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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 example compares defaulty and tagged data representations using the ports_profiler tool. The example defines both defaulty and tagged objects implementing the same predicate. This predicate, count_atomics/3, counts the number of atoms and the number of numbers in a list that can contain atoms, numbers, and other types of terms that are irrelevant. Running the same query for both representations, the ports_profiler tool is used to highlight their performance difference.

For a detailed analysis of this example, see the following blog post:

https://logtalk.org/2019/12/17/the-cost-of-defaulty-representations.html