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counting atoms/ elements in list (new at prolog)
got the element part right but still not sure about the atom part. len([],0). len([_|T],N) :- len(T,M),N is M+1. ?- len([[1,2],[3,4],4,5]). X = 3; Atoms should be X = 6; any help or where can I look on the web?- johanprolog
- Post #2
- Forum: Prolog
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counting atoms/ elements in list (new at prolog)
% to get elements in list mymember(X,[X|_]). mymember(X,[_|T]) :- mymember(X , T). ?- mymember(X,[a,b,[1,2,3],c]). X = a ; X = b ; X = [1, 2, 3] ; X = c ; %to get atoms in list. mymember(X,[X|_]). mymember(X,[_|T]) :- mymember(X , T). mymember(X,[H|_]) :- mymember(X , H). ?-...- johanprolog
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- Replies: 1
- Forum: Prolog
