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<p>
Previous: <a href="Internal-generic-functions.html#Internal-generic-functions" accesskey="p" rel="prev">Internal generic functions</a>, Up: <a href="Internal-definitions.html#Internal-definitions" accesskey="u" rel="up">Internal definitions</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indexes.html#Indexes" title="Index" rel="index">Index</a>]</p>
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<a name="Classes"></a>
<h4 class="subsection">4.2.4 Classes</h4>
<dl>
<dt><a name="index-constant_002d"></a>Class: <strong>constant-</strong> <em>()</em></dt>
<dd><a name="go-to-the-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eCONSTANT_002d-class"></a><a name="index-Class_002c-constant_002d"></a>
<dl compact="compact">
<dt><strong>Package</strong></dt>
<dd><p><a href="The-data_002dlens_003cdot_003elenses-package.html#go-to-the-DATA_002dLENS_003cdot_003eLENSES-package"><tt>data-lens.lenses</tt></a>
</p></dd>
<dt><strong>Source</strong></dt>
<dd><p><a href="The-data_002dlens_002flens_003cdot_003elisp-file.html#go-to-the-data_002dlens_002flens_003cdot_003elisp-file"><tt>lens.lisp</tt></a> (file)
</p></dd>
<dt><strong>Direct superclasses</strong></dt>
<dd><p><tt>standard-object</tt> (class)
</p></dd>
<dt><strong>Direct methods</strong></dt>
<dd><ul>
<li> <a href="Internal-generic-functions.html#go-to-the-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eFMAP-COMMON_002dLISP_003ccolon_003e_003ccolon_003eT-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eCONSTANT_002d-method"><tt>fmap</tt></a> (method)
</li><li> <tt>print-object</tt> (method)
</li><li> <a href="Internal-generic-functions.html#go-to-the-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eUNCONSTANT-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eCONSTANT_002d-method"><tt>unconstant</tt></a> (method)
</li></ul>
</dd>
<dt><strong>Direct slots</strong></dt>
<dd><dl>
<dt><a name="index-_0025v"></a>Slot: <strong>%v</strong></dt>
<dd><a name="index-Slot_002c-_0025v"></a>
<dl compact="compact">
<dt><strong>Initargs</strong></dt>
<dd><p><tt>:value</tt>
</p></dd>
<dt><strong>Readers</strong></dt>
<dd><p><a href="Internal-generic-functions.html#go-to-the-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eUNCONSTANT-generic-function"><tt>unconstant</tt></a> (generic function)
</p></dd>
</dl>
</dd></dl>
</dd>
</dl>
</dd></dl>
<dl>
<dt><a name="index-identity_002d"></a>Class: <strong>identity-</strong> <em>()</em></dt>
<dd><a name="go-to-the-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eIDENTITY_002d-class"></a><a name="index-Class_002c-identity_002d"></a>
<dl compact="compact">
<dt><strong>Package</strong></dt>
<dd><p><a href="The-data_002dlens_003cdot_003elenses-package.html#go-to-the-DATA_002dLENS_003cdot_003eLENSES-package"><tt>data-lens.lenses</tt></a>
</p></dd>
<dt><strong>Source</strong></dt>
<dd><p><a href="The-data_002dlens_002flens_003cdot_003elisp-file.html#go-to-the-data_002dlens_002flens_003cdot_003elisp-file"><tt>lens.lisp</tt></a> (file)
</p></dd>
<dt><strong>Direct superclasses</strong></dt>
<dd><p><tt>standard-object</tt> (class)
</p></dd>
<dt><strong>Direct methods</strong></dt>
<dd><ul>
<li> <a href="Internal-generic-functions.html#go-to-the-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eFMAP-COMMON_002dLISP_003ccolon_003e_003ccolon_003eT-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eIDENTITY_002d-method"><tt>fmap</tt></a> (method)
</li><li> <tt>print-object</tt> (method)
</li><li> <a href="Internal-generic-functions.html#go-to-the-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eUNIDENTITY-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eIDENTITY_002d-method"><tt>unidentity</tt></a> (method)
</li></ul>
</dd>
<dt><strong>Direct slots</strong></dt>
<dd><dl>
<dt><a name="index-_0025v-1"></a>Slot: <strong>%v</strong></dt>
<dd><a name="index-Slot_002c-_0025v-1"></a>
<dl compact="compact">
<dt><strong>Initargs</strong></dt>
<dd><p><tt>:value</tt>
</p></dd>
<dt><strong>Readers</strong></dt>
<dd><p><a href="Internal-generic-functions.html#go-to-the-DATA_002dLENS_003cdot_003eLENSES_003ccolon_003e_003ccolon_003eUNIDENTITY-generic-function"><tt>unidentity</tt></a> (generic function)
</p></dd>
</dl>
</dd></dl>
</dd>
</dl>
</dd></dl>
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