built-in method




Abolishes a runtime declared object dynamic predicate or an object local dynamic predicate. Only predicates that are dynamically declared at runtime (using a call to the asserta/1 or assertz/1 built-in methods) can be abolished.

When the predicate indicator is declared in a uses/2 or use_module/2 directive, the predicate is abolished in the referenced object or module. When the backend Prolog compiler supports a module system, the predicate argument can also be module qualified.

Modes and number of proofs

abolish(@predicate_indicator) - one


Predicate is a variable:
Functor is a variable:
Arity is a variable:
Predicate is neither a variable nor a valid predicate indicator:
type_error(predicate_indicator, Predicate)
Functor is neither a variable nor an atom:
type_error(atom, Functor)
Arity is neither a variable nor an integer:
type_error(integer, Arity)
Predicate is statically declared:
permission_error(modify, predicate_declaration, Name/Arity)
Predicate is a private predicate:
permission_error(modify, private_predicate, Name/Arity)
Predicate is a protected predicate:
permission_error(modify, protected_predicate, Name/Arity)
Predicate is a static predicate:
permission_error(modify, static_predicate, Name/Arity)
Predicate is not declared for the object receiving the message:
existence_error(predicate_declaration, Name/Arity)


To abolish a local dynamic predicate or a dynamic predicate in this:
To abolish a public or protected dynamic predicate in self:
To abolish a public dynamic predicate in an explicit object: