason (as in Prolog) — they are more like math vars, and less like a programming vars. So, in your code, the value of L is set as [] and cannot change later.

If you want to build lists from Belief Base, I’d suggest to use .findall:

	.findall( focus_rule(H,B), focus_rule(H,B), L);
	.send(A, tell, L).

HTH,

Jomi


> On 28 Oct 2019, at 14:10, Helio Henrique Lopes <hel...@gm...> wrote:
> 
> Thanks Jomi,
> 
> So I think I did not understand how to capture de predicates into the variables (unification). Can I do something like this?
> 
> /* Beliefs (the ones that I want to transmit to other agents) /*
> focus_rule(mushroom(m1), [death_cap(m1)])
> focus_rule(mushroom(m1), [caesar_mushroom(m1)])
> 
> /* Action plan. Get every belief 'focus_rule(...)' and send them to agent A. */
> +!query(P, A): <-
>    L = []
>    for (focus_rule(H,B)) {
>       X =  focus_rule(H,B);
>       L = [X|L];
>     };
>     .send(A, tell, L).
> 
> I am sorry if this question is very basic or simple, but I really did not see similar examples.
> 
> Thanks!!
> 
> --
> Helio Henrique L. C. Monte-Alto
> 
> Em seg, 28 de out de 2019 às 13:51, Jomi Hubner <jom...@gm...> escreveu:
> Hello Helio,
> 
> It is quite simple: just send a list of predicates, as in
> 
>         .send(bob,tell,[a,b,c]). 
> 
> HTH,
> 
> Jomi
> 
> > On 28 Oct 2019, at 12:02, Helio Henrique Lopes <hel...@gm...> wrote:
> > 
> > Hello,
> > 
> > I have a case in which I want an agent to send  a list of beliefs to another agent. I want to do it in one single message, thus the idea is sending a predicate containing, among other things, this list of predicates. What would be the best way to do this?
> > 
> > Thanks,
> > Helio
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