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Pack logtalk -- logtalk-3.101.0/library/iso_3166/NOTES.md

This file is part of Logtalk https://logtalk.org/ SPDX-FileCopyrightText: 1998-2026 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.

iso_3166

This library provides generated ISO 3166 country and subdivision code lookups. The current worktree includes a real ISO 3166-1 fact table generated from the official United Nations M49 overview page, which republishes ISO alpha-2 and alpha-3 country codes together with the M49 numeric codes used here. It requires Unicode support from the backend Prolog compiler.

ISO 3166-2 subdivision data is bundled in the public facade and generated from the Debian iso-codes machine-readable JSON snapshot. Subdivision codes and country alpha-2 codes are stored as lowercase atoms to match the conventions used by the generated ISO 3166-1 country fact table, while names and categories preserve the source spelling.

To refresh the generated subdivision table, run:

$ library/iso_3166/scripts/update_iso_3166_2.sh

API documentation

Open the [../../apis/library_index.html#iso_3166](../../apis/library_index.html#iso_3166) link in a web browser.

Loading

To load all entities in this library, load the loader.lgt file:

| ?- logtalk_load(iso_3166(loader)).

Testing

To test this library predicates, load the tester.lgt file:

| ?- logtalk_load(iso_3166(tester)).