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252 lines
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<!DOCTYPE HTML>
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>multiple-value-call | 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="5_Data_and_Control_Flow.html"
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>5. Data and Control Flow</A
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> <SPAN CLASS="breadcrumb-item"
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>→ <A HREF="5_3_Data_and_Control_Flow_Dictionary.html"
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>5.3 Data and Control Flow Dictionary</A
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><A HREF="f_multiple-value-bind.html" CLASS="prev"
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>←</A
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>Apropos </SPAN
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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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><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="multiple-value-call"
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></SPAN
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><B
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>multiple-value-call</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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>Special</I
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> <I
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>Operator</I
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></TD
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></TR
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></TABLE
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><UL CLASS="subtoc"
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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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>multiple-value-call</B
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> <VAR CLASS="param"
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>function-form</VAR
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> <VAR CLASS="param"
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>form</VAR
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>* <SPAN CLASS="arrow"
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>→</SPAN
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> {<VAR CLASS="param"
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>result</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 and Values</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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>function-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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>; evaluated to produce <VAR CLASS="param"
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>function</VAR
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>. </P
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><P CLASS="j"
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><VAR CLASS="param"
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>function</VAR
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> — a <A HREF="26_1_Glossary.html#function_designator"
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><EM CLASS="term"
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>function designator</EM
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></A
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> resulting from the evaluation of <VAR CLASS="param"
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>function-form</VAR
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>. </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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><P CLASS="j"
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><VAR CLASS="param"
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>results</VAR
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> — the <A HREF="26_1_Glossary.html#value"
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><EM CLASS="term"
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>values</EM
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></A
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> returned by the <VAR CLASS="param"
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>function</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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>Description</B
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></DT
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><DD
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><P CLASS="j"
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>Applies <VAR CLASS="param"
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>function</VAR
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> to 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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> of the <A HREF="26_1_Glossary.html#object"
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><EM CLASS="term"
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>objects</EM
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></A
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> collected from groups of <A HREF="26_1_Glossary.html#multiple_values"
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><EM CLASS="term"
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>multiple values</EM
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></A
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><SPAN CLASS="meaning"
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><SUB CLASS="sub"
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><SPAN CLASS="cmr"
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>2</SPAN
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></SUB
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></SPAN
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>. </P
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><P CLASS="j"
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><A HREF="f_multiple-value-call.html" CLASS="specref"
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><B
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>multiple-value-call</B
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></A
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> first evaluates the <VAR CLASS="param"
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>function-form</VAR
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> to obtain <VAR CLASS="param"
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>function</VAR
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>, and then evaluates each <VAR CLASS="param"
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>form</VAR
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>. All the values of each <VAR CLASS="param"
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>form</VAR
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> are gathered together (not just one value from each) and given as arguments to the <VAR CLASS="param"
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>function</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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>Examples</B
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></DT
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><DD
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><PRE CLASS="screen"
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> (multiple-value-call #'list 1 '/ (values 2 3) '/ (values) '/ (floor 2.5))
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<SPAN CLASS="cmsy"
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><SPAN CLASS="arrow"
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>→</SPAN
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></SPAN
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> (1 / 2 3 / / 2 0.5)
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(+ (floor 5 3) (floor 19 4)) <SPAN CLASS="cmsy"
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><SPAN STYLE="font-size:16px;vertical-align:-2px"
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>≡</SPAN
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></SPAN
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> (+ 1 4)
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<SPAN CLASS="cmsy"
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><SPAN CLASS="arrow"
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>→</SPAN
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></SPAN
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> 5
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(multiple-value-call #'+ (floor 5 3) (floor 19 4)) <SPAN CLASS="cmsy"
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><SPAN STYLE="font-size:16px;vertical-align:-2px"
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>≡</SPAN
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></SPAN
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> (+ 1 2 4 3)
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<SPAN CLASS="cmsy"
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><SPAN CLASS="arrow"
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>→</SPAN
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></SPAN
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> 10</PRE
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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_multiple-value-list.html" CLASS="macref"
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><B
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>multiple-value-list</B
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></A
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>, <A HREF="f_multiple-value-bind.html" CLASS="macref"
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><B
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>multiple-value-bind</B
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></A
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></P
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></DD
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></DL
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></DIV
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>Conversion to HTML copyright 2023 by Gilbert Baumann</DIV
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