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<!-- Common Lisp HyperSpec (TM), version 7.0 generated by Kent M. Pitman on Mon, 11-Apr-2005 2:31am EDT -->
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<TITLE>CLHS: Section 3.4</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_cda.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="03_.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="03_da.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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3.4 Lambda Lists</H2> <P>
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A <A REL=DEFINITION HREF="26_glo_l.htm#lambda_list"><I>lambda list</I></A> is a <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> that specifies a set of <A REL=DEFINITION HREF="26_glo_p.htm#parameter"><I>parameters</I></A> (sometimes called <A REL=DEFINITION HREF="26_glo_l.htm#lambda_variable"><I>lambda variables</I></A>) and a protocol for receiving <A REL=DEFINITION HREF="26_glo_v.htm#value"><I>values</I></A> for those <A REL=DEFINITION HREF="26_glo_p.htm#parameter"><I>parameters</I></A>. <P>
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There are several kinds of <A REL=DEFINITION HREF="26_glo_l.htm#lambda_list"><I>lambda lists</I></A>. <P>
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<PRE>
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Context Kind of Lambda List
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<A REL=DEFINITION HREF="m_defun.htm#defun">defun</A> <A REL=DEFINITION HREF="26_glo_f.htm#form">form</A> <A REL=DEFINITION HREF="26_glo_o.htm#ordinary_lambda_list">ordinary lambda list</A>
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<A REL=DEFINITION HREF="m_defmac.htm#defmacro">defmacro</A> <A REL=DEFINITION HREF="26_glo_f.htm#form">form</A> <A REL=DEFINITION HREF="26_glo_m.htm#macro_lambda_list">macro lambda list</A>
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<A REL=DEFINITION HREF="26_glo_l.htm#lambda_expression">lambda expression</A> <A REL=DEFINITION HREF="26_glo_o.htm#ordinary_lambda_list">ordinary lambda list</A>
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<A REL=DEFINITION HREF="s_flet_.htm#flet">flet</A> local <A REL=DEFINITION HREF="26_glo_f.htm#function">function</A> definition <A REL=DEFINITION HREF="26_glo_o.htm#ordinary_lambda_list">ordinary lambda list</A>
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<A REL=DEFINITION HREF="s_flet_.htm#labels">labels</A> local <A REL=DEFINITION HREF="26_glo_f.htm#function">function</A> definition <A REL=DEFINITION HREF="26_glo_o.htm#ordinary_lambda_list">ordinary lambda list</A>
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<A REL=DEFINITION HREF="m_hand_1.htm#handler-case">handler-case</A> clause specification <A REL=DEFINITION HREF="26_glo_o.htm#ordinary_lambda_list">ordinary lambda list</A>
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<A REL=DEFINITION HREF="m_rst_ca.htm#restart-case">restart-case</A> clause specification <A REL=DEFINITION HREF="26_glo_o.htm#ordinary_lambda_list">ordinary lambda list</A>
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<A REL=DEFINITION HREF="s_flet_.htm#macrolet">macrolet</A> local <A REL=DEFINITION HREF="26_glo_m.htm#macro">macro</A> definition <A REL=DEFINITION HREF="26_glo_m.htm#macro_lambda_list">macro lambda list</A>
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<A REL=DEFINITION HREF="m_defi_4.htm#define-method-combination">define-method-combination</A> <A REL=DEFINITION HREF="26_glo_o.htm#ordinary_lambda_list">ordinary lambda list</A>
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<A REL=DEFINITION HREF="m_defi_4.htm#define-method-combination">define-method-combination</A> :arguments option <A REL=DEFINITION HREF="26_glo_d.htm#define-method-combination_arguments_lambda_list">define-method-combination arguments lambda list</A>
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<A REL=DEFINITION HREF="m_defstr.htm#defstruct">defstruct</A> :constructor option <A REL=DEFINITION HREF="26_glo_b.htm#boa_lambda_list">boa lambda list</A>
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<A REL=DEFINITION HREF="m_defgen.htm#defgeneric">defgeneric</A> <A REL=DEFINITION HREF="26_glo_f.htm#form">form</A> <A REL=DEFINITION HREF="26_glo_g.htm#generic_function_lambda_list">generic function lambda list</A>
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<A REL=DEFINITION HREF="m_defgen.htm#defgeneric">defgeneric</A> <A REL=DEFINITION HREF="26_glo_m.htm#method">method</A> clause <A REL=DEFINITION HREF="26_glo_s.htm#specialized_lambda_list">specialized lambda list</A>
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<A REL=DEFINITION HREF="m_defmet.htm#defmethod">defmethod</A> <A REL=DEFINITION HREF="26_glo_f.htm#form">form</A> <A REL=DEFINITION HREF="26_glo_s.htm#specialized_lambda_list">specialized lambda list</A>
