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<span id="reinitialize_002dinstance"></span><div class="header">
<p>
Next: <a href="shared_002dinitialize.html" accesskey="n" rel="next">shared-initialize</a>, Previous: <a href="allocate_002dinstance.html" accesskey="p" rel="prev">allocate-instance</a>, Up: <a href="Objects-Dictionary.html" accesskey="u" rel="up">Objects Dictionary</a> </p>
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<hr>
<span id="reinitialize_002dinstance-_005bStandard-Generic-Function_005d"></span><h4 class="subsection">7.7.4 reinitialize-instance [Standard Generic Function]</h4>
<span id="Syntax_003a_003a-13"></span><h4 class="subsubheading">Syntax::</h4>
<p><code>reinitialize-instance</code> <i>instance <span class="roman">&rest</span> initargs <span class="roman">&key</span> <span class="roman">&allow-other-keys</span></i> ⇒ <i>instance</i>
</p>
<span id="Method-Signatures_003a_003a-2"></span><h4 class="subsubheading">Method Signatures::</h4>
<p><code>reinitialize-instance</code> <i><span class="roman">(</span><i>instance</i> <b>standard-object</b><span class="roman">)</span> <span class="roman">&rest</span> initargs</i>
</p>
<span id="Arguments-and-Values_003a_003a-92"></span><h4 class="subsubheading">Arguments and Values::</h4>
<p><i>instance</i>—an <i>object</i>.
</p>
<p><i>initargs</i>—an <i>initialization argument list</i>.
</p>
<span id="Description_003a_003a-131"></span><h4 class="subsubheading">Description::</h4>
<p>The <i>generic function</i> <b>reinitialize-instance</b> can be used to change
the values of <i>local slots</i> of an <i>instance</i> according to
<i>initargs</i>.
This <i>generic function</i> can be called by users.
</p>
<p>The system-supplied primary <i>method</i> for <b>reinitialize-instance</b>
checks the validity of <i>initargs</i> and signals an error if
an <i>initarg</i> is supplied that is not declared as valid.
The <i>method</i> then calls the generic function <b>shared-initialize</b>
with the following arguments: the <i>instance</i>,
<b>nil</b> (which means no <i>slots</i>
should be initialized according to their initforms), and the
<i>initargs</i> it received.
</p>
<span id="Side-Effects_003a_003a-6"></span><h4 class="subsubheading">Side Effects::</h4>
<p>The <i>generic function</i> <b>reinitialize-instance</b> changes the values of <i>local slots</i>.
</p>
<span id="Exceptional-Situations_003a_003a-23"></span><h4 class="subsubheading">Exceptional Situations::</h4>
<p>The system-supplied primary <i>method</i> for <b>reinitialize-instance</b>
signals an error if an <i>initarg</i> is supplied that is not declared as valid.
</p>
<span id="See-Also_003a_003a-113"></span><h4 class="subsubheading">See Also::</h4>
<p><a href="Initialize_002dInstance.html">Initialize-Instance</a>
,
<a href="Shared_002dInitialize.html">Shared-Initialize</a>
,
<a href="update_002dinstance_002dfor_002dredefined_002dclass.html">update-instance-for-redefined-class</a>
,
<a href="update_002dinstance_002dfor_002ddifferent_002dclass.html">update-instance-for-different-class</a>
,
<a href="slot_002dboundp.html">slot-boundp</a>
,
<a href="slot_002dmakunbound.html">slot-makunbound</a>
,
<a href="Reinitializing-an-Instance.html">Reinitializing an Instance</a>,
<a href="Rules-for-Initialization-Arguments.html">Rules for Initialization Arguments</a>,
<a href="Declaring-the-Validity-of-Initialization-Arguments.html">Declaring the Validity of Initialization Arguments</a>
</p>
<span id="Notes_003a_003a-75"></span><h4 class="subsubheading">Notes::</h4>
<p><i>Initargs</i> are declared as valid by using the
<tt>:initarg</tt> option to <b>defclass</b>, or by defining
<i>methods</i> for <b>reinitialize-instance</b>
or <b>shared-initialize</b>. The keyword name
of each keyword parameter specifier in the <i>lambda list</i> of any
<i>method</i>
defined on <b>reinitialize-instance</b> or <b>shared-initialize</b> is
declared as a valid initialization argument name for all
<i>classes</i> for
which that <i>method</i> is applicable.
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