63 lines
3.7 KiB
HTML
63 lines
3.7 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 CONS</TITLE>
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<A NAME="cons"><I>Function</I> <B>CONS</B></A> <P>
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<P><B>Syntax:</B><P>
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<P>
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<B>cons</B> <I>object-1 object-2</I> => <I>cons</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>object-1</I>---an <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A>. <P>
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<I>object-2</I>---an <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A>. <P>
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<I>cons</I>---a <A REL=DEFINITION HREF="26_glo_c.htm#cons"><I>cons</I></A>. <P>
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<P><B>Description:</B><P>
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<P>
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Creates a <A REL=DEFINITION HREF="26_glo_f.htm#fresh"><I>fresh</I></A> <A REL=DEFINITION HREF="26_glo_c.htm#cons"><I>cons</I></A>, the <A REL=DEFINITION HREF="26_glo_c.htm#car"><I>car</I></A> of which is <I>object-1</I> and the <A REL=DEFINITION HREF="26_glo_c.htm#cdr"><I>cdr</I></A> of which is <I>object-2</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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(cons 1 2) => (1 . 2)
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(cons 1 nil) => (1)
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(cons nil 2) => (NIL . 2)
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(cons nil nil) => (NIL)
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(cons 1 (cons 2 (cons 3 (cons 4 nil)))) => (1 2 3 4)
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(cons 'a 'b) => (A . B)
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(cons 'a (cons 'b (cons 'c '<TT>()</TT>))) => (A B C)
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(cons 'a '(b c d)) => (A B C D)
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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> None.
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<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_list_.htm#list"><B>list</B></A> <P>
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<P><B>Notes:</B><P>
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If <I>object-2</I> is a <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A>, <A REL=DEFINITION HREF="#cons"><B>cons</B></A> can be thought of as producing a new <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> which is like it but has <I>object-1</I> prepended. <HR>
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