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<h2><span class="refentrytitle">Macro BOOST_VMD_IS_TUPLE</span></h2>
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<p>BOOST_VMD_IS_TUPLE — Tests whether a sequence is a Boost PP tuple. </p>
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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/is_tuple_hpp.html" title="Header <boost/vmd/is_tuple.hpp>">boost/vmd/is_tuple.hpp</a>>
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</span>BOOST_VMD_IS_TUPLE(sequence)</pre></div>
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<a name="idm45711064613344"></a><h2>Description</h2>
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<p>The macro checks to see if a sequence is a Boost PP tuple. A Boost PP tuple is preprocessor tokens enclosed by a set of parentheses with no preprocessing tokens before or after the parentheses.</p>
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<p>sequence = a possible tuple</p>
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<p>returns = 1 if the sequence is a Boost PP tuple, 0 if it is not. </p>
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