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.. This file is part of Logtalk https://logtalk.org/ SPDX-FileCopyrightText: 1998-2024 Paulo Moura <pmoura@logtalk.org> SPDX-License-Identifier: Apache-2.0
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
.. rst-class:: align-right
built-in method
.. index:: pair: abolish/1; Built-in method .. _methods_abolish_1:
::
abolish(Predicate)
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 :ref:methods_asserta_1
or :ref:methods_assertz_1
built-in methods) can be abolished.
When the predicate indicator is declared in a :ref:directives_uses_2
or :ref:directives_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.
::
abolish(@predicate_indicator)
- one
| Predicate
is a variable:
| instantiation_error
| Functor
is a variable:
| instantiation_error
| Arity
is a variable:
| instantiation_error
| 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 :term:this
:
| abolish(Predicate)
| To abolish a public or protected dynamic predicate in :term:self
:
| ::abolish(Predicate)
| To abolish a public dynamic predicate in an explicit object:
| Object::abolish(Predicate)
.. seealso::
:ref:methods_asserta_1
,
:ref:methods_assertz_1
,
:ref:methods_clause_2
,
:ref:methods_retract_1
,
:ref:methods_retractall_1
:ref:directives_dynamic_0
,
:ref:directives_dynamic_1
,
:ref:directives_uses_2
,
:ref:directives_use_module_2