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<div class="section" lang="en">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="fusion.support.pair"></a><a href="pair.html" title="pair">pair</a></h3></div></div></div>
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<a name="fusion.support.pair.description"></a><h4>
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<a name="id931964"></a>
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<a name="id465407"></a>
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<a href="pair.html#fusion.support.pair.description">Description</a>
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</h4>
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<p>
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Fusion <code class="computeroutput"><span class="identifier">pair</span></code> type is a half
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runtime pair. A half runtime pair is similar to a <a href="../sequences/adapted/std__pair.html" title="std::pair"><code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span></code></a>,
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but, unlike <a href="../sequences/adapted/std__pair.html" title="std::pair"><code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span></code></a>,
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Fusion <tt class="computeroutput"><span class="identifier">pair</span></tt> type is a half
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runtime pair. A half runtime pair is similar to a <a href="../sequences/adapted/std__pair.html" title="std::pair"><tt class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span></tt></a>,
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but, unlike <a href="../sequences/adapted/std__pair.html" title="std::pair"><tt class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span></tt></a>,
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the first type does not have data. It is used as elements in <span class="underline">_map</span>_s,
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for example.
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</p>
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<a name="fusion.support.pair.synopsis"></a><h4>
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<a name="id932056"></a>
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<a name="id465512"></a>
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<a href="pair.html#fusion.support.pair.synopsis">Synopsis</a>
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</h4>
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<pre class="programlisting">
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@ -61,7 +61,7 @@
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<span class="identifier">make_pair</span><span class="special">(</span><span class="identifier">Second</span> <span class="keyword">const</span> <span class="special">&);</span>
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</pre>
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<a name="fusion.support.pair.template_parameters"></a><h4>
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<a name="id932447"></a>
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<a name="id465954"></a>
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<a href="pair.html#fusion.support.pair.template_parameters">Template parameters</a>
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</h4>
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<div class="informaltable"><table class="table">
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@ -111,36 +111,36 @@
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<div class="variablelist">
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<p class="title"><b>Notation</b></p>
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<dl>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">P</span></code></span></dt>
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<dd>
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Fusion pair type
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</dd>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">p</span></code>,
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<code class="computeroutput"><span class="identifier">p2</span></code></span></dt>
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<dd>
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Fusion pairs
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</dd>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">F</span></code>,
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<code class="computeroutput"><span class="identifier">S</span></code></span></dt>
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<dd>
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Arbitrary types
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</dd>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">s</span></code></span></dt>
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<dd>
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Value of type <code class="computeroutput"><span class="identifier">S</span></code>
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</dd>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">o</span></code></span></dt>
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<dd>
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Output stream
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</dd>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">i</span></code></span></dt>
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<dd>
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Input stream
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</dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">P</span></tt></span></dt>
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<dd><p>
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Fusion pair type
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</p></dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">p</span></tt>,
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<tt class="computeroutput"><span class="identifier">p2</span></tt></span></dt>
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<dd><p>
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Fusion pairs
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</p></dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt>,
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<tt class="computeroutput"><span class="identifier">S</span></tt></span></dt>
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<dd><p>
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Arbitrary types
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</p></dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">s</span></tt></span></dt>
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<dd><p>
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Value of type <tt class="computeroutput"><span class="identifier">S</span></tt>
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</p></dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">o</span></tt></span></dt>
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<dd><p>
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Output stream
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</p></dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">i</span></tt></span></dt>
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<dd><p>
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Input stream
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</p></dd>
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</dl>
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</div>
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<a name="fusion.support.pair.expression_semantics"></a><h4>
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<a name="id932676"></a>
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<a name="id466235"></a>
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<a href="pair.html#fusion.support.pair.expression_semantics">Expression Semantics</a>
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</h4>
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<div class="informaltable"><table class="table">
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@ -164,33 +164,33 @@
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">P</span><span class="special">::</span><span class="identifier">first_type</span></code>
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<tt class="computeroutput"><span class="identifier">P</span><span class="special">::</span><span class="identifier">first_type</span></tt>
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</p>
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</td>
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<td>
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<p>
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The type of the first template parameter, <code class="computeroutput"><span class="identifier">F</span></code>,
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equivalent to <code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">first</span><span class="special"><</span><span class="identifier">P</span><span class="special">>::</span><span class="identifier">type</span></code>.
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The type of the first template parameter, <tt class="computeroutput"><span class="identifier">F</span></tt>,
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equivalent to <tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">first</span><span class="special"><</span><span class="identifier">P</span><span class="special">>::</span><span class="identifier">type</span></tt>.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">P</span><span class="special">::</span><span class="identifier">second_type</span></code>
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<tt class="computeroutput"><span class="identifier">P</span><span class="special">::</span><span class="identifier">second_type</span></tt>
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</p>
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</td>
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<td>
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<p>
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The type of the second template parameter, <code class="computeroutput"><span class="identifier">S</span></code>,
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equivalent to <code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">second</span><span class="special"><</span><span class="identifier">P</span><span class="special">>::</span><span class="identifier">type</span></code>.
