- asserta(Clause):
Asserts Clause as the first clause in its predicate.
- assertz(Clause):
Asserts Clause as the last clause in its predicate.
- assert(Clause):
The same as assertz(Clause)
- retract(Clause):
Removes from the predicate a clause that unifies Clause. Upon
backtracking, removes the next unifiable clause.
- retractall(Clause):
Removes from the predicate all clauses that unify Clause.
- abolish(Functor/Arity):
Completely removes the dynamic predicate identified by Functor/Arity
from the program area.
- clause(Head,Body):
It is true if Head and Body unify with the head and the body of
a dynamically asserted (or consulted) clause. The body of a fact is
true. Gives multiple solutions upon backtracking.
Neng-Fa Zhou
2010-03-09
