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2.5 KiB
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50 lines
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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>Appendix B. Generators and Gatherers</TITLE>
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<BODY>
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<meta name="description" value=" Generators and Gatherers">
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<meta name="keywords" value="clm">
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<meta name="resource-type" value="document">
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<meta name="distribution" value="global">
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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=tex2html6222 HREF="node363.html"><IMG ALIGN=BOTTOM ALT="next" SRC="icons/next_motif.gif"></A> <A NAME=tex2html6220 HREF="clm.html"><IMG ALIGN=BOTTOM ALT="up" SRC="icons/up_motif.gif"></A> <A NAME=tex2html6214 HREF="node361.html"><IMG ALIGN=BOTTOM ALT="previous" SRC="icons/previous_motif.gif"></A> <A NAME=tex2html6224 HREF="node1.html"><IMG ALIGN=BOTTOM ALT="contents" SRC="icons/contents_motif.gif"></A> <A NAME=tex2html6225 HREF="index.html"><IMG ALIGN=BOTTOM ALT="index" SRC="icons/index_motif.gif"></A> <BR>
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<B> Next:</B> <A NAME=tex2html6223 HREF="node363.html"> Introduction</A>
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<B>Up:</B> <A NAME=tex2html6221 HREF="clm.html">Common Lisp the Language</A>
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<B> Previous:</B> <A NAME=tex2html6215 HREF="node361.html"> Primitives</A>
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<HR> <P>
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<H1><A NAME=SECTION003500000000000000000>Appendix B.<br.Generators and Gatherers</A></H1>
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By Crispin Perdue and Richard C. Waters
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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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<A NAME=GENERATORS><TT>PREFACE:</TT></A>
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Generators and gatherers are yet another
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approach, closely related to series,
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to providing iteration in a functional style.
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<P>
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The remainder of this chapter consists of a description by Crispin Perdue
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and Richard C. Waters of their work on an existing implementation of
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generators and gatherers. I have edited the chapter only very lightly to
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conform to the overall style of this book. Please see the Preface to this
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book for more information about the genesis of the generators/gatherers
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approach and its relationship to the work of X3J13.
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<P>
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<blockquote>
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-Guy L. Steele Jr.
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</blockquote>
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<img align=bottom alt="change_end" src="gif/change_end.gif">
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<HR>
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<UL>
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<LI> <A NAME=tex2html6226 HREF="node363.html#SECTION003510000000000000000"> Introduction</A>
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<LI> <A NAME=tex2html6227 HREF="node364.html#SECTION003520000000000000000"> Generators</A>
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<LI> <A NAME=tex2html6228 HREF="node365.html#SECTION003530000000000000000"> Gatherers</A>
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<LI> <A NAME=tex2html6229 HREF="node366.html#SECTION003540000000000000000"> Discussion</A>
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</UL>
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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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</BODY>
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