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28<h2><span class="refentrytitle">Function template operator&lt;&lt;</span></h2>
29<p>boost::operator&lt;&lt; &#8212; Provides streaming output for <code class="computeroutput">variant</code> types.</p>
30</div>
31<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
32<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis">
33<span class="bold"><strong>template</strong></span>&lt;<span class="bold"><strong>typename</strong></span> ElemType, <span class="bold"><strong>typename</strong></span> Traits, <span class="bold"><strong>typename</strong></span> T1, <span class="bold"><strong>typename</strong></span> T2, ...,
34         <span class="bold"><strong>typename</strong></span> TN&gt; 
35  <span class="type">std::basic_ostream&lt;ElemType,Traits&gt; &amp;</span> 
36  <span class="bold"><strong>operator</strong></span>&lt;&lt;(std::basic_ostream&lt;ElemType,Traits&gt; &amp; out,
37             <span class="bold"><strong>const</strong></span> <a href="boost/variant.html" title="Class template variant">variant</a>&lt;T1, T2, ..., TN&gt; &amp; rhs);</pre></div>
38<div class="refsect1" lang="en">
39<a name="id1946840"></a><h2>Description</h2>
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45<span class="term">Requires:</span></td>
46<td>Every bounded type of the <code class="computeroutput">variant</code> must
47          fulfill the requirements of the
48          <a href="variant/reference.html#variant.concepts.output-streamable" title="OutputStreamable"><span class="emphasis"><em>OutputStreamable</em></span></a>
49          concept.</td>
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53<span class="term">Effects:</span></td>
54<td>Calls <code class="computeroutput">out &lt;&lt; x</code>, where <code class="computeroutput">x</code> is
55          the content of <code class="computeroutput">rhs</code>.</td>
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