68 lines
4.2 KiB
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68 lines
4.2 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: Accessor FILL-POINTER</TITLE>
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<A NAME="fill-pointer"><I>Accessor</I> <B>FILL-POINTER</B></A> <P>
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<P><B>Syntax:</B><P>
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<P>
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<B>fill-pointer</B> <I>vector</I> => <I>fill-pointer</I><P>
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<TT>(setf (</TT><B>fill-pointer</B> <I>vector</I><TT>) </TT><I>new-fill-pointer</I><TT>)</TT><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>vector</I>---a <A REL=DEFINITION HREF="26_glo_v.htm#vector"><I>vector</I></A> with a <A REL=DEFINITION HREF="26_glo_f.htm#fill_pointer"><I>fill pointer</I></A>. <P>
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<I>fill-pointer</I>, <I>new-fill-pointer</I>---a <A REL=DEFINITION HREF="26_glo_v.htm#valid_fill_pointer"><I>valid fill pointer</I></A> for the <I>vector</I>. <P>
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<P><B>Description:</B><P>
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<P>
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<A REL=DEFINITION HREF="26_glo_a.htm#access"><I>Accesses</I></A> the <A REL=DEFINITION HREF="26_glo_f.htm#fill_pointer"><I>fill pointer</I></A> of <I>vector</I>. <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 a (make-array 8 :fill-pointer 4)) => #(NIL NIL NIL NIL)
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(fill-pointer a) => 4
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(dotimes (i (length a)) (setf (aref a i) (* i i))) => NIL
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a => #(0 1 4 9)
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(setf (fill-pointer a) 3) => 3
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(fill-pointer a) => 3
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a => #(0 1 4)
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(setf (fill-pointer a) 8) => 8
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a => #(0 1 4 9 NIL NIL NIL NIL)
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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>vector</I> is not a <A REL=DEFINITION HREF="26_glo_v.htm#vector"><I>vector</I></A> with a <A REL=DEFINITION HREF="26_glo_f.htm#fill_pointer"><I>fill pointer</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_mk_ar.htm#make-array"><B>make-array</B></A>, <A REL=DEFINITION HREF="f_length.htm#length"><B>length</B></A> <P>
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<P><B>Notes:</B><P>
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<P>
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There is no <A REL=DEFINITION HREF="26_glo_o.htm#operator"><I>operator</I></A> that will remove a <A REL=DEFINITION HREF="26_glo_v.htm#vector"><I>vector</I></A>'s <A REL=DEFINITION HREF="26_glo_f.htm#fill_pointer"><I>fill pointer</I></A>. <P>
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