Hi Joe,
I just try your solution. Yes 'range/3' is a Pilog predicate hence
available for any Pilog rules.
It looks like it returns T if:
@Y =< 18 and @Y >= 0, in the case '(range (0 . 18))' rather than @Y < 18
and @Y > 0. Hence, to get the people under 18 similar to '(< @Y 18)' in
Lisp, I need '(range (0 . 17) @Y)'.
Good to know this solution too.
Best,
Eric
Le 14/11/2016 à 13:43, Joe Bogner a écrit :
Hi Alex,
range/3 seems to work as I expected. Should it not be used here?
(be age (Paul 19) )
(be age (Kate 17) )
(be underage (@X)
(age @X @Y)
(range (0 . 18) @Y))
(? (underage @X) )
@X=Kate
--
UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
