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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

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.. rst-class:: align-right

directive

.. index:: pair: dynamic/0; Directive .. _directives_dynamic_0:

dynamic/0

Description

::

dynamic

Declares an entity and its contents as dynamic. Dynamic entities can be abolished at runtime.

As entities created at runtime (using the :ref:predicates_create_object_4, :ref:predicates_create_protocol_3, and :ref:predicates_create_category_4 built-in predicates) are always dynamic, this directive is only necessary in the rare cases where we want to define dynamic entities in source files.

.. warning::

Some backend Prolog compilers declare the atom dynamic as an operator for a lighter syntax, forcing writing this atom between parenthesis when using this directive.

Template and modes

::

dynamic

Examples

::

:- dynamic.

.. seealso::

:ref:directives_dynamic_1, :ref:predicates_object_property_2, :ref:predicates_protocol_property_2, :ref:predicates_category_property_2