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![]() | Pack logtalk -- logtalk-3.81.0/manuals/_sources/refman/methods/after_3.rst.txt |
.. 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: after/3; Built-in method .. _methods_after_3:
::
after(Object, Message, Sender)
User-defined method for handling :ref:`after events <events_definitions>`.
This method is declared in the :ref:`monitoring apis:monitoring/0` built-in
protocol as a public predicate and automatically called by the runtime for
messages sent using the :ref:control_send_to_object_2
control construct
from within objects compiled with the :ref:`events <flag_events>` flag set
to allow
.
Note that you can make this predicate scope protected or private by using,
respectively, :ref:`protected or private implementation <inheritance_scope>`
of the monitoring
protocol.
::
after(?object_identifier, ?callable, ?object_identifier) - zero_or_more
(none)
::
:- object(...,
implements(monitoring),
...)
.
% write a log message when a message is successful:
after(Object, Message, Sender)
:-
writeq(Object)
, write('::')
, writeq(Message)
,
write(' from ')
, writeq(Sender)
, nl.
.. seealso::
:ref:methods_before_3
,
:ref:predicates_abolish_events_5
,
:ref:predicates_current_event_5
,
:ref:predicates_define_events_5