330 lines
6.7 KiB
HTML
330 lines
6.7 KiB
HTML
|
<!DOCTYPE HTML>
|
||
|
|
<HTML LANG="en-us"
|
||
|
|
><HEAD
|
||
|
|
><TITLE
|
||
|
|
>funcall | Common Lisp Nova Spec</TITLE
|
||
|
|
><META CHARSET="US-ASCII"
|
||
|
|
><LINK REL="canonical" HREF="f_funcall.html"
|
||
|
|
><LINK REL="next" HREF="f_function.html" TYPE="text/html" TITLE="function"
|
||
|
|
><LINK REL="prev" HREF="f_flet.html" TYPE="text/html" TITLE="flet, labels, macrolet"
|
||
|
|
><LINK REL="up" HREF="5_3_Data_and_Control_Flow_Dictionary.html" TYPE="text/html" TITLE="5.3 Data and Control Flow Dictionary"
|
||
|
|
><LINK REL="start" HREF="index.html" TYPE="text/html" TITLE="Common Lisp Nova Spec"
|
||
|
|
><META NAME="VIEWPORT" CONTENT="width=device-width, initial-scale=1.0"
|
||
|
|
><LINK REL="STYLESHEET" HREF="dpans.css%3F3909942064.css"
|
||
|
|
><SCRIPT SRC="dpans.js%3F3909942064"
|
||
|
|
></SCRIPT
|
||
|
|
><SCRIPT SRC="apropos.js%3F3909942064"
|
||
|
|
></SCRIPT
|
||
|
|
></HEAD
|
||
|
|
><BODY
|
||
|
|
><DIV
|
||
|
|
><DIV CLASS="topnav"
|
||
|
|
><DIV CLASS="breadcrumb"
|
||
|
|
><SPAN CLASS="breadcrumb-item"
|
||
|
|
><A HREF="index.html"
|
||
|
|
>Common Lisp Nova Spec</A
|
||
|
|
></SPAN
|
||
|
|
> <SPAN CLASS="breadcrumb-item"
|
||
|
|
>→ <A HREF="5_Data_and_Control_Flow.html"
|
||
|
|
>5. Data and Control Flow</A
|
||
|
|
></SPAN
|
||
|
|
> <SPAN CLASS="breadcrumb-item"
|
||
|
|
>→ <A HREF="5_3_Data_and_Control_Flow_Dictionary.html"
|
||
|
|
>5.3 Data and Control Flow Dictionary</A
|
||
|
|
></SPAN
|
||
|
|
> <SPAN CLASS="breadcrumb-item"
|
||
|
|
>→ <A HREF="f_funcall.html"
|
||
|
|
>funcall</A
|
||
|
|
></SPAN
|
||
|
|
></DIV
|
||
|
|
><DIV CLASS="apropos"
|
||
|
|
><DIV CLASS="apropos-io"
|
||
|
|
><A HREF="f_flet.html" CLASS="prev"
|
||
|
|
>←</A
|
||
|
|
><SPAN ID="apropos-label"
|
||
|
|
>Apropos </SPAN
|
||
|
|
><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);"
|
||
|
|
><A HREF="f_function.html" CLASS="next"
|
||
|
|
>→</A
|
||
|
|
></DIV
|
||
|
|
><DIV ID="apropos-res"
|
||
|
|
></DIV
|
||
|
|
></DIV
|
||
|
|
></DIV
|
||
|
|
><DIV CLASS="matter"
|
||
|
|
><DIV CLASS="com"
|
||
|
|
><DIV CLASS="begincom"
|
||
|
|
><HR
|
||
|
|
><TABLE WIDTH="100%" CELLSPACING="0" CELLPADDING="0"
|
||
|
|
><TR
|
||
|
|
><TD ALIGN="LEFT" VALIGN="BASELINE" WIDTH="100%" CLASS="name"
|
||
|
|
><SPAN CLASS="idx" DATA-KIND="idxref" DATA-TERM="funcall"
|
||
|
|
></SPAN
|
||
|
|
><B
|
||
|
|
>funcall</B
|
||
|
|
></TD
|
||
|
|
><TD ALIGN="RIGHT" VALIGN="BASELINE" WIDTH="0" NOWRAP="NOWRAP" CLASS="ftype"
|
||
|
|
><I
|
||
|
|
>Function</I
|
||
|
|
></TD
|
||
|
|
></TR
|
||
|
|
></TABLE
|
||
|
|
><HR
|
||
|
|
></DIV
|
||
|
|
