2002-01-31 15:36:01 +00:00
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<HTML><HEAD><TITLE>Boost PREPROCESSOR library</TITLE><BODY bgcolor="#FFFFFF">
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<a href="index.htm"><IMG height=86 alt="c++boost.gif (8819 bytes)" src="../../../../c++boost.gif" width=277 align=center></a>
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<H1>#include <<a href="../../../../boost/preprocessor/identity.hpp">boost/preprocessor/identity.hpp</a>></H1>
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<hr>
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<H2><a name="BOOST_PP_IDENTITY">#define BOOST_PP_IDENTITY</a>(X)</H2>
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<P>Expands to X once invoked.</P>
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<P>Designed to be used with <a href="if.htm#BOOST_PP_IF">BOOST_PP_IF</a>(), when one of the clauses need to be
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invoked.</P>
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<P>For example,</P>
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<PRE>
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<a href="identity.htm#BOOST_PP_IDENTITY">BOOST_PP_IDENTITY</a>(X)<B>()</B>
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</PRE>
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<P>expands to:</P>
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<PRE>
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X
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</PRE>
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2002-01-31 21:52:46 +00:00
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<H3>Note</H3>
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<P><a href="identity.htm#BOOST_PP_IDENTITY">BOOST_PP_IDENTITY</a>() needs to be invoked.</P>
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2002-01-31 15:36:01 +00:00
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<hr>
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<H2><a name="BOOST_PREPROCESSOR_IDENTITY">#define BOOST_PREPROCESSOR_IDENTITY</a>(X)</H2>
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<P>Obsolete. Use <a href="identity.htm#BOOST_PP_IDENTITY">BOOST_PP_IDENTITY</a>().</P>
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<hr>
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<p>(C) Copyright Housemarque Oy 2002</p>
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<p>Permission to copy, use, modify, sell and distribute this document is granted
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provided this copyright notice appears in all copies. This document is provided
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"as is" without express or implied warranty, and with no claim as to its suitability
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for any purpose.</p>
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<p>Generated: <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %b %Y" startspan --><!--webbot bot="Timestamp" endspan i-checksum="15246" --></p>
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