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<h2><span class="refentrytitle">Class template tuple</span></h2>
<p>boost::type_erasure::tuple</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="../../boost_typeerasure/reference.html#header.boost.type_erasure.tuple_hpp" title="Header <boost/type_erasure/tuple.hpp>">boost/type_erasure/tuple.hpp</a>>
</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Concept<span class="special">,</span> <span class="keyword">class</span><span class="special">...</span> T<span class="special">></span>
<span class="keyword">class</span> <a class="link" href="tuple.html" title="Class template tuple">tuple</a> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="comment">// <a class="link" href="tuple.html#boost.type_erasure.tupleconstruct-copy-destruct">construct/copy/destruct</a></span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span><span class="special">...</span> U<span class="special">></span> <span class="keyword">explicit</span> <a class="link" href="tuple.html#idm45506890837776-bb"><span class="identifier">tuple</span></a><span class="special">(</span><span class="identifier">U</span> <span class="special">&&</span><span class="special">...</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idm45555075646736"></a><h2>Description</h2>
<p><a class="link" href="tuple.html" title="Class template tuple">tuple</a> is a Boost.Fusion Random Access Sequence containing <a class="link" href="any.html" title="Class template any">anys</a>. <code class="computeroutput">Concept</code> specifies the <a class="link" href="../../boost_typeerasure/conceptdef.html" title="Concept Definitions">Concept</a> for each of the elements. The remaining arguments must be (possibly const and/or reference qualified) placeholders, which are the <a class="link" href="placeholder.html" title="Struct placeholder">placeholders</a> of the elements. </p>
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<a name="idm45555075641888"></a><h3>
<a name="boost.type_erasure.tupleconstruct-copy-destruct"></a><code class="computeroutput">tuple</code>
public
construct/copy/destruct</h3>
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<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span><span class="special">...</span> U<span class="special">></span> <span class="keyword">explicit</span> <a name="idm45506890837776-bb"></a><span class="identifier">tuple</span><span class="special">(</span><span class="identifier">U</span> <span class="special">&&</span><span class="special">...</span> args<span class="special">)</span><span class="special">;</span></pre>
<p>Constructs a tuple. Each element of <code class="computeroutput">args</code> will be used to initialize the corresponding <code class="computeroutput"><a class="link" href="any.html" title="Class template any">any</a></code> member. The <code class="computeroutput"><a class="link" href="binding.html" title="Class template binding">binding</a></code> for the tuple elements is determined by mapping the placeholders in <code class="computeroutput">T</code> to the corresponding types in <code class="computeroutput">U</code>. </p>
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