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2.1 KiB
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39 lines
2.1 KiB
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<!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML 2.0//EN">
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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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<HEAD>
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<TITLE>28.1.2.2. Creating Instances of Classes</TITLE>
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<meta name="description" value=" Creating Instances of Classes">
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<P>
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<b>Common Lisp the Language, 2nd Edition</b>
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<BR> <HR><A NAME=tex2html4974 HREF="node266.html"><IMG ALIGN=BOTTOM ALT="next" SRC="icons/next_motif.gif"></A> <A NAME=tex2html4972 HREF="node263.html"><IMG ALIGN=BOTTOM ALT="up" SRC="icons/up_motif.gif"></A> <A NAME=tex2html4966 HREF="node264.html"><IMG ALIGN=BOTTOM ALT="previous" SRC="icons/previous_motif.gif"></A> <A NAME=tex2html4976 HREF="node1.html"><IMG ALIGN=BOTTOM ALT="contents" SRC="icons/contents_motif.gif"></A> <A NAME=tex2html4977 HREF="index.html"><IMG ALIGN=BOTTOM ALT="index" SRC="icons/index_motif.gif"></A> <BR>
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<B> Next:</B> <A NAME=tex2html4975 HREF="node266.html"> Slots</A>
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<B>Up:</B> <A NAME=tex2html4973 HREF="node263.html"> Classes</A>
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<B> Previous:</B> <A NAME=tex2html4967 HREF="node264.html"> Defining Classes</A>
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<HR> <P>
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<H3><A NAME=SECTION003212200000000000000>28.1.2.2. Creating Instances of Classes</A></H3>
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<P>
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<img align=bottom alt="change_begin" src="gif/change_begin.gif"><br>
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The generic function <tt>make-instance</tt> creates and returns a new
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instance of a class. The Object System provides several mechanisms for
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specifying how a new instance is to be initialized. For example, it
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is possible to specify the initial values for slots in newly created
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instances either by giving arguments to <tt>make-instance</tt> or by
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providing default initial values.
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<P>
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Further initialization activities
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can be performed by methods written for generic functions that are
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part of the initialization protocol. The complete initialization
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protocol is described in section <A HREF="node292.html#ObjectCreationandInitializationSECTION">28.1.9</A>.
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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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