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<div class="titlepage"><div><div><h4 class="title">
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<a name="fusion.sequences.adapted.boost__variant"></a><a href="boost__variant.html" title="boost::variant">boost::variant</a></h4></div></div></div>
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<p>
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This module provides adapters for <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">variant</span></tt>.
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Including the module header makes <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">variant</span></tt>
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a fully conforming <a href="../concepts/forward_sequence.html" title="Forward
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Sequence">Forward
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Sequence</a>. The variant acts as a sequence of the types that can be
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contained in the variant. Accessing types not currently stored int the
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variant will lead to the variant being populated with a default constructed
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value of that type.
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<a name="fusion.sequences.adapted.boost__variant.header"></a><h5>
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<a name="id518383"></a>
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<a href="boost__variant.html#fusion.sequences.adapted.boost__variant.header">Header</a>
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</h5>
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<pre class="programlisting">
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">sequence</span><span class="special">/</span><span class="identifier">adapted</span><span class="special">/</span><span class="identifier">variant</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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</pre>
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<a name="fusion.sequences.adapted.boost__variant.model_of"></a><h5>
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<a name="id518488"></a>
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<a href="boost__variant.html#fusion.sequences.adapted.boost__variant.model_of">Model
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of</a>
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<div class="itemizedlist"><ul type="disc"><li><a href="../concepts/forward_sequence.html" title="Forward
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Sequence">Forward Sequence</a></li></ul></div>
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<a name="fusion.sequences.adapted.boost__variant.example"></a><h5>
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<a name="id518531"></a>
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<a href="boost__variant.html#fusion.sequences.adapted.boost__variant.example">Example</a>
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</h5>
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<pre class="programlisting">
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<span class="identifier">boost</span><span class="special">::</span><span class="identifier">variant</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">></span> <span class="identifier">example_variant</span> <span class="special">=</span> <span class="number">101</span><span class="special">;</span>
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<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">example_variant</span> <span class="special"><<</span> <span class="char">'\n'</span><span class="special">;</span>
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<span class="special">*</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">fusion</span><span class="special">::</span><span class="identifier">find</span><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">>(</span><span class="identifier">example_variant</span><span class="special">)</span> <span class="special">=</span> <span class="string">"hello"</span><span class="special">;</span>
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<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">example_variant</span> <span class="special"><<</span> <span class="char">'\n'</span><span class="special">;</span>
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</pre>
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<a name="fusion.sequences.adapted.boost__variant.see_also"></a><h5>
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<a name="id518814"></a>
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<a href="boost__variant.html#fusion.sequences.adapted.boost__variant.see_also">See also</a>
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</h5>
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<p>
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<a href="http://www.boost.org/doc/html/variant.html" target="_top">Boost.Variant Library</a>
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</p>
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