60 lines
5.5 KiB
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60 lines
5.5 KiB
HTML
<!-- Common Lisp HyperSpec (TM), version 7.0 generated by Kent M. Pitman on Mon, 11-Apr-2005 2:31am EDT -->
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<TITLE>CLHS: Function STRING</TITLE>
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<A NAME="string"><I>Function</I> <B>STRING</B></A> <P>
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<P><B>Syntax:</B><P>
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<P>
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<B>string</B> <I>x</I> => <I>string</I><P>
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<P>
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<P><B>Arguments and Values:</B><P>
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<P>
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<I>x</I>---a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>, a <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A>, or a <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>character</I></A>. <P>
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<I>string</I>---a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>. <P>
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<P><B>Description:</B><P>
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<P>
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Returns a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A> described by <I>x</I>; specifically: <P>
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<P><UL><LI> If <I>x</I> is a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>, it is returned. <LI> If <I>x</I> is a <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A>, its <A REL=DEFINITION HREF="26_glo_n.htm#name"><I>name</I></A> is returned. <LI> If <I>x</I> is a <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>character</I></A>, then a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A> containing that one <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>character</I></A> is returned. <LI> <A REL=DEFINITION HREF="#string"><B>string</B></A> might perform additional, <A REL=DEFINITION HREF="26_glo_i.htm#implementation-defined"><I>implementation-defined</I></A> conversions. <P></UL><P>
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<P><B>Examples:</B><P>
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<P>
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<PRE>
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(string "already a string") => "already a string"
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(string 'elm) => "ELM"
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(string #\c) => "c"
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</PRE>
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</TT> <P>
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<P><B>Affected By:</B> None.
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<P>
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<P><B>Exceptional Situations:</B><P>
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<P>
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In the case where a conversion is defined neither by this specification nor by the <A REL=DEFINITION HREF="26_glo_i.htm#implementation"><I>implementation</I></A>, an error of <A REL=DEFINITION HREF="26_glo_t.htm#type"><I>type</I></A> <A REL=DEFINITION HREF="e_tp_err.htm#type-error"><B>type-error</B></A> is signaled. <P>
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<P><B>See Also:</B><P>
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<P>
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<A REL=DEFINITION HREF="f_coerce.htm#coerce"><B>coerce</B></A>, <A REL=DEFINITION HREF="t_string.htm#string"><B>string</B></A> (<A REL=DEFINITION HREF="26_glo_t.htm#type"><I>type</I></A>). <P>
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<P><B>Notes:</B><P>
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<P>
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<A REL=DEFINITION HREF="f_coerce.htm#coerce"><B>coerce</B></A> can be used to convert a <A REL=DEFINITION HREF="26_glo_s.htm#sequence"><I>sequence</I></A> of <A REL=DEFINITION HREF="26_glo_c.htm#character"><I>characters</I></A> to a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>. <P>
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<A REL=DEFINITION HREF="f_wr_to_.htm#prin1-to-string"><B>prin1-to-string</B></A>, <A REL=DEFINITION HREF="f_wr_to_.htm#princ-to-string"><B>princ-to-string</B></A>, <A REL=DEFINITION HREF="f_wr_to_.htm#write-to-string"><B>write-to-string</B></A>, or <A REL=DEFINITION HREF="f_format.htm#format"><B>format</B></A> (with a first argument of <A REL=DEFINITION HREF="a_nil.htm#nil"><B>nil</B></A>) can be used to get a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A> representation of a <A REL=DEFINITION HREF="26_glo_n.htm#number"><I>number</I></A> or any other <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A>. <P>
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<P><HR>The following <A REL=META HREF="../Front/X3J13Iss.htm">X3J13 cleanup issues</A>, <I>not part of the specification</I>, apply to this section:<P><UL><LI> <A REL=CHILD HREF="../Issues/iss329.htm">STRING-COERCION:MAKE-CONSISTENT</A><LI> <A REL=CHILD HREF="../Issues/iss027.htm">CHARACTER-PROPOSAL:2-1-1</A><P></UL><HR>
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