235 lines
4.9 KiB
HTML
235 lines
4.9 KiB
HTML
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<!DOCTYPE HTML>
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<HTML LANG="en-us"
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><HEAD
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><TITLE
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>satisfies | Common Lisp Nova Spec</TITLE
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><META CHARSET="US-ASCII"
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><LINK REL="canonical" HREF="t_satisfies.html"
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><LINK REL="next" HREF="t_member.html" TYPE="text/html" TITLE="member"
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><LINK REL="prev" HREF="t_t.html" TYPE="text/html" TITLE="t"
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><LINK REL="up" HREF="4_4_Types_and_Classes_Dictionary.html" TYPE="text/html" TITLE="4.4 Types and Classes Dictionary"
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><LINK REL="start" HREF="index.html" TYPE="text/html" TITLE="Common Lisp Nova Spec"
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><META NAME="VIEWPORT" CONTENT="width=device-width, initial-scale=1.0"
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><BODY
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><DIV
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><DIV CLASS="topnav"
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><DIV CLASS="breadcrumb"
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><SPAN CLASS="breadcrumb-item"
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><A HREF="index.html"
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>Common Lisp Nova Spec</A
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></SPAN
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> <SPAN CLASS="breadcrumb-item"
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>→ <A HREF="4_Types_and_Classes.html"
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>4. Types and Classes</A
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></SPAN
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> <SPAN CLASS="breadcrumb-item"
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>→ <A HREF="4_4_Types_and_Classes_Dictionary.html"
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>4.4 Types and Classes Dictionary</A
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></SPAN
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> <SPAN CLASS="breadcrumb-item"
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>→ <A HREF="t_satisfies.html"
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>satisfies</A
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></SPAN
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></DIV
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><DIV CLASS="apropos"
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><DIV CLASS="apropos-io"
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><A HREF="t_t.html" CLASS="prev"
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>←</A
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><SPAN ID="apropos-label"
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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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><A HREF="t_member.html" CLASS="next"
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>→</A
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></DIV
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><DIV ID="apropos-res"
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></DIV
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></DIV
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></DIV
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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="satisfies"
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></SPAN
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><B
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>satisfies</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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>Type</I
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> <I
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>Specifier</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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>Compound Type Specifier Kind</B
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></DT
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><DD
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><P CLASS="j"
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>Predicating.</P
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></DD
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><DT
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><B
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>Compound Type Specifier Syntax</B
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></DT
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><DD
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><TABLE CELLSPACING="0" CELLPADDING="0" RULES="GROUPS" STYLE="margin: 1ex 0"
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><TBODY
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><TR
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><TD ALIGN="LEFT" VALIGN="BASELINE" STYLE=";"
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><SPAN CLASS="cmtt"
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>(satisfies</SPAN
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> <SPAN CLASS="cmssi"
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>predicate-name</SPAN
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><SPAN CLASS="cmtt"
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>)</SPAN
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></TD
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></TR
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></TBODY
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></TABLE
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></DD
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><DT
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><B
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>Compound Type Specifier 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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>predicate-name</VAR
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> — a <A HREF="26_1_Glossary.html#symbol"
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><EM CLASS="term"
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>symbol</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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>Compound Type Specifier Description</B
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></DT
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><DD
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><P CLASS="j"
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>This denotes the set of all <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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> that satisfy the <A HREF="26_1_Glossary.html#predicate"
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><EM CLASS="term"
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>predicate</EM
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></A
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> <VAR CLASS="param"
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>predicate-name</VAR
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>, which must be a <A HREF="26_1_Glossary.html#symbol"
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><EM CLASS="term"
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>symbol</EM
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></A
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> whose global <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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> definition is a one-argument predicate. A name is required for <VAR CLASS="param"
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>predicate-name</VAR
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>; <A HREF="26_1_Glossary.html#lambda_expression"
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><EM CLASS="term"
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>lambda expressions</EM
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></A
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> are not allowed. For example, the <A HREF="26_1_Glossary.html#type_specifier"
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><EM CLASS="term"
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>type specifier</EM
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></A
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> <SPAN CLASS="cmtt"
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>(and</SPAN
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> <SPAN CLASS="cmtt"
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>integer</SPAN
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> <SPAN CLASS="cmtt"
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>(satisfies</SPAN
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> <SPAN CLASS="cmtt"
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>evenp))</SPAN
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> denotes the set of all even integers. The form <SPAN CLASS="cmtt"
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>(typep</SPAN
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> <VAR CLASS="param"
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>x</VAR
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> <SPAN CLASS="cmtt"
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>'(satisfies</SPAN
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> <VAR CLASS="param"
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>p</VAR
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><SPAN CLASS="cmtt"
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>))</SPAN
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> is equivalent to <SPAN CLASS="cmtt"
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>(if</SPAN
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> <SPAN CLASS="cmtt"
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>(</SPAN
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><VAR CLASS="param"
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>p</VAR
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> <VAR CLASS="param"
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>x</VAR
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><SPAN CLASS="cmtt"
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>)</SPAN
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> <SPAN CLASS="cmtt"
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>t</SPAN
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> <SPAN CLASS="cmtt"
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>nil)</SPAN
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>. </P
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><P CLASS="j"
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>The argument is required. The <A HREF="26_1_Glossary.html#symbol"
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><EM CLASS="term"
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>symbol</EM
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></A
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> <SPAN CLASS="misc"
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><B
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>*</B
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></SPAN
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> can be the argument, but it denotes itself (the <A HREF="26_1_Glossary.html#symbol"
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><EM CLASS="term"
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>symbol</EM
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></A
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> <SPAN CLASS="misc"
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><B
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>*</B
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></SPAN
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>), and does not represent an unspecified value. </P
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><P CLASS="j"
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>The symbol <A HREF="t_satisfies.html" CLASS="typeref"
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><B
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>satisfies</B
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></A
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> is not valid as a <A HREF="26_1_Glossary.html#type_specifier"
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><EM CLASS="term"
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>type specifier</EM
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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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></DIV
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><DIV CLASS="footer"
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><DIV CLASS="btmnav"
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><A HREF="t_t.html" CLASS="prev"
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>←</A
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><A HREF="t_member.html" CLASS="next"
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>→</A
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></DIV
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><DIV CLASS="trail"
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>Conversion to HTML copyright 2023 by Gilbert Baumann</DIV
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></DIV
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></DIV
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><SCRIPT
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>domReady();</SCRIPT
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></BODY
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></HTML
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>
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