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Well, this works, but it does show some limitations in the code. I'm adding this to my examples/ directory. Thanks for the pointer.

use strict; use warnings; use aliased 'AI::Prolog::Parser'; use aliased 'AI::Prolog::Term'; use aliased 'AI::Prolog::Engine'; my $database = Parser->consult(<<'END_PROLOG'); perform(grasp, state(middle, middle, onbox, hasnot), state(middle, middle, onbox, has)). perform(climb, state(MP, BP, onfloor, H), state(MP, BP, onbox, H)). perform(push(P1,P2), state(P1, P1, onfloor, H), state(P2, P2, onfloor, H)). perform(walk(P1,P2), state(P1, BP, onfloor, H), state(P2, BP, onfloor, H)). /* getfood(state(_,_,_,has)). */ /* I'll have to fix this soonish! */ getfood(state(Bogus1,Bogus2,Bogus3,has)). getfood(S1) :- perform(Act, S1, S2), nl, print(S1), print(Act), getfood(S2). END_PROLOG my $parser = Parser->new("getfood(state(atdoor,atwindow,onfloor,hasnot +))."); my $query = Term->new($parser); my $engine = Engine->new($query,$database); print $engine->run;


New address of my CGI Course.

In reply to Re^2: Bringing Logic Programming to Perl by Ovid
in thread Bringing Logic Programming to Perl by Ovid

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