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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.

% start by loading the example:

| ?- logtalk_load(missing_data(loader)). ...

% in the first data processing example, we provide defaults for the missing data:

| ?- data_processing::print.

gomez father: john doe mother: jane doe

pubert father: gomez mother: morticia

pugsley father: gomez mother: morticia

morticia father: john doe mother: jane doe

wednesday father: gomez mother: morticia

true

% in the second data processing example, we simply skip missing data:

| ?- data_processing::print_complete. pubert father: gomez mother: morticia

pugsley father: gomez mother: morticia

wednesday father: gomez mother: morticia

true

% in the third data processing example, we throw an error on missing data:

| ?- catch(data_processing::check, Error, true). Error = missing_father-gomez true