39 lines
3.1 KiB
HTML
39 lines
3.1 KiB
HTML
|
<!-- Common Lisp HyperSpec (TM), version 7.0 generated by Kent M. Pitman on Mon, 11-Apr-2005 2:31am EDT -->
|
||
|
|
<HTML>
|
||
|
|
<HEAD>
|
||
|
|
<TITLE>CLHS: Section 2.4.8.19.2</TITLE>
|
||
|
|
<LINK HREF="../Data/clhs.css" REL="stylesheet" TYPE="text/css" />
|
||
|
|
<META HTTP-EQUIV="Author" CONTENT="Kent M. Pitman">
|
||
|
|
<META HTTP-EQUIV="Organization" CONTENT="LispWorks Ltd.">
|
||
|
|
<LINK REL=TOP HREF="../Front/index.htm">
|
||
|
|
<LINK REL=COPYRIGHT HREF="../Front/Help.htm#Legal">
|
||
|
|
<LINK REL=DISCLAIMER HREF="../Front/Help.htm#Disclaimer">
|
||
|
|
<LINK REL=PREV HREF="02_dhsa.htm">
|
||
|
|
<LINK REL=UP HREF="02_dhs.htm">
|
||
|
|
<LINK REL=NEXT HREF="02_dht.htm">
|
||
|
|
</HEAD>
|
||
|
|
<BODY>
|
||
|
|
<H1><A REV=MADE HREF="http://www.lispworks.com/"><IMG WIDTH=80 HEIGHT=65 ALT="[LISPWORKS]" SRC="../Graphics/LWSmall.gif" ALIGN=Bottom></A><A REL=TOP HREF="../Front/index.htm"><IMG WIDTH=237 HEIGHT=65 ALT="[Common Lisp HyperSpec (TM)]" SRC="../Graphics/CLHS_Sm.gif" ALIGN=Bottom></A> <A REL=PREV HREF="02_dhsa.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="02_dhs.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="02_dht.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
|
||
|
|
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<H2>
|
||
|
|
2.4.8.19.2 Notes about Style for Sharpsign Vertical-Bar</H2> <P>
|
||
|
|
Some text editors that purport to understand Lisp syntax treat any <TT></TT>|<TT>...</TT>|<TT></TT> as balanced pairs that cannot nest (as if they were just balanced pairs of the multiple escapes used in notating certain symbols). To compensate for this deficiency, some programmers use the notation <TT>#</TT>|<TT></TT>|<TT>...#</TT>|<TT></TT>|<TT>...</TT>|<TT></TT>|<TT>#...</TT>|<TT></TT>|<TT>#</TT> instead of <TT>#</TT>|<TT>...#</TT>|<TT>...</TT>|<TT>#...</TT>|<TT>#</TT>. Note that this alternate usage is not a different <A REL=DEFINITION HREF="26_glo_r.htm#reader_macro"><I>reader macro</I></A>; it merely exploits the fact that the additional vertical-bars occur within the comment in a way that tricks certain text editor into better supporting nested comments. As such, one might sometimes see code like: <P>
|
||
|
|
<PRE>
|
||
|
|
#|| (+ #|| 3 ||# 4 5) ||#
|
||
|
|
</PRE>
|
||
|
|
</TT> <P>
|
||
|
|
Such code is equivalent to: <P>
|
||
|
|
<PRE>
|
||
|
|
#| (+ #| 3 |# 4 5) |#
|
||
|
|
</PRE>
|
||
|
|
</TT> <P>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A REL=NAVIGATOR HREF="../Front/StartPts.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Starting Points]" SRC="../Graphics/StartPts.gif" ALIGN=Bottom></A><A REL=TOC HREF="../Front/Contents.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Contents]" SRC="../Graphics/Contents.gif" ALIGN=Bottom></A><A REL=INDEX HREF="../Front/X_Master.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Index]" SRC="../Graphics/Index.gif" ALIGN=Bottom></A><A REL=INDEX HREF="../Front/X_Symbol.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Symbols]" SRC="../Graphics/Symbols.gif" ALIGN=Bottom></A><A REL=GLOSSARY HREF="../Body/26_a.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Glossary]" SRC="../Graphics/Glossary.gif" ALIGN=Bottom></A><A HREF="../Front/X3J13Iss.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Issues]" SRC="../Graphics/Issues.gif" ALIGN=Bottom></A><BR>
|
||
|
|
|
||
|
|
<A REL=COPYRIGHT HREF="../Front/Help.htm#Legal"><I>Copyright 1996-2005, LispWorks Ltd. All rights reserved.</I></A><P>
|
||
|
|
</BODY>
|
||
|
|
</HTML>
|