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This file is part of Logtalk https://logtalk.org/ SPDX-FileCopyrightText: 1998-2023 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.

To load this example and for sample queries, please see the SCRIPT.txt file.

This folder contains an example of using tabled predicates within objects. Currently supported compilers include B-Prolog, XSB, SWI-Prolog (when the tabling library is available), and YAP (when compiled with tabling enabled).

Current tabling implementations don't provide a solution for ignoring the implicit execution-context argument that the Logtalk compiler adds to all compiled predicates. Thus, different object sending a message for a tabled predicate will result in the equivalent of multiple tables. The same will happen if the sender of the message is a parametric object and different parameterizations are used. A possible workaround is to always send the message from the same (non-parametric) object (e.g. user).