forked from boostorg/fusion
added reverse_fold/iter_fold/reverse_iter_fold (2) (fixes #1623)
[SVN r63083]
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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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<title>at_key</title>
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<link rel="stylesheet" href="../../../../../../../../doc/html/boostbook.css" type="text/css">
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<meta name="generator" content="DocBook XSL Stylesheets V1.76.0-pre">
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.1">
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<link rel="home" href="../../../../index.html" title="Chapter 1. Fusion 2.0">
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<link rel="up" href="../metafunctions.html" title="Metafunctions">
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<link rel="prev" href="has_key.html" title="has_key">
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@ -27,14 +27,14 @@
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<a name="fusion.sequence.intrinsic.metafunctions.at_key"></a><a class="link" href="at_key.html" title="at_key">at_key</a>
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</h5></div></div></div>
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<a name="fusion.sequence.intrinsic.metafunctions.at_key.description"></a><h6>
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<a name="id814440"></a>
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<a name="id921619"></a>
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<a class="link" href="at_key.html#fusion.sequence.intrinsic.metafunctions.at_key.description">Description</a>
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</h6>
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<p>
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Returns the result type of <a class="link" href="../functions/at_key.html" title="at_key"><code class="computeroutput"><span class="identifier">at_key</span></code></a><sup>[<a name="id814477" href="#ftn.id814477" class="footnote">8</a>]</sup>.
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Returns the result type of <a class="link" href="../functions/at_key.html" title="at_key"><code class="computeroutput"><span class="identifier">at_key</span></code></a><sup>[<a name="id921642" href="#ftn.id921642" class="footnote">8</a>]</sup>.
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</p>
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<a name="fusion.sequence.intrinsic.metafunctions.at_key.synopsis"></a><h6>
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<a name="id814594"></a>
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<a name="id921712"></a>
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<a class="link" href="at_key.html#fusion.sequence.intrinsic.metafunctions.at_key.synopsis">Synopsis</a>
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</h6>
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<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span>
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@ -46,7 +46,7 @@
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<span class="special">};</span>
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</pre>
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<div class="table">
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<a name="id814710"></a><p class="title"><b>Table 1.34. Parameters</b></p>
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<a name="id921796"></a><p class="title"><b>Table 1.34. Parameters</b></p>
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<div class="table-contents"><table class="table" summary="Parameters">
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<colgroup>
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<col>
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@ -110,7 +110,7 @@
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</table></div>
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</div>
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<br class="table-break"><a name="fusion.sequence.intrinsic.metafunctions.at_key.expression_semantics"></a><h6>
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<a name="id814856"></a>
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<a name="id921916"></a>
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<a class="link" href="at_key.html#fusion.sequence.intrinsic.metafunctions.at_key.expression_semantics">Expression
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Semantics</a>
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</h6>
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@ -126,14 +126,14 @@
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<code class="computeroutput"><span class="identifier">Seq</span></code>.
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</p>
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<a name="fusion.sequence.intrinsic.metafunctions.at_key.header"></a><h6>
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<a name="id814999"></a>
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<a name="id922009"></a>
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<a class="link" href="at_key.html#fusion.sequence.intrinsic.metafunctions.at_key.header">Header</a>
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</h6>
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<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">sequence</span><span class="special">/</span><span class="identifier">intrinsic</span><span class="special">/</span><span class="identifier">at_key</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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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">include</span><span class="special">/</span><span class="identifier">at_key</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.sequence.intrinsic.metafunctions.at_key.example"></a><h6>
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<a name="id815164"></a>
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<a name="id922124"></a>
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<a class="link" href="at_key.html#fusion.sequence.intrinsic.metafunctions.at_key.example">Example</a>
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</h6>
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<pre class="programlisting"><span class="keyword">typedef</span> <a class="link" href="../../../container/map.html" title="map"><code class="computeroutput"><span class="identifier">map</span></code></a><span class="special"><</span><a class="link" href="../../../support/pair.html" title="pair"><code class="computeroutput"><span class="identifier">pair</span></code></a><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">>,</span> <a class="link" href="../../../support/pair.html" title="pair"><code class="computeroutput"><span class="identifier">pair</span></code></a><span class="special"><</span><span class="keyword">char</span><span class="special">,</span> <span class="keyword">char</span><span class="special">>,</span> <a class="link" href="../../../support/pair.html" title="pair"><code class="computeroutput"><span class="identifier">pair</span></code></a><span class="special"><</span><span class="keyword">double</span><span class="special">,</span> <span class="keyword">char</span><span class="special">></span> <span class="special">></span> <span class="identifier">mymap</span><span class="special">;</span>
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@ -141,7 +141,7 @@
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</pre>
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<div class="footnotes">
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<br><hr width="100" align="left">
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<div class="footnote"><p><sup>[<a id="ftn.id814477" href="#id814477" class="para">8</a>] </sup>
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<div class="footnote"><p><sup>[<a name="ftn.id921642" href="#id921642" class="para">8</a>] </sup>
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<a class="link" href="at_key.html" title="at_key"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">at_key</span></code></a> reflects the actual
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return type of the function <a class="link" href="../functions/at_key.html" title="at_key"><code class="computeroutput"><span class="identifier">at_key</span></code></a>. <span class="underline">_sequence</span>_s
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typically return references to its elements via the <a class="link" href="../functions/at_key.html" title="at_key"><code class="computeroutput"><span class="identifier">at_key</span></code></a> function. If you want
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