52 lines
2.6 KiB
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52 lines
2.6 KiB
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<!Converted with LaTeX2HTML 0.6.5 (Tue Nov 15 1994) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds >
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<TITLE>28.1.8.3. Standard Meta-objects</TITLE>
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<meta name="description" value=" Standard Meta-objects">
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<b>Common Lisp the Language, 2nd Edition</b>
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<BR> <HR><A NAME=tex2html5292 HREF="node292.html"><IMG ALIGN=BOTTOM ALT="next" SRC="icons/next_motif.gif"></A> <A NAME=tex2html5290 HREF="node288.html"><IMG ALIGN=BOTTOM ALT="up" SRC="icons/up_motif.gif"></A> <A NAME=tex2html5286 HREF="node290.html"><IMG ALIGN=BOTTOM ALT="previous" SRC="icons/previous_motif.gif"></A> <A NAME=tex2html5294 HREF="node1.html"><IMG ALIGN=BOTTOM ALT="contents" SRC="icons/contents_motif.gif"></A> <A NAME=tex2html5295 HREF="index.html"><IMG ALIGN=BOTTOM ALT="index" SRC="icons/index_motif.gif"></A> <BR>
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<B> Next:</B> <A NAME=tex2html5293 HREF="node292.html"> Object Creation and </A>
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<B>Up:</B> <A NAME=tex2html5291 HREF="node288.html"> Meta-objects</A>
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<B> Previous:</B> <A NAME=tex2html5287 HREF="node290.html"> Standard Metaclasses</A>
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<HR> <P>
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<H3><A NAME=SECTION003218300000000000000>28.1.8.3. Standard Meta-objects</A></H3>
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<img align=bottom alt="change_begin" src="gif/change_begin.gif"><br>
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The Object System supplies a standard set of meta-objects, called <i>standard
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meta-objects</i>. These include the class <tt>standard-object</tt> and
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instances of the classes <tt>standard-method</tt>,
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<tt>standard-generic-function</tt>, and <tt>method-combination</tt>.
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<P>
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<UL><LI>
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The class <tt>standard-method</tt> is the default class of
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methods that are defined by the forms <tt>defmethod</tt>,
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<tt>defgeneric</tt>, <tt>generic-function</tt>, <tt>generic-flet</tt>,
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<tt>generic-labels</tt>, and <tt>with-added-methods</tt>.
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<P>
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<LI>
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The class <tt>standard-generic-function</tt> is the default class of
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generic functions defined by the forms <tt>defmethod</tt>,
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<tt>defgeneric</tt>, <tt>generic-function</tt>, <tt>generic-flet</tt>,
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<tt>generic-labels</tt>, <tt>with-added-methods</tt>, and <tt>defclass</tt>.
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<P>
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<LI> The class named <tt>standard-object</tt> is an instance of
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the class <tt>standard-class</tt> and is a superclass of every class that
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is an instance of <tt>standard-class</tt> except itself.
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<P>
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<LI> Every method combination object is an instance of a
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subclass of the class <tt>method-combination</tt>.
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<P>
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</UL>
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<br><img align=bottom alt="change_end" src="gif/change_end.gif">
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<P>
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<HR>
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<P><ADDRESS>
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AI.Repository@cs.cmu.edu
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</ADDRESS>
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