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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

http://www.apache.org/licenses/LICENSE-2.0

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.. rst-class:: align-right

directive

.. index:: pair: public/1; Directive .. _directives_public_1:

public/1

Description

::

public(Name/Arity) public((Name/Arity, ...)) public([Name/Arity, ...])

public(Name//Arity) public((Name//Arity, ...)) public([Name//Arity, ...])

public(op(Precedence,Associativity,Operator)) public((op(Precedence,Associativity,Operator), ...)) public([op(Precedence,Associativity,Operator), ...])

Declares :term:`public <public predicate>` predicates, public grammar rule non-terminals, and public operators. A public predicate can be called from any object. A public non-terminal can be used as an argument in :ref:methods_phrase_2 and :ref:methods_phrase_3 calls from any object.

.. note::

Declaring a public operator does not make it global when the entity holding the scope directive is compiled and loaded. But declaring public operators provides a reusable specification for using them in the entity clients (e.g., in :ref:directives_uses_2 directives).

Template and modes

::

public(+predicate_indicator_term) public(+non_terminal_indicator_term) public(+operator_declaration)

Examples

::

:- public(ancestor/1).

:- public((instance/1, instances/1)).

:- public([leaf/1, leaves/1]).

.. seealso::

:ref:directives_private_1, :ref:directives_protected_1, :ref:methods_predicate_property_2