><UL CLASS="subtoc"
|
||
|
|
></UL
|
||
|
|
><DL
|
||
|
|
><DT
|
||
|
|
><B
|
||
|
|
>Syntax</B
|
||
|
|
></DT
|
||
|
|
><DD
|
||
|
|
><P CLASS="j"
|
||
|
|
><B
|
||
|
|
>funcall</B
|
||
|
|
> <SPAN CLASS="cmssi"
|
||
|
|
>function</SPAN
|
||
|
|
> <SPAN CLASS="cmtt"
|
||
|
|
>&rest</SPAN
|
||
|
|
> <SPAN CLASS="cmssi"
|
||
|
|
>args</SPAN
|
||
|
|
> <SPAN CLASS="arrow"
|
||
|
|
>→</SPAN
|
||
|
|
> {<VAR CLASS="param"
|
||
|
|
>result</VAR
|
||
|
|
>}*</P
|
||
|
|
></DD
|
||
|
|
><DT
|
||
|
|
><B
|
||
|
|
>Arguments and Values</B
|
||
|
|
></DT
|
||
|
|
><DD
|
||
|
|
><P CLASS="j"
|
||
|
|
><VAR CLASS="param"
|
||
|
|
>function</VAR
|
||
|
|
> — a <A HREF="26_1_Glossary.html#function_designator"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>function designator</EM
|
||
|
|
></A
|
||
|
|
>. </P
|
||
|
|
><P CLASS="j"
|
||
|
|
><VAR CLASS="param"
|
||
|
|
>args</VAR
|
||
|
|
> — <A HREF="26_1_Glossary.html#argument"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>arguments</EM
|
||
|
|
></A
|
||
|
|
> to the <VAR CLASS="param"
|
||
|
|
>function</VAR
|
||
|
|
>. </P
|
||
|
|
><P CLASS="j"
|
||
|
|
><VAR CLASS="param"
|
||
|
|
>results</VAR
|
||
|
|
> — the <A HREF="26_1_Glossary.html#value"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>values</EM
|
||
|
|
></A
|
||
|
|
> returned by the <VAR CLASS="param"
|
||
|
|
>function</VAR
|
||
|
|
>.</P
|
||
|
|
></DD
|
||
|
|
><DT
|
||
|
|
><B
|
||
|
|
>Description</B
|
||
|
|
></DT
|
||
|
|
><DD
|
||
|
|
><P CLASS="j"
|
||
|
|
><A HREF="f_funcall.html" CLASS="funref"
|
||
|
|
><B
|
||
|
|
>funcall</B
|
||
|
|
></A
|
||
|
|
> applies <VAR CLASS="param"
|
||
|
|
>function</VAR
|
||
|
|
> to <VAR CLASS="param"
|
||
|
|
>args</VAR
|
||
|
|
>. If <VAR CLASS="param"
|
||
|
|
>function</VAR
|
||
|
|
> is a <A HREF="26_1_Glossary.html#symbol"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>symbol</EM
|
||
|
|
></A
|
||
|
|
>, it is coerced to a <A HREF="26_1_Glossary.html#function"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>function</EM
|
||
|
|
></A
|
||
|
|
> as if by finding its <A HREF="26_1_Glossary.html#functional_value"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>functional value</EM
|
||
|
|
></A
|
||
|
|
> in the <A HREF="26_1_Glossary.html#global_environment"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>global environment</EM
|
||
|
|
></A
|
||
|
|
>.</P
|
||
|
|
></DD
|
||
|
|
><DT
|
||
|
|
><B
|
||
|
|
>Examples</B
|
||
|
|
></DT
|
||
|
|
><DD
|
||
|
|
><PRE CLASS="screen"
|
||
|
|
> (funcall #'+ 1 2 3) <SPAN CLASS="cmsy"
|
||
|
|
><SPAN CLASS="arrow"
|
||
|
|
>→</SPAN
|
||
|
|
></SPAN
|
||
|
|
> 6
|
||
|
|
(funcall 'car '(1 2 3)) <SPAN CLASS="cmsy"
|
||
|
|
><SPAN CLASS="arrow"
|
||
|
|
>→</SPAN
|
||
|
|
></SPAN
|
||
|
|
> 1
|
||
|
|
(funcall 'position 1 '(1 2 3 2 1) :start 1) <SPAN CLASS="cmsy"
|
||
|
|
><SPAN CLASS="arrow"
|
||
|
|
>→</SPAN
|
||
|
|
></SPAN
|
||
|
|
> 4
|
||
|
|
(cons 1 2) <SPAN CLASS="cmsy"
|
||
|
|
><SPAN CLASS="arrow"
|
||
|
|
>→</SPAN
|
||
|
|
></SPAN
|
||
|
|
> (1 . 2)
|
||
|
|
(flet ((cons (x y) `(kons ,x ,y)))
|
||
|
|
(let ((cons (symbol-function '+)))
|
||
|
|
(funcall #'cons
|
||
|
|
(funcall 'cons 1 2)
|
||
|
|
(funcall cons 1 2))))
|
||
|
|
<SPAN CLASS="cmsy"
|
||
|
|
><SPAN CLASS="arrow"
|
||
|
|
>→</SPAN
|
||
|
|
></SPAN
|
||
|
|
> (KONS (1 . 2) 3)</PRE
|
||
|
|
></DD
|
||
|
|
><DT
|
||
|
|
><B
|
||
|
|
>Exceptional Situations</B
|
||
|
|
></DT
|
||
|
|
><DD
|
||
|
|
><P CLASS="j"
|
||
|
|
>An error of <A HREF="26_1_Glossary.html#type"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>type</EM
|
||
|
|
></A
|
||
|
|
> <A HREF="t_undefined-function.html" CLASS="typeref"
|
||
|
|
><B
|
||
|
|
>undefined-function</B
|
||
|
|
></A
|
||
|
|
> should be signaled if <VAR CLASS="param"
|
||
|
|
>function</VAR
|
||
|
|
> is a <A HREF="26_1_Glossary.html#symbol"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>symbol</EM
|
||
|
|
></A
|
||
|
|
> that does not have a global definition as a <A HREF="26_1_Glossary.html#function"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>function</EM
|
||
|
|
></A
|
||
|
|
> or that has a global definition as a <A HREF="26_1_Glossary.html#macro"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>macro</EM
|
||
|
|
></A
|
||
|
|
> or a <A HREF="26_1_Glossary.html#special_operator"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>special operator</EM
|
||
|
|
></A
|
||
|
|
>.</P
|
||
|
|
></DD
|
||
|
|
><DT
|
||
|
|
><B
|
||
|
|
>See Also</B
|
||
|
|
></DT
|
||
|
|
><DD
|
||
|
|
><P CLASS="j"
|
||
|
|
><A HREF="f_apply.html" CLASS="funref"
|
||
|
|
><B
|
||
|
|
>apply</B
|
||
|
|
></A
|
||
|
|
>, <A HREF="f_function.html" CLASS="specref"
|
||
|
|
><B
|
||
|
|
>function</B
|
||
|
|
></A
|
||
|
|
>, <A HREF="3_1_Evaluation.html#sec_3_1" CLASS="secref"
|
||
|
|
><SPAN CLASS="cmr"
|
||
|
|
>Section</SPAN
|
||
|
|
> <SPAN CLASS="cmr"
|
||
|
|
>3.1</SPAN
|
||
|
|
> <SPAN CLASS="cmr"
|
||
|
|
>(Evaluation)</SPAN
|
||
|
|
></A
|
||
|
|
></P
|
||
|
|
></DD
|
||
|
|
><DT
|
||
|
|
><B
|
||
|
|
>Notes</B
|
||
|
|
></DT
|
||
|
|
><DD
|
||
|
|
><PRE CLASS="screen"
|
||
|
|
>(funcall <VAR CLASS="param"
|
||
|
|
>function</VAR
|
||
|
|
> <VAR CLASS="param"
|
||
|
|
>arg1</VAR
|
||
|
|
> <VAR CLASS="param"
|
||
|
|
>arg2</VAR
|
||
|
|
> ...)
|
||
|
|
<SPAN CLASS="cmsy"
|
||
|
|
><SPAN STYLE="font-size:16px;vertical-align:-2px"
|
||
|
|
>≡</SPAN
|
||
|
|
></SPAN
|
||
|
|
> (apply <VAR CLASS="param"
|
||
|
|
>function</VAR
|
||
|
|
> <VAR CLASS="param"
|
||
|
|
>arg1</VAR
|
||
|
|
> <VAR CLASS="param"
|
||
|
|
>arg2</VAR
|
||
|
|
> ... nil)
|
||
|
|
<SPAN CLASS="cmsy"
|
||
|
|
><SPAN STYLE="font-size:16px;vertical-align:-2px"
|
||
|
|
>≡</SPAN
|
||
|
|
></SPAN
|
||
|
|
> (apply <VAR CLASS="param"
|
||
|
|
>function</VAR
|
||
|
|
> (list <VAR CLASS="param"
|
||
|
|
>arg1</VAR
|
||
|
|
> <VAR CLASS="param"
|
||
|
|
>arg2</VAR
|
||
|
|
> ...))</PRE
|
||
|
|
><P CLASS="j"
|
||
|
|
>The difference between <A HREF="f_funcall.html" CLASS="funref"
|
||
|
|
><B
|
||
|
|
>funcall</B
|
||
|
|
></A
|
||
|
|
> and an ordinary function call is that in the former case the <VAR CLASS="param"
|
||
|
|
>function</VAR
|
||
|
|
> is obtained by ordinary <A HREF="26_1_Glossary.html#evaluation"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>evaluation</EM
|
||
|
|
></A
|
||
|
|
> of a <A HREF="26_1_Glossary.html#form"
|
||
|
|
><EM CLASS="term"
|
||
|
|
>form</EM
|
||
|
|
></A
|
||
|
|
>, and in the latter case it is obtained by the special interpretation of the function position that normally occurs.</P
|
||
|
|
></DD
|
||
|
|
></DL
|
||
|
|
></DIV
|
||
|
|
></DIV
|
||
|
|
><DIV CLASS="footer"
|
||
|
|
><DIV CLASS="btmnav"
|
||
|
|
><A HREF="f_flet.html" CLASS="prev"
|
||
|
|
>←</A
|
||
|
|
><A HREF="f_function.html" CLASS="next"
|
||
|
|
>→</A
|
||
|
|
></DIV
|
||
|
|
><DIV CLASS="trail"
|
||
|
|
>Conversion to HTML copyright 2023 by Gilbert Baumann</DIV
|
||
|
|
></DIV
|
||
|
|
></DIV
|
||
|
|
><SCRIPT
|
||
|
|
>domReady();</SCRIPT
|
||
|
|
></BODY
|
||
|
|
></HTML
|
||
|
|
>
|