libs/fusion/doc/html/