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<A REL=DEFINITION HREF="m_defset.htm#defsetf">defsetf</A> <A REL=DEFINITION HREF="26_glo_f.htm#form">form</A> <A REL=DEFINITION HREF="26_glo_d.htm#defsetf_lambda_list">defsetf lambda list</A>
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<A REL=DEFINITION HREF="m_defi_3.htm#define-setf-expander">define-setf-expander</A> <A REL=DEFINITION HREF="26_glo_f.htm#form">form</A> <A REL=DEFINITION HREF="26_glo_m.htm#macro_lambda_list">macro lambda list</A>
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<A REL=DEFINITION HREF="m_deftp.htm#deftype">deftype</A> <A REL=DEFINITION HREF="26_glo_f.htm#form">form</A> <A REL=DEFINITION HREF="26_glo_d.htm#deftype_lambda_list">deftype lambda list</A>
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<A REL=DEFINITION HREF="m_destru.htm#destructuring-bind">destructuring-bind</A> <A REL=DEFINITION HREF="26_glo_f.htm#form">form</A> <A REL=DEFINITION HREF="26_glo_d.htm#destructuring_lambda_list">destructuring lambda list</A>
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<A REL=DEFINITION HREF="m_define.htm#define-compiler-macro">define-compiler-macro</A> <A REL=DEFINITION HREF="26_glo_f.htm#form">form</A> <A REL=DEFINITION HREF="26_glo_m.htm#macro_lambda_list">macro lambda list</A>
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<A REL=DEFINITION HREF="m_defi_2.htm#define-modify-macro">define-modify-macro</A> <A REL=DEFINITION HREF="26_glo_f.htm#form">form</A> <A REL=DEFINITION HREF="26_glo_d.htm#define-modify-macro_lambda_list">define-modify-macro lambda list</A>
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</PRE>
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<P><B>Figure 3-10. What Kind of Lambda Lists to Use</B> <P>
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The next figure lists some <A REL=DEFINITION HREF="26_glo_d.htm#defined_name"><I>defined names</I></A> that are applicable to <A REL=DEFINITION HREF="26_glo_l.htm#lambda_list"><I>lambda lists</I></A>. <P>
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<PRE>
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<A REL=DEFINITION HREF="v_lambda.htm#lambda-list-keywords">lambda-list-keywords</A> <A REL=DEFINITION HREF="v_lamb_1.htm#lambda-parameters-limit">lambda-parameters-limit</A>
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</PRE>
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<P><B>Figure 3-11. Defined names applicable to lambda lists</B> <P>
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<A REL=CHILD HREF="03_da.htm"><H2>
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3.4.1 Ordinary Lambda Lists</H2></A><P>
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<A REL=CHILD HREF="03_db.htm"><H2>
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3.4.2 Generic Function Lambda Lists</H2></A><P>
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<A REL=CHILD HREF="03_dc.htm"><H2>
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3.4.3 Specialized Lambda Lists</H2></A><P>
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<A REL=CHILD HREF="03_dd.htm"><H2>
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3.4.4 Macro Lambda Lists</H2></A><P><P>
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<A REL=CHILD HREF="03_de.htm"><H2>
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3.4.5 Destructuring Lambda Lists</H2></A><P><P>
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<A REL=CHILD HREF="03_df.htm"><H2>
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3.4.6 Boa Lambda Lists</H2></A><P>
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<A REL=CHILD HREF="03_dg.htm"><H2>
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3.4.7 Defsetf Lambda Lists</H2></A><P>
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<A REL=CHILD HREF="03_dh.htm"><H2>
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3.4.8 Deftype Lambda Lists</H2></A><P><P>
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<A REL=CHILD HREF="03_di.htm"><H2>
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3.4.9 Define-modify-macro Lambda Lists</H2></A><P>
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<A REL=CHILD HREF="03_dj.htm"><H2>
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3.4.10 Define-method-combination Arguments Lambda Lists</H2></A><P>
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<A REL=CHILD HREF="03_dk.htm"><H2>
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3.4.11 Syntactic Interaction of Documentation Strings and Declarations</H2></A><P><HR>
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