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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Compile-time-calculation/Prolog/compile-time-calculation.pro Normal file
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% Taken from RosettaCode Factorial page for Prolog
fact(X, 1) :- X<2.
fact(X, F) :- Y is X-1, fact(Y,Z), F is Z*X.
goal_expansion((X = factorial_of(N)), (X = F)) :- fact(N,F).
test :-
F = factorial_of(10),
format('!10 = ~p~n', F).