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<title>Macro BOOST_VMD_GET_TYPE</title>
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<h2><span class="refentrytitle">Macro BOOST_VMD_GET_TYPE</span></h2>
<p>BOOST_VMD_GET_TYPE &#8212; Returns the type of a sequence as a VMD type. </p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="header/boost/vmd/get_type_hpp.html" title="Header &lt;boost/vmd/get_type.hpp&gt;">boost/vmd/get_type.hpp</a>&gt;

</span>BOOST_VMD_GET_TYPE(...)</pre></div>
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<a name="idm45529680853664"></a><h2>Description</h2>
<p>... = variadic parameters.</p>
<p>The first variadic parameter is required and is the sequence whose type we are getting.</p>
<p>The optional variadic parameters are return type parameters.</p>
<p>The macro returns the type of a sequence as a VMD type. The type of an empty sequence is always BOOST_VMD_TYPE_EMPTY and the type of a multi-element is always BOOST_VMD_TYPE_SEQUENCE. The type of a single-element sequence is the type of that single element.</p>
<p>The type returned can be modified by specifying an optional return type parameter.</p>
<p>If BOOST_VMD_RETURN_TYPE, the default, is specified the specific type of the element is returned.</p>
<p>If BOOST_VMD_RETURN_TYPE_ARRAY is specified an array type is returned if the element is an array, else a tuple type is returned if the element is a tuple, else the actual type is returned for non-tuple data.</p>
<p>If BOOST_VMD_RETURN_TYPE_LIST is specified a list type is returned if the element is a list, else a tuple type is returned if the element is a tuple, else the actual type is returned for non-tuple data.</p>
<p>If BOOST_VMD_RETURN_TYPE_TUPLE is specified a tuple type is returned for all tuple-like data, else the actual type is returned for non-tuple data.</p>
<p>If BOOST_VMD_RETURN_NO_TYPE is specified it is ignored since the macro always returns the type of the sequence.</p>
<p>If more than one return type optional parameter is specified the last one specified determines the return type.</p>
<p>returns = the type of the sequence as a VMD type. </p>
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