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The type of the second template parameter, <tt class="computeroutput"><span class="identifier">S</span></tt>,
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equivalent to <tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">second</span><span class="special"><</span><span class="identifier">P</span><span class="special">>::</span><span class="identifier">type</span></tt>.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">P</span><span class="special">()</span></code>
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<tt class="computeroutput"><span class="identifier">P</span><span class="special">()</span></tt>
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</p>
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</td>
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<td>
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@ -202,37 +202,37 @@
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">P</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></code>
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<tt class="computeroutput"><span class="identifier">P</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></tt>
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</p>
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</td>
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<td>
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<p>
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Construct a pair given value for the second type, <code class="computeroutput"><span class="identifier">s</span></code>.
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Construct a pair given value for the second type, <tt class="computeroutput"><span class="identifier">s</span></tt>.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">P</span><span class="special">(</span><span class="identifier">p2</span><span class="special">)</span></code>
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<tt class="computeroutput"><span class="identifier">P</span><span class="special">(</span><span class="identifier">p2</span><span class="special">)</span></tt>
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</p>
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</td>
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<td>
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<p>
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Copy constructs a pair from another pair, <code class="computeroutput"><span class="identifier">p2</span></code>.
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Copy constructs a pair from another pair, <tt class="computeroutput"><span class="identifier">p2</span></tt>.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">p</span> <span class="special">=</span>
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<span class="identifier">p2</span></code>
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<tt class="computeroutput"><span class="identifier">p</span> <span class="special">=</span>
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<span class="identifier">p2</span></tt>
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</p>
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</td>
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<td>
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<p>
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Assigns a pair, p1, from another pair, <code class="computeroutput"><span class="identifier">p2</span></code>.
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Assigns a pair, p1, from another pair, <tt class="computeroutput"><span class="identifier">p2</span></tt>.
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</p>
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</td>
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</tr>
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@ -244,45 +244,45 @@
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</td>
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<td>
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<p>
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Make a pair given the first type, <code class="computeroutput"><span class="identifier">F</span></code>,
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and a value for the second type, <code class="computeroutput"><span class="identifier">s</span></code>.
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The second type assumes the type of <code class="computeroutput"><span class="identifier">s</span></code>
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Make a pair given the first type, <tt class="computeroutput"><span class="identifier">F</span></tt>,
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and a value for the second type, <tt class="computeroutput"><span class="identifier">s</span></tt>.
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The second type assumes the type of <tt class="computeroutput"><span class="identifier">s</span></tt>
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">o</span> <span class="special"><<</span>
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<span class="identifier">p</span></code>
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<tt class="computeroutput"><span class="identifier">o</span> <span class="special"><<</span>
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<span class="identifier">p</span></tt>
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</p>
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</td>
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<td>
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<p>
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Output <code class="computeroutput"><span class="identifier">p</span></code> to output
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stream, <code class="computeroutput"><span class="identifier">o</span></code>.
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Output <tt class="computeroutput"><span class="identifier">p</span></tt> to output
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stream, <tt class="computeroutput"><span class="identifier">o</span></tt>.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">i</span> <span class="special">>></span>
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<span class="identifier">p</span></code>
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<tt class="computeroutput"><span class="identifier">i</span> <span class="special">>></span>
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<span class="identifier">p</span></tt>
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</p>
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</td>
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<td>
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<p>
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Input <code class="computeroutput"><span class="identifier">p</span></code> from input
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stream, <code class="computeroutput"><span class="identifier">i</span></code>.
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Input <tt class="computeroutput"><span class="identifier">p</span></tt> from input
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stream, <tt class="computeroutput"><span class="identifier">i</span></tt>.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">p</span> <span class="special">==</span>
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<span class="identifier">p2</span></code>
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<tt class="computeroutput"><span class="identifier">p</span> <span class="special">==</span>
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<span class="identifier">p2</span></tt>
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</p>
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</td>
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<td>
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@ -294,8 +294,8 @@
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">p</span> <span class="special">!=</span>
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<span class="identifier">p2</span></code>
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<tt class="computeroutput"><span class="identifier">p</span> <span class="special">!=</span>
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<span class="identifier">p2</span></tt>
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</p>
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</td>
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<td>
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@ -307,14 +307,14 @@
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</tbody>
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</table></div>
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<a name="fusion.support.pair.header"></a><h4>
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||||
<a name="id933307"></a>
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||||
<a name="id466948"></a>
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||||
<a href="pair.html#fusion.support.pair.header">Header</a>
|
||||
</h4>
|
||||
<pre class="programlisting">
|
||||
<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">support</span><span class="special">/</span><span class="identifier">pair</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
|
||||
</pre>
|
||||
<a name="fusion.support.pair.example"></a><h4>
|
||||
<a name="id933389"></a>
|
||||
<a name="id467042"></a>
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||||
<a href="pair.html#fusion.support.pair.example">Example</a>
|
||||
</h4>
|
||||
<pre class="programlisting">
|
||||
@ -331,7 +331,7 @@
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||||
</tr></table>
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||||
<hr>
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<div class="spirit-nav">
|
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<a accesskey="p" href="deduce_sequence.html"><img src="../../images/prev.png" alt="Prev"></a><a accesskey="u" href="../support.html"><img src="../../images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../images/home.png" alt="Home"></a><a accesskey="n" href="../iterators.html"><img src="../../images/next.png" alt="Next"></a>
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<a accesskey="p" href="deduce_sequence.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../support.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../iterators.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
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</div>
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</body>
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</html>
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