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<!DOCTYPE HTML>
<HTML LANG="en-us"
><HEAD
><TITLE
>search | Common Lisp Nova Spec</TITLE
><META CHARSET="US-ASCII"
><LINK REL="canonical" HREF="f_search.html"
><LINK REL="next" HREF="f_mismatch.html" TYPE="text/html" TITLE="mismatch"
><LINK REL="prev" HREF="f_position.html" TYPE="text/html" TITLE="position, position-if, position-if-not"
><LINK REL="up" HREF="17_3_Sequences_Dictionary.html" TYPE="text/html" TITLE="17.3 Sequences Dictionary"
><LINK REL="start" HREF="index.html" TYPE="text/html" TITLE="Common Lisp Nova Spec"
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><LINK REL="STYLESHEET" HREF="dpans.css%3F3909942064.css"
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></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"
>&#8594; <A HREF="17_Sequences.html"
>17. Sequences</A
></SPAN
> <SPAN CLASS="breadcrumb-item"
>&#8594; <A HREF="17_3_Sequences_Dictionary.html"
>17.3 Sequences Dictionary</A
></SPAN
> <SPAN CLASS="breadcrumb-item"
>&#8594; <A HREF="f_search.html"
>search</A
></SPAN
></DIV
><DIV CLASS="apropos"
><DIV CLASS="apropos-io"
><A HREF="f_position.html" CLASS="prev"
>&#8592;</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_mismatch.html" CLASS="next"
>&#8594;</A
></DIV
><DIV ID="apropos-res"
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></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="search"
></SPAN
><B
>search</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
><TABLE CELLPADDING="0" CELLSPACING="0"
><TR
><TD VALIGN="BASELINE" ALIGN="LEFT" NOWRAP="NOWRAP"
><B
>search</B
><SPAN CLASS="cmssi"
>&#160;</SPAN
><SPAN CLASS="cmssi"
>sequence-1</SPAN
><SPAN CLASS="cmssi"
>&#160;</SPAN
><SPAN CLASS="cmssi"
>sequence-2</SPAN
><SPAN CLASS="cmtt"
>&#160;</SPAN
><SPAN CLASS="cmtt"
>&amp;key</SPAN
><SPAN CLASS="cmssi"
>&#160;</SPAN
></TD
><TD VALIGN="BASELINE" ALIGN="LEFT"
><SPAN CLASS="cmssi"
>from-end</SPAN
> <SPAN CLASS="cmssi"
>test</SPAN
> <SPAN CLASS="cmssi"
>test-not</SPAN
><BR
><SPAN CLASS="cmssi"
>key</SPAN
> <SPAN CLASS="cmssi"
>start1</SPAN
> <SPAN CLASS="cmssi"
>start2</SPAN
><BR
><SPAN CLASS="cmssi"
>end1</SPAN
> <SPAN CLASS="cmssi"
>end2</SPAN
></TD
></TR
></TABLE
><DIV
><SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> <SPAN CLASS="cmssi"
>position</SPAN
></DIV
></DD
><DT
><B
>Arguments and Values</B
></DT
><DD
><P CLASS="j"
><VAR CLASS="param"
>Sequence-1</VAR
> &#8212; a <A HREF="26_1_Glossary.html#sequence"
><EM CLASS="term"
>sequence</EM
></A
>. </P
><P CLASS="j"
><VAR CLASS="param"
>Sequence-2</VAR
> &#8212; a <A HREF="26_1_Glossary.html#sequence"
><EM CLASS="term"
>sequence</EM
></A
>. </P
><P CLASS="j"
><VAR CLASS="param"
>from-end</VAR
> &#8212; a <A HREF="26_1_Glossary.html#generalized_boolean"
><EM CLASS="term"
>generalized boolean</EM
></A
>. The default is <A HREF="26_1_Glossary.html#false"
><EM CLASS="term"
>false</EM
></A
>. </P
><P CLASS="j"
><VAR CLASS="param"
>test</VAR
> &#8212; a <A HREF="26_1_Glossary.html#designator"
><EM CLASS="term"
>designator</EM
></A
> for a <A HREF="26_1_Glossary.html#function"
><EM CLASS="term"
>function</EM
></A
> of two <A HREF="26_1_Glossary.html#argument"
><EM CLASS="term"
>arguments</EM
></A
> that returns a <A HREF="26_1_Glossary.html#generalized_boolean"
><EM CLASS="term"
>generalized boolean</EM
></A
>. </P
><P CLASS="j"
><VAR CLASS="param"
>test-not</VAR
> &#8212; a <A HREF="26_1_Glossary.html#designator"
><EM CLASS="term"
>designator</EM
></A
> for a <A HREF="26_1_Glossary.html#function"
><EM CLASS="term"
>function</EM
></A
> of two <A HREF="26_1_Glossary.html#argument"
><EM CLASS="term"
>arguments</EM
></A
> that returns a <A HREF="26_1_Glossary.html#generalized_boolean"
><EM CLASS="term"
>generalized boolean</EM
></A
>. </P
><P CLASS="j"
><VAR CLASS="param"
>key</VAR
> &#8212; a <A HREF="26_1_Glossary.html#designator"
><EM CLASS="term"
>designator</EM
></A
> for a <A HREF="26_1_Glossary.html#function"
><EM CLASS="term"
>function</EM
></A
> of one argument, or <SPAN CLASS="misc"
><B
>nil</B
></SPAN
>. </P
><P CLASS="j"
><VAR CLASS="param"
>start1</VAR
>, <VAR CLASS="param"
>end1</VAR
> &#8212; <A HREF="26_1_Glossary.html#bounding_index_designator"
><EM CLASS="term"
>bounding index designators</EM
></A
> of <VAR CLASS="param"
>sequence-1</VAR
>. The defaults for <VAR CLASS="param"
>start1</VAR
> and <VAR CLASS="param"
>end1</VAR
> are <CODE CLASS="f"
>0</CODE
> and <SPAN CLASS="misc"
><B
>nil</B
></SPAN
>, respectively. </P
><P CLASS="j"
><VAR CLASS="param"
>start2</VAR
>, <VAR CLASS="param"
>end2</VAR
> &#8212; <A HREF="26_1_Glossary.html#bounding_index_designator"
><EM CLASS="term"
>bounding index designators</EM
></A
> of <VAR CLASS="param"
>sequence-2</VAR
>. The defaults for <VAR CLASS="param"
>start2</VAR
> and <VAR CLASS="param"
>end2</VAR
> are <CODE CLASS="f"
>0</CODE
> and <SPAN CLASS="misc"
><B
>nil</B
></SPAN
>, respectively. </P
><P CLASS="j"
><VAR CLASS="param"
>position</VAR
> &#8212; a <A HREF="26_1_Glossary.html#bounding_index"
><EM CLASS="term"
>bounding index</EM
></A
> of <VAR CLASS="param"
>sequence-2</VAR
>, or <SPAN CLASS="misc"
><B
>nil</B
></SPAN
>.</P
></DD
><DT
><B
>Description</B
></DT
><DD
><P CLASS="j"
>Searches <VAR CLASS="param"
>sequence-2</VAR
> for a subsequence that matches <VAR CLASS="param"
>sequence-1</VAR
>. </P
><P CLASS="j"
>The implementation may choose to search <VAR CLASS="param"
>sequence-2</VAR
> in any order; there is no guarantee on the number of times the test is made. For example, when <VAR CLASS="param"
>start-end</VAR
> is <A HREF="26_1_Glossary.html#true"
><EM CLASS="term"
>true</EM
></A
>, the <VAR CLASS="param"
>sequence</VAR
> might actually be searched from left to right instead of from right to left (but in either case would return the rightmost matching subsequence). If the search succeeds, <A HREF="f_search.html" CLASS="funref"
><B
>search</B
></A
> returns the offset into <VAR CLASS="param"
>sequence-2</VAR
> of the first element of the leftmost or rightmost matching subsequence, depending on <VAR CLASS="param"
>from-end</VAR
>; otherwise <A HREF="f_search.html" CLASS="funref"
><B
>search</B
></A
> returns <SPAN CLASS="misc"
><B
>nil</B
></SPAN
>. </P
><P CLASS="j"
>If <VAR CLASS="param"
>from-end</VAR
> is <A HREF="26_1_Glossary.html#true"
><EM CLASS="term"
>true</EM
></A
>, the index of the leftmost element of the rightmost matching subsequence is returned.</P
></DD
><DT
><B
>Examples</B
></DT
><DD
><PRE CLASS="screen"
>(search "dog" "it's a dog's life") <SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> 7
(search '(0 1) '(2 4 6 1 3 5) :key #'oddp) <SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> 2</PRE
></DD
><DT
><B
>See Also</B
></DT
><DD
><P CLASS="j"
><A HREF="3_6_Traversal_Rules_and_Side_Effects.html#sec_3_6" CLASS="secref"
><SPAN CLASS="cmr"
>Section</SPAN
> <SPAN CLASS="cmr"
>3.6</SPAN
> <SPAN CLASS="cmr"
>(Traversal</SPAN
> <SPAN CLASS="cmr"
>Rules</SPAN
> <SPAN CLASS="cmr"
>and</SPAN
> <SPAN CLASS="cmr"
>Side</SPAN
> <SPAN CLASS="cmr"
>Effects)</SPAN
></A
></P
></DD
><DT
><B
>Notes</B
></DT
><DD
><P CLASS="j"
>The <SPAN CLASS="kwd"
><SPAN CLASS="cmtt"
>:test-not</SPAN
></SPAN
> <A HREF="26_1_Glossary.html#argument"
><EM CLASS="term"
>argument</EM
></A
> is deprecated.</P
></DD
></DL
></DIV
></DIV
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><DIV CLASS="btmnav"
><A HREF="f_position.html" CLASS="prev"
>&#8592;</A
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>&#8594;</A
></DIV
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>Conversion to HTML copyright 2023 by Gilbert Baumann</DIV
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