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I have a database in prolog, all I want to do is enuamrate through its element and print one by one. How can this be done?
fact(is(mike,asthmatic)).
fact(has(andy,highPressure)).
fact(is(mike,smoker)).
I have written this, which works ok but it removes elements from the database, so I want to access them without removing.
print:-
retract(factA(P)),
write(factA(P)),nl,
fail.
print.
You might also consider using
forall/2predicate: