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>lambda | Common Lisp Nova Spec</TITLE
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>Common Lisp Nova Spec</A
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> <SPAN CLASS="breadcrumb-item"
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>→ <A HREF="3_Evaluation_and_Compilation.html"
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>3. Evaluation and Compilation</A
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>→ <A HREF="3_8_Evaluation_and_Compilation_Dictionary.html"
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>lambda</A
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><DIV CLASS="apropos-io"
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><A HREF="3_8_Evaluation_and_Compilation_Dictionary.html" CLASS="prev"
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><INPUT ID="apropos" AUTOFOCUS="AUTOFOCUS" PLACEHOLDER="Type here to search" ONINPUT="aproposInput(this);" ONKEYUP="aproposKeyup(event);" ONCHANGE="aproposChange(this);" ONFOCUS="aproposFocus(this);" ONFOCUSOUT="aproposFocusout(this);"
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><DIV CLASS="matter"
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><DIV CLASS="com"
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><DIV CLASS="begincom"
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><HR
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><TABLE WIDTH="100%" CELLSPACING="0" CELLPADDING="0"
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><TR
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><TD ALIGN="LEFT" VALIGN="BASELINE" WIDTH="100%" CLASS="name"
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><SPAN CLASS="idx" DATA-KIND="idxref" DATA-TERM="lambda"
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></SPAN
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><B
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>lambda</B
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></TD
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><TD ALIGN="RIGHT" VALIGN="BASELINE" WIDTH="0" NOWRAP="NOWRAP" CLASS="ftype"
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><I
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>Symbol</I
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></TD
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></TR
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></TABLE
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><HR
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></DIV
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><UL CLASS="subtoc"
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></UL
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><DL
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><DT
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><B
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>Syntax</B
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></DT
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><DD
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><P CLASS="j"
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><B
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>lambda</B
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> <SPAN CLASS="cmssi"
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>lambda-list</SPAN
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> ⟦ {<VAR CLASS="param"
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>declaration</VAR
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>}* | <VAR CLASS="param"
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>documentation</VAR
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>  ⟧ {<VAR CLASS="param"
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>form</VAR
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>}*</P
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></DD
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><DT
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><B
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>Arguments</B
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></DT
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><DD
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><P CLASS="j"
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><VAR CLASS="param"
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>lambda-list</VAR
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> — an <A HREF="26_1_Glossary.html#ordinary_lambda_list"
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><EM CLASS="term"
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>ordinary lambda list</EM
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></A
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>. </P
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><P CLASS="j"
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><VAR CLASS="param"
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>declaration</VAR
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> — a <A HREF="m_declare.html" CLASS="misc"
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><B
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>declare</B
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></A
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> <A HREF="26_1_Glossary.html#expression"
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><EM CLASS="term"
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>expression</EM
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></A
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>; not evaluated. </P
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><P CLASS="j"
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><VAR CLASS="param"
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>documentation</VAR
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> — a <A HREF="26_1_Glossary.html#string"
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><EM CLASS="term"
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>string</EM
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></A
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>; not evaluated. </P
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><P CLASS="j"
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><VAR CLASS="param"
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>form</VAR
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> — a <A HREF="26_1_Glossary.html#form"
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><EM CLASS="term"
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>form</EM
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></A
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>.</P
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></DD
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><DT
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><B
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>Description</B
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></DT
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><DD
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><P CLASS="j"
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>A <A HREF="26_1_Glossary.html#lambda_expression"
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><EM CLASS="term"
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>lambda expression</EM
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></A
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> is a <A HREF="26_1_Glossary.html#list"
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><EM CLASS="term"
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>list</EM
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></A
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> that can be used in place of a <A HREF="26_1_Glossary.html#function_name"
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><EM CLASS="term"
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>function name</EM
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></A
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> in certain contexts to denote a <A HREF="26_1_Glossary.html#function"
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><EM CLASS="term"
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>function</EM
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></A
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> by directly describing its behavior rather than indirectly by referring to the name of an <A HREF="26_1_Glossary.html#establish"
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><EM CLASS="term"
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>established</EM
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></A
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> <A HREF="26_1_Glossary.html#function"
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><EM CLASS="term"
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>function</EM
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></A
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>. </P
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><P CLASS="j"
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><VAR CLASS="param"
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>Documentation</VAR
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> is attached to the denoted <VAR CLASS="param"
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>function</VAR
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> (if any is actually created) as a <A HREF="26_1_Glossary.html#documentation_string"
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><EM CLASS="term"
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>documentation string</EM
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></A
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>.</P
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></DD
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><DT
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><B
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>See Also</B
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></DT
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><DD
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><P CLASS="j"
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><A HREF="f_function.html" CLASS="specref"
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><B
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>function</B
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></A
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>, <A HREF="f_documentation.html" CLASS="funref"
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><B
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>documentation</B
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></A
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>, <A HREF="3_1_Evaluation.html#sec_3_1_3" CLASS="secref"
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><SPAN CLASS="cmr"
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>Section</SPAN
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> <SPAN CLASS="cmr"
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>3.1.3</SPAN
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> <SPAN CLASS="cmr"
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>(Lambda</SPAN
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> <SPAN CLASS="cmr"
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>Expressions)</SPAN
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></A
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>, <A HREF="3_1_Evaluation.html#sec_3_1_2_1_2_4" CLASS="secref"
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><SPAN CLASS="cmr"
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>Section</SPAN
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> <SPAN CLASS="cmr"
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>3.1.2.1.2.4</SPAN
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> <SPAN CLASS="cmr"
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>(Lambda</SPAN
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> <SPAN CLASS="cmr"
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>Forms)</SPAN
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></A
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>, <A HREF="3_4_Lambda_Lists.html#sec_3_4_11" CLASS="secref"
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><SPAN CLASS="cmr"
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>Section</SPAN
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> <SPAN CLASS="cmr"
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>3.4.11</SPAN
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> <SPAN CLASS="cmr"
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>(Syntactic</SPAN
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> <SPAN CLASS="cmr"
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>Interaction</SPAN
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> <SPAN CLASS="cmr"
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>of</SPAN
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> <SPAN CLASS="cmr"
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>Documentation</SPAN
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> <SPAN CLASS="cmr"
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>Strings</SPAN
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> <SPAN CLASS="cmr"
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>and</SPAN
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> <SPAN CLASS="cmr"
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>Declarations)</SPAN
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></A
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></P
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></DD
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><DT
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><B
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>Notes</B
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></DT
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><DD
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><P CLASS="j"
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>The <A HREF="26_1_Glossary.html#lambda_form"
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><EM CLASS="term"
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>lambda form</EM
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></A
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></P
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><PRE CLASS="screen"
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>((lambda <VAR CLASS="param"
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>lambda-list</VAR
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> . <VAR CLASS="param"
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>body</VAR
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>) . <VAR CLASS="param"
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>arguments</VAR
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>)</PRE
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><P CLASS="j"
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>is semantically equivalent to the <A HREF="26_1_Glossary.html#function_form"
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><EM CLASS="term"
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>function form</EM
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></A
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></P
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><PRE CLASS="screen"
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>(funcall #'(lambda <VAR CLASS="param"
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>lambda-list</VAR
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> . <VAR CLASS="param"
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>body</VAR
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>) . <VAR CLASS="param"
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>arguments</VAR
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>)</PRE
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></DD
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></DL
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></DIV
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></DIV
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><DIV CLASS="footer"
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>Conversion to HTML copyright 2023 by Gilbert Baumann</DIV
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