40 lines
2.2 KiB
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40 lines
2.2 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>29.3.16. Resignaling Conditions</TITLE>
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<meta name="description" value=" Resignaling Conditions">
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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=tex2html5827 HREF="node332.html"><IMG ALIGN=BOTTOM ALT="next" SRC="icons/next_motif.gif"></A> <A NAME=tex2html5825 HREF="node315.html"><IMG ALIGN=BOTTOM ALT="up" SRC="icons/up_motif.gif"></A> <A NAME=tex2html5819 HREF="node330.html"><IMG ALIGN=BOTTOM ALT="previous" SRC="icons/previous_motif.gif"></A> <A NAME=tex2html5829 HREF="node1.html"><IMG ALIGN=BOTTOM ALT="contents" SRC="icons/contents_motif.gif"></A> <A NAME=tex2html5830 HREF="index.html"><IMG ALIGN=BOTTOM ALT="index" SRC="icons/index_motif.gif"></A> <BR>
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<B> Next:</B> <A NAME=tex2html5828 HREF="node332.html"> Condition Handlers</A>
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<B>Up:</B> <A NAME=tex2html5826 HREF="node315.html"> Survey of Concepts</A>
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<B> Previous:</B> <A NAME=tex2html5820 HREF="node330.html"> Signaling Conditions</A>
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<HR> <P>
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<H2><A NAME=SECTION0033316000000000000000>29.3.16. Resignaling Conditions</A></H2>
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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 contents of this section are still a subject of some debate within X3J13.
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The reader may wish to take this section with a grain of salt.-GLS]
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<P>
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Note that signaling a condition has no side effect on that condition, and
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that there is no dynamic state contained in a condition object. As such, it
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may at times be reasonable and appropriate to consider caching condition
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objects for repeated use, re-signaling conditions from within handlers,
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or saving conditions away somewhere and re-signaling them later.
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For example, it may be desirable for the system to pre-allocate objects of type
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<tt>storage-condition</tt> so that they can be signaled when needed without
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attempting to allocate more storage.
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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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