64 lines
5.5 KiB
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64 lines
5.5 KiB
HTML
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<TITLE>CLHS: Function MAKE-SYMBOL</TITLE>
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<A NAME="make-symbol"><I>Function</I> <B>MAKE-SYMBOL</B></A> <P>
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<P><B>Syntax:</B><P>
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<P>
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<B>make-symbol</B> <I>name</I> => <I>new-symbol</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>name</I>---a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>. <P>
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<I>new-symbol</I>---a <A REL=DEFINITION HREF="26_glo_f.htm#fresh"><I>fresh</I></A>, <A REL=DEFINITION HREF="26_glo_u.htm#uninterned"><I>uninterned</I></A> <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A>. <P>
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<P><B>Description:</B><P>
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<P>
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<A REL=DEFINITION HREF="#make-symbol"><B>make-symbol</B></A> creates and returns a <A REL=DEFINITION HREF="26_glo_f.htm#fresh"><I>fresh</I></A>, <A REL=DEFINITION HREF="26_glo_u.htm#uninterned"><I>uninterned</I></A> <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A> whose <A REL=DEFINITION HREF="26_glo_n.htm#name"><I>name</I></A> is the given <I>name</I>. The <I>new-symbol</I> is neither <A REL=DEFINITION HREF="26_glo_b.htm#bound"><I>bound</I></A> nor <A REL=DEFINITION HREF="26_glo_f.htm#fbound"><I>fbound</I></A> and has a <A REL=DEFINITION HREF="26_glo_n.htm#null"><I>null</I></A> <A REL=DEFINITION HREF="26_glo_p.htm#property_list"><I>property list</I></A>. <P>
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It is <A REL=DEFINITION HREF="26_glo_i.htm#implementation-dependent"><I>implementation-dependent</I></A> whether the <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A> that becomes the <I>new-symbol</I>'s <A REL=DEFINITION HREF="26_glo_n.htm#name"><I>name</I></A> is the given <I>name</I> or a copy of it. Once a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A> has been given as the <I>name</I> <A REL=DEFINITION HREF="26_glo_a.htm#argument"><I>argument</I></A> to <A REL=DEFINITION HREF="#make-symbol"><I>make-symbol</I></A>, the consequences are undefined if a subsequent attempt is made to alter that <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>. <P>
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<P><B>Examples:</B><P>
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<P>
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<PRE>
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(setq temp-string "temp") => "temp"
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(setq temp-symbol (make-symbol temp-string)) => #:|temp|
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(symbol-name temp-symbol) => "temp"
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(eq (symbol-name temp-symbol) temp-string) => <A REL=DEFINITION HREF="26_glo_i.htm#implementation-dependent">implementation-dependent</A>
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(find-symbol "temp") => NIL, NIL
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(eq (make-symbol temp-string) (make-symbol temp-string)) => <A REL=DEFINITION HREF="26_glo_f.htm#false">false</A>
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</PRE>
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</TT> <P>
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<P><B>Side Effects:</B> None.
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<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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Should signal 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> if <I>name</I> is not a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>. <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_cp_sym.htm#copy-symbol"><B>copy-symbol</B></A> <P>
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<P><B>Notes:</B><P>
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<P>
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No attempt is made by <A REL=DEFINITION HREF="#make-symbol"><B>make-symbol</B></A> to convert the case of the <A REL=DEFINITION HREF="26_glo_n.htm#name"><I>name</I></A> to uppercase. The only case conversion which ever occurs for <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbols</I></A> is done by the <A REL=DEFINITION HREF="26_glo_l.htm#lisp_reader"><I>Lisp reader</I></A>. The program interface to <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A> creation retains case, and the program interface to interning symbols is case-sensitive. <P>
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