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![]() | Pack logtalk -- logtalk-3.81.0/manuals/_sources/refman/directives/discontiguous_1.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
directive
.. index:: pair: discontiguous/1; Directive .. _directives_discontiguous_1:
::
discontiguous(Name/Arity)
discontiguous((Name/Arity, ...))
discontiguous([Name/Arity, ...])
discontiguous(Name//Arity)
discontiguous((Name//Arity, ...))
discontiguous([Name//Arity, ...])
Declares :term:`discontiguous <discontiguous predicate>` predicates and discontiguous grammar rule non-terminals. The use of this directive should be avoided as not all :term:`backend Prolog compilers <backend Prolog compiler>` support discontiguous predicates.
.. warning::
Some backend Prolog compilers declare the atom discontiguous
as
an operator for a lighter syntax. But this makes the code non-portable
and is therefore a practice best avoided.
::
discontiguous(+predicate_indicator_term)
discontiguous(+non_terminal_indicator_term)
::
:- discontiguous(counter/1)
.
:- discontiguous((lives/2, works/2))
.
:- discontiguous([db/4, key/2, file/3])
.