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<h2><span class="refentrytitle">Macro BOOST_VMD_IDENTITY_RESULT</span></h2>
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<p>BOOST_VMD_IDENTITY_RESULT — Macro which wraps any result which can return its value using BOOST_VMD_IDENTITY or 'item BOOST_VMD_EMPTY'. </p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
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<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="header/boost/vmd/identity_hpp.html" title="Header <boost/vmd/identity.hpp>">boost/vmd/identity.hpp</a>>
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</span>BOOST_VMD_IDENTITY_RESULT(result)</pre></div>
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<a name="idm45711064954624"></a><h2>Description</h2>
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<p>result = any single result returned when BOOST_VMD_IDENTITY is used or 'item BOOST_VMD_EMPTY'.</p>
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<p>The reason for this macro is to smooth over a problem when using VC++ with BOOST_VMD_IDENTITY. If your BOOST_VMD_IDENTITY macro can be used where VC++ is the compiler then you need to surround your macro code which could return a result with this macro in order that VC++ handles BOOST_VMD_IDENTITY correctly.</p>
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<p>If you are not using VC++ you do not have to use this macro, but doing so does no harm. </p>
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