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34 lines
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<TITLE>CLHS: Section 3.1.2.1.3</TITLE>
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<H1><A REV=MADE HREF="http://www.lispworks.com/"><IMG WIDTH=80 HEIGHT=65 ALT="[LISPWORKS]" SRC="../Graphics/LWSmall.gif" ALIGN=Bottom></A><A REL=TOP HREF="../Front/index.htm"><IMG WIDTH=237 HEIGHT=65 ALT="[Common Lisp HyperSpec (TM)]" SRC="../Graphics/CLHS_Sm.gif" ALIGN=Bottom></A> <A REL=PREV HREF="03_ababd.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="03_aba.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="03_abaca.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
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<H2>
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3.1.2.1.3 Self-Evaluating Objects</H2> <P>
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A <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> that is neither a <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A> nor a <A REL=DEFINITION HREF="26_glo_c.htm#cons"><I>cons</I></A> is defined to be a <A REL=DEFINITION HREF="26_glo_s.htm#self-evaluating_object"><I>self-evaluating object</I></A>. <I>Evaluating</I> such an <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A> <A REL=DEFINITION HREF="26_glo_y.htm#yield"><I>yields</I></A> the <A REL=DEFINITION HREF="26_glo_s.htm#same"><I>same</I></A> <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A> as a result. <P>
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Certain specific <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbols</I></A> and <A REL=DEFINITION HREF="26_glo_c.htm#cons"><I>conses</I></A> might also happen to be ``self-evaluating'' but only as a special case of a more general set of rules for the <A REL=DEFINITION HREF="26_glo_e.htm#evaluation"><I>evaluation</I></A> of <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbols</I></A> and <A REL=DEFINITION HREF="26_glo_c.htm#cons"><I>conses</I></A>; such <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>objects</I></A> are not considered to be <A REL=DEFINITION HREF="26_glo_s.htm#self-evaluating_object"><I>self-evaluating objects</I></A>. <P>
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The consequences are undefined if <A REL=DEFINITION HREF="26_glo_l.htm#literal"><I>literal</I></A> <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>objects</I></A> (including <A REL=DEFINITION HREF="26_glo_s.htm#self-evaluating_object"><I>self-evaluating objects</I></A>) are destructively modified. <P>
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<A REL=CHILD HREF="03_abaca.htm"><H2>
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3.1.2.1.3.1 Examples of Self-Evaluating Objects</H2></A><P><P><HR>The following <A REL=META HREF="../Front/X3J13Iss.htm">X3J13 cleanup issue</A>, <I>not part of the specification</I>, applies to this section:<P><UL><LI> <A REL=CHILD HREF="../Issues/iss145.htm">EVAL-OTHER:SELF-EVALUATE</A><P></UL><HR>
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<A REL=NAVIGATOR HREF="../Front/StartPts.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Starting Points]" SRC="../Graphics/StartPts.gif" ALIGN=Bottom></A><A REL=TOC HREF="../Front/Contents.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Contents]" SRC="../Graphics/Contents.gif" ALIGN=Bottom></A><A REL=INDEX HREF="../Front/X_Master.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Index]" SRC="../Graphics/Index.gif" ALIGN=Bottom></A><A REL=INDEX HREF="../Front/X_Symbol.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Symbols]" SRC="../Graphics/Symbols.gif" ALIGN=Bottom></A><A REL=GLOSSARY HREF="../Body/26_a.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Glossary]" SRC="../Graphics/Glossary.gif" ALIGN=Bottom></A><A HREF="../Front/X3J13Iss.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Issues]" SRC="../Graphics/Issues.gif" ALIGN=Bottom></A><BR>
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