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| <h2><span class="refentrytitle">Class template make_variant_over</span></h2> |
| <p>boost::make_variant_over — Exposes a <code class="computeroutput">variant</code> whose bounded types are the |
| elements of the given type sequence.</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: <<a class="link" href="../variant/reference.html#header.boost.variant.variant_hpp" title="Header <boost/variant/variant.hpp>">boost/variant/variant.hpp</a>> |
| |
| </span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Sequence<span class="special">></span> |
| <span class="keyword">class</span> <a class="link" href="make_variant_over.html" title="Class template make_variant_over">make_variant_over</a> <span class="special">{</span> |
| <span class="keyword">public</span><span class="special">:</span> |
| <span class="comment">// types</span> |
| <span class="keyword">typedef</span> <span class="identifier">variant</span><span class="special"><</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">></span> <a name="boost.make_variant_over.type"></a><span class="identifier">type</span><span class="special">;</span> |
| <span class="special">}</span><span class="special">;</span></pre></div> |
| <div class="refsect1"> |
| <a name="id3407418"></a><h2>Description</h2> |
| <p><code class="computeroutput">type</code> has behavior equivalent in every respect to |
| <code class="computeroutput"><a class="link" href="variant.html" title="Class template variant">variant</a>< Sequence[0], Sequence[1], ... ></code> |
| (where <code class="computeroutput">Sequence[<span class="emphasis"><em>i</em></span>]</code> denotes the |
| <span class="emphasis"><em>i</em></span>-th element of <code class="computeroutput">Sequence</code>), except |
| that no upper limit is imposed on the number of types.</p> |
| <p><span class="bold"><strong>Notes</strong></span>:</p> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| <code class="computeroutput">Sequence</code> must meet the requirements of |
| <a href="../../../libs/mpl/index.html" target="_top">MPL</a>'s <span class="emphasis"><em>Sequence</em></span> |
| concept.</li> |
| <li class="listitem">Due to standard conformance problems in several compilers, |
| <code class="computeroutput">make_variant_over</code> may not be supported on your |
| compiler. See |
| <code class="computeroutput"><a class="link" href="../BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT.html" title="Macro BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT">BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT</a></code> |
| for more information.</li> |
| </ul></div> |
| </div> |
| </div> |
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| <td align="right"><div class="copyright-footer">Copyright © 2002, 2003 Eric Friedman, Itay Maman<p>Distributed under the Boost Software License, Version 1.0. |
| (See accompanying file <code class="filename">LICENSE_1_0.txt</code> or copy at |
| <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
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