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<a href="../../index.html">contents</a> > <a href="../index.html">reference manual</a> > <a href="../index.html#directives">directives</a>
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<h2><code>object/1-5</code></h2>
<h4>Description</h4>
<blockquote>
<p>
<em>Stand-alone objects</em>
</p>
<pre>object(Object)
object(Object,
implements(Protocols))
object(Object,
imports(Categories))
object(Object,
implements(Protocols),
imports(Categories))</pre>
<p>
<em>Prototypes</em>
</p>
<pre>object(Object,
extends(Objects))
object(Object,
implements(Protocols),
extends(Objects))
object(Object,
imports(Categories),
extends(Objects))
object(Object,
implements(Protocols),
imports(Categories),
extends(Objects))</pre>
<p>
<em>Instances</em>
</p>
<pre>object(Object,
instantiates(Classes))
object(Object,
implements(Protocols),
instantiates(Classes))
object(Object,
imports(Categories),
instantiates(Classes))
object(Object,
implements(Protocols),
imports(Categories),
instantiates(Classes))</pre>
<p>
<em>Classes</em>
</p>
<pre>object(Object,
specializes(Classes))
object(Object,
implements(Protocols),
specializes(Classes))
object(Object,
imports(Categories),
specializes(Classes))
object(Object,
implements(Protocols),
imports(Categories),
specializes(Classes))</pre>
<p>
<em>Metaclasses</em>
</p>
<pre>object(Object,
instantiates(Classes),
specializes(Classes))
object(Object,
implements(Protocols),
instantiates(Classes),
specializes(Classes))
object(Object,
imports(Categories),
instantiates(Classes),
specializes(Classes))
object(Object,
implements(Protocols),
imports(Categories),
instantiates(Classes),
specializes(Classes))</pre>
<p>
Starting object directive.
</p>
</blockquote>
<h4>Template and modes</h4>
<blockquote>
<p>
<em>Stand-alone objects</em>
</p>
<pre>object(+object_identifier)
object(+object_identifier,
implements(+implemented_protocols))
object(+object_identifier,
imports(+imported_categories))
object(+object_identifier,
implements(+implemented_protocols),
imports(+imported_categories))</pre>
<p>
<em>Prototypes</em>
</p>
<pre>object(+object_identifier,
extends(+extended_objects))
object(+object_identifier,
implements(+implemented_protocols),
extends(+extended_objects))
object(+object_identifier,
imports(+imported_categories),
extends(+extended_objects))
object(+object_identifier,
implements(+implemented_protocols),
imports(+imported_categories),
extends(+extended_objects))</pre>
<p>
<em>Instances</em>
</p>
<pre>object(+object_identifier,
instantiates(+instantiated_objects))
object(+object_identifier,
implements(+implemented_protocols),
instantiates(+instantiated_objects))
object(+object_identifier,
imports(+imported_categories),
instantiates(+instantiated_objects))
object(+object_identifier,
implements(+implemented_protocols),
imports(+imported_categories),
instantiates(+instantiated_objects))</pre>
<p>
<em>Classes</em>
</p>
<pre>object(+object_identifier,
specializes(+specialized_objects))
object(+object_identifier,
implements(+implemented_protocols),
specializes(+specialized_objects))
object(+object_identifier,
imports(+imported_categories),
specializes(+specialized_objects))
object(+object_identifier,
implements(+implemented_protocols),
imports(+imported_categories),
specializes(+specialized_objects))</pre>
<p>
<em>Metaclasses</em>
</p>
<pre>object(+object_identifier,
instantiates(+instantiated_objects),
specializes(+specialized_objects))
object(+object_identifier,
implements(+implemented_protocols),
instantiates(+instantiated_objects),
specializes(+specialized_objects))
object(+object_identifier,
imports(+imported_categories),
instantiates(+instantiated_objects),
specializes(+specialized_objects))
object(+object_identifier,
implements(+implemented_protocols),
imports(+imported_categories),
instantiates(+instantiated_objects),
specializes(+specialized_objects))</pre>
</blockquote>
<h4>Examples</h4>
<blockquote>
<pre>:- object(list).
:- object(list,
implements(listp)).
:- object(list,
extends(compound)).
:- object(list,
implements(listp),
extends(compound)).
:- object(object,
imports(initialization),
instantiates(class)).
:- object(abstract_class,
instantiates(class),
specializes(object)).
:- object(agent,
imports(private::attributes)).</pre>
</blockquote>
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