321 lines
No EOL
6 KiB
HTML
321 lines
No EOL
6 KiB
HTML
<!DOCTYPE HTML>
|
|
<HTML LANG="en-us"
|
|
><HEAD
|
|
><TITLE
|
|
>cons | Common Lisp Nova Spec</TITLE
|
|
><META CHARSET="US-ASCII"
|
|
><LINK REL="canonical" HREF="t_cons.html"
|
|
><LINK REL="next" HREF="t_atom.html" TYPE="text/html" TITLE="atom"
|
|
><LINK REL="prev" HREF="t_null.html" TYPE="text/html" TITLE="null"
|
|
><LINK REL="up" HREF="14_2_Conses_Dictionary.html" TYPE="text/html" TITLE="14.2 Conses 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="14_Conses.html"
|
|
>14. Conses</A
|
|
></SPAN
|
|
> <SPAN CLASS="breadcrumb-item"
|
|
>→ <A HREF="14_2_Conses_Dictionary.html"
|
|
>14.2 Conses Dictionary</A
|
|
></SPAN
|
|
> <SPAN CLASS="breadcrumb-item"
|
|
>→ <A HREF="t_cons.html"
|
|
>cons</A
|
|
></SPAN
|
|
></DIV
|
|
><DIV CLASS="apropos"
|
|
><DIV CLASS="apropos-io"
|
|
><A HREF="t_null.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="t_atom.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="cons"
|
|
></SPAN
|
|
><B
|
|
>cons</B
|
|
></TD
|
|
><TD ALIGN="RIGHT" VALIGN="BASELINE" WIDTH="0" NOWRAP="NOWRAP" CLASS="ftype"
|
|
><I
|
|
>System</I
|
|
> <I
|
|
>Class</I
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
></DIV
|
|
><UL CLASS="subtoc"
|
|
></UL
|
|
><DL
|
|
><DT
|
|
><B
|
|
>Class Precedence List</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
><A HREF="t_cons.html" CLASS="typeref"
|
|
><B
|
|
>cons</B
|
|
></A
|
|
>, <A HREF="t_list.html" CLASS="typeref"
|
|
><B
|
|
>list</B
|
|
></A
|
|
>, <A HREF="t_sequence.html" CLASS="typeref"
|
|
><B
|
|
>sequence</B
|
|
></A
|
|
>, <A HREF="t_t.html" CLASS="typeref"
|
|
><B
|
|
>t</B
|
|
></A
|
|
></P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Description</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
>A <A HREF="26_1_Glossary.html#cons"
|
|
><EM CLASS="term"
|
|
>cons</EM
|
|
></A
|
|
> is a compound <A HREF="26_1_Glossary.html#object"
|
|
><EM CLASS="term"
|
|
>object</EM
|
|
></A
|
|
> having two components, called the <A HREF="26_1_Glossary.html#car"
|
|
><EM CLASS="term"
|
|
>car</EM
|
|
></A
|
|
> and <A HREF="26_1_Glossary.html#cdr"
|
|
><EM CLASS="term"
|
|
>cdr</EM
|
|
></A
|
|
>. These form a <A HREF="26_1_Glossary.html#dotted_pair"
|
|
><EM CLASS="term"
|
|
>dotted pair</EM
|
|
></A
|
|
>. Each component can be any <A HREF="26_1_Glossary.html#object"
|
|
><EM CLASS="term"
|
|
>object</EM
|
|
></A
|
|
>.</P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Compound Type Specifier Kind</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
>Specializing.</P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Compound Type Specifier Syntax</B
|
|
></DT
|
|
><DD
|
|
><TABLE CELLSPACING="0" CELLPADDING="0" RULES="GROUPS" STYLE="margin: 1ex 0"
|
|
><TBODY
|
|
><TR
|
|
><TD ALIGN="LEFT" VALIGN="BASELINE" STYLE=";"
|
|
><SPAN CLASS="cmtt"
|
|
>(cons</SPAN
|
|
> <SPAN CLASS="cmtt"
|
|
>[</SPAN
|
|
><SPAN CLASS="cmssi"
|
|
>car-typespec</SPAN
|
|
> <SPAN CLASS="cmr"
|
|
>[</SPAN
|
|
><SPAN CLASS="cmssi"
|
|
>cdr-typespec</SPAN
|
|
><SPAN CLASS="cmr"
|
|
>]</SPAN
|
|
><SPAN CLASS="cmtt"
|
|
>])</SPAN
|
|
></TD
|
|
></TR
|
|
></TBODY
|
|
></TABLE
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Compound Type Specifier Arguments</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
><VAR CLASS="param"
|
|
>car-typespec</VAR
|
|
> — a <A HREF="26_1_Glossary.html#type_specifier"
|
|
><EM CLASS="term"
|
|
>type specifier</EM
|
|
></A
|
|
>, or the <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbol</EM
|
|
></A
|
|
> <SPAN CLASS="misc"
|
|
><B
|
|
>*</B
|
|
></SPAN
|
|
>. The default is the <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbol</EM
|
|
></A
|
|
> <SPAN CLASS="misc"
|
|
><B
|
|
>*</B
|
|
></SPAN
|
|
>. </P
|
|
><P CLASS="j"
|
|
><VAR CLASS="param"
|
|
>cdr-typespec</VAR
|
|
> — a <A HREF="26_1_Glossary.html#type_specifier"
|
|
><EM CLASS="term"
|
|
>type specifier</EM
|
|
></A
|
|
>, or the <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbol</EM
|
|
></A
|
|
> <SPAN CLASS="misc"
|
|
><B
|
|
>*</B
|
|
></SPAN
|
|
>. The default is the <A HREF="26_1_Glossary.html#symbol"
|
|
><EM CLASS="term"
|
|
>symbol</EM
|
|
></A
|
|
> <SPAN CLASS="misc"
|
|
><B
|
|
>*</B
|
|
></SPAN
|
|
>.</P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>Compound Type Specifier Description</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
>This denotes the set of <A HREF="26_1_Glossary.html#cons"
|
|
><EM CLASS="term"
|
|
>conses</EM
|
|
></A
|
|
> whose <A HREF="26_1_Glossary.html#car"
|
|
><EM CLASS="term"
|
|
>car</EM
|
|
></A
|
|
> is constrained to be of <A HREF="26_1_Glossary.html#type"
|
|
><EM CLASS="term"
|
|
>type</EM
|
|
></A
|
|
> <VAR CLASS="param"
|
|
>car-typespec</VAR
|
|
> and whose <A HREF="26_1_Glossary.html#cdr"
|
|
><EM CLASS="term"
|
|
>cdr</EM
|
|
></A
|
|
> is constrained to be of <A HREF="26_1_Glossary.html#type"
|
|
><EM CLASS="term"
|
|
>type</EM
|
|
></A
|
|
> <VAR CLASS="param"
|
|
>cdr-typespec</VAR
|
|
>. (If either <VAR CLASS="param"
|
|
>car-typespec</VAR
|
|
> or <VAR CLASS="param"
|
|
>cdr-typespec</VAR
|
|
> is <SPAN CLASS="misc"
|
|
><B
|
|
>*</B
|
|
></SPAN
|
|
>, it is as if the <A HREF="26_1_Glossary.html#type"
|
|
><EM CLASS="term"
|
|
>type</EM
|
|
></A
|
|
> <A HREF="t_t.html" CLASS="typeref"
|
|
><B
|
|
>t</B
|
|
></A
|
|
> had been denoted.)</P
|
|
></DD
|
|
><DT
|
|
><B
|
|
>See Also</B
|
|
></DT
|
|
><DD
|
|
><P CLASS="j"
|
|
><A HREF="2_4_Standard_Macro_Characters.html#sec_2_4_1" CLASS="secref"
|
|
><SPAN CLASS="cmr"
|
|
>Section</SPAN
|
|
> <SPAN CLASS="cmr"
|
|
>2.4.1</SPAN
|
|
> <SPAN CLASS="cmr"
|
|
>(Left-Parenthesis)</SPAN
|
|
></A
|
|
>, <A HREF="22_1_The_Lisp_Printer.html#sec_22_1_3_5" CLASS="secref"
|
|
><SPAN CLASS="cmr"
|
|
>Section</SPAN
|
|
> <SPAN CLASS="cmr"
|
|
>22.1.3.5</SPAN
|
|
> <SPAN CLASS="cmr"
|
|
>(Printing</SPAN
|
|
> <SPAN CLASS="cmr"
|
|
>Lists</SPAN
|
|
> <SPAN CLASS="cmr"
|
|
>and</SPAN
|
|
> <SPAN CLASS="cmr"
|
|
>Conses)</SPAN
|
|
></A
|
|
></P
|
|
></DD
|
|
></DL
|
|
></DIV
|
|
></DIV
|
|
><DIV CLASS="footer"
|
|
><DIV CLASS="btmnav"
|
|
><A HREF="t_null.html" CLASS="prev"
|
|
>←</A
|
|
><A HREF="t_atom.html" CLASS="next"
|
|
>→</A
|
|
></DIV
|
|
><DIV CLASS="trail"
|
|
>Conversion to HTML copyright 2023 by Gilbert Baumann</DIV
|
|
></DIV
|
|
></DIV
|
|
><SCRIPT
|
|
>domReady();</SCRIPT
|
|
></BODY
|
|
></HTML
|
|
> |