79 lines
4.7 KiB
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79 lines
4.7 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 TERPRI, FRESH-LINE</TITLE>
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<A NAME="terpri"><A NAME="fresh-line"><I>Function</I> <B>TERPRI, FRESH-LINE</B></A></A> <P>
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<P><B>Syntax:</B><P>
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<P>
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<B>terpri</B> <I><TT>&optional</TT> output-stream</I> => <I><A REL=DEFINITION HREF="a_nil.htm#nil"><B>nil</B></A></I><P>
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<B>fresh-line</B> <I><TT>&optional</TT> output-stream</I> => <I>generalized-boolean</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>output-stream</I> -- an <A REL=DEFINITION HREF="26_glo_o.htm#output"><I>output</I></A> <A REL=DEFINITION HREF="26_glo_s.htm#stream_designator"><I>stream designator</I></A>. The default is <A REL=DEFINITION HREF="26_glo_s.htm#standard_output"><I>standard output</I></A>. <P>
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<I>generalized-boolean</I>---a <A REL=DEFINITION HREF="26_glo_g.htm#generalized_boolean"><I>generalized boolean</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="#terpri"><B>terpri</B></A> outputs a <A REL=DEFINITION HREF="26_glo_n.htm#newline"><I>newline</I></A> to <I>output-stream</I>. <P>
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<A REL=DEFINITION HREF="#fresh-line"><B>fresh-line</B></A> is similar to <A REL=DEFINITION HREF="#terpri"><B>terpri</B></A> but outputs a <A REL=DEFINITION HREF="26_glo_n.htm#newline"><I>newline</I></A> only if the <I>output-stream</I> is not already at the start of a line. If for some reason this cannot be determined, then a <A REL=DEFINITION HREF="26_glo_n.htm#newline"><I>newline</I></A> is output anyway. <A REL=DEFINITION HREF="#fresh-line"><B>fresh-line</B></A> returns <A REL=DEFINITION HREF="26_glo_t.htm#true"><I>true</I></A> if it outputs a <A REL=DEFINITION HREF="26_glo_n.htm#newline"><I>newline</I></A>; otherwise it returns <A REL=DEFINITION HREF="26_glo_f.htm#false"><I>false</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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(with-output-to-string (s)
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(write-string "some text" s)
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(terpri s)
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(terpri s)
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(write-string "more text" s))
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=> "some text
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more text"
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(with-output-to-string (s)
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(write-string "some text" s)
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(fresh-line s)
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(fresh-line s)
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(write-string "more text" s))
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=> "some text
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more text"
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</PRE>
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</TT> <P>
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<P><B>Side Effects:</B><P>
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<P>
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The <I>output-stream</I> is modified. <P>
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<P><B>Affected By:</B><P>
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<P>
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<A REL=DEFINITION HREF="v_debug_.htm#STstandard-outputST"><B>*standard-output*</B></A>, <A REL=DEFINITION HREF="v_termin.htm#STterminal-ioST"><B>*terminal-io*</B></A>. <P>
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<P><B>Exceptional Situations:</B><P>
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<P>
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None. <P><B>See Also:</B> None.
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<P>
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<P><B>Notes:</B><P>
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<P>
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<A REL=DEFINITION HREF="#terpri"><B>terpri</B></A> is identical in effect to <P>
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<PRE>
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(write-char #\Newline output-stream)
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</PRE>
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</TT> <P>
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<HR>
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