ted@imsvax.UUCP (Ted Holden) (08/14/86)
Has anyone gotten good with Turbo Prolog yet? I kind of need help with two of the items in the manual. First, I was able to get sample program 25 (the one which was screwed up from jump) to work after a fashion via: /* Program 25 */ domains list = integer* predicates member(integer,list) intersect(list,list,list) clauses member(X,[X|_]). member(X,[_|Y]):- member(X,Y). intersect([],_,_). intersect([H|T],Y,[H|T2]):- member(H,Y),intersect(T,Y,T2). which, given the goal "intersect(X,[1,2,3],[2,3,5,6,7])", yeilds three solutions: [], [2], [2,3] only the last of which you want. Any better solutions? Secondly, does anyone understand the meaning or usage of the predicate "moredata(file)" in the sample code on page 141? The same thing is done on the next page, the predicate being called "repeat" there. Any help would be appreciated. Ted Holden