59 lines
4.6 KiB
HTML
59 lines
4.6 KiB
HTML
<!-- Common Lisp HyperSpec (TM), version 7.0 generated by Kent M. Pitman on Mon, 11-Apr-2005 2:31am EDT -->
|
|
<HTML>
|
|
<HEAD>
|
|
<TITLE>CLHS: Symbol LAMBDA</TITLE>
|
|
<LINK HREF="../Data/clhs.css" REL="stylesheet" TYPE="text/css" />
|
|
<META HTTP-EQUIV="Author" CONTENT="Kent M. Pitman">
|
|
<META HTTP-EQUIV="Organization" CONTENT="LispWorks Ltd.">
|
|
<LINK REL=TOP HREF="../Front/index.htm">
|
|
<LINK REL=COPYRIGHT HREF="../Front/Help.htm#Legal">
|
|
<LINK REL=DISCLAIMER HREF="../Front/Help.htm#Disclaimer">
|
|
<LINK REL=PREV HREF="c_evalua.htm">
|
|
<LINK REL=UP HREF="c_evalua.htm">
|
|
<LINK REL=NEXT HREF="m_lambda.htm">
|
|
</HEAD>
|
|
<BODY>
|
|
<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="c_evalua.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="c_evalua.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="m_lambda.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
|
|
|
|
<HR>
|
|
|
|
<A NAME="lambda"><I>Symbol</I> <B>LAMBDA</B></A> <P>
|
|
<P>
|
|
<P><B>Syntax:</B><P>
|
|
<P>
|
|
|
|
<B>lambda</B> <I>lambda-list [[<I>declaration</I><B>*</B> | <I>documentation</I>]] <I>form</I><B>*</B></I><P>
|
|
<P>
|
|
<P><B>Arguments:</B><P>
|
|
<P>
|
|
<I>lambda-list</I>---an <A REL=DEFINITION HREF="26_glo_o.htm#ordinary_lambda_list"><I>ordinary lambda list</I></A>. <P>
|
|
<I>declaration</I>---a <A REL=DEFINITION HREF="s_declar.htm#declare"><B>declare</B></A> <A REL=DEFINITION HREF="26_glo_e.htm#expression"><I>expression</I></A>; not evaluated. <P>
|
|
<I>documentation</I>---a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>; not evaluated. <P>
|
|
<I>form</I>---a <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A>. <P>
|
|
<P><B>Description:</B><P>
|
|
<P>
|
|
A <A REL=DEFINITION HREF="26_glo_l.htm#lambda_expression"><I>lambda expression</I></A> is a <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> that can be used in place of a <A REL=DEFINITION HREF="26_glo_f.htm#function_name"><I>function name</I></A> in certain contexts to denote a <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A> by directly describing its behavior rather than indirectly by referring to the name of an <I>established</I> <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A>. <P>
|
|
<I>Documentation</I> is attached to the denoted <I>function</I> (if any is actually created) as a <A REL=DEFINITION HREF="26_glo_d.htm#documentation_string"><I>documentation string</I></A>. <P>
|
|
<P><B>See Also:</B><P>
|
|
<P>
|
|
<A REL=DEFINITION HREF="s_fn.htm#function"><B>function</B></A>, <A REL=DEFINITION HREF="f_docume.htm#documentation"><B>documentation</B></A>, <A REL=CHILD HREF="03_ac.htm">Section 3.1.3 (Lambda Expressions)</A>, <A REL=CHILD HREF="03_ababd.htm">Section 3.1.2.1.2.4 (Lambda Forms)</A>, <A REL=CHILD HREF="03_dk.htm">Section 3.4.11 (Syntactic Interaction of Documentation Strings and Declarations)</A> <P>
|
|
<P><B>Notes:</B><P>
|
|
<P>
|
|
The <A REL=DEFINITION HREF="26_glo_l.htm#lambda_form"><I>lambda form</I></A> <P>
|
|
<PRE>
|
|
((lambda lambda-list . body) . arguments)
|
|
</PRE>
|
|
</TT> <P>
|
|
is semantically equivalent to the <A REL=DEFINITION HREF="26_glo_f.htm#function_form"><I>function form</I></A> <P>
|
|
<PRE>
|
|
(funcall #'(lambda lambda-list . body) . arguments)
|
|
</PRE>
|
|
</TT> <P>
|
|
<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/iss097.htm">DECLS-AND-DOC</A><P></UL><HR>
|
|
|
|
<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>
|
|
|
|
<A REL=COPYRIGHT HREF="../Front/Help.htm#Legal"><I>Copyright 1996-2005, LispWorks Ltd. All rights reserved.</I></A><P>
|
|
</BODY>
|
|
</HTML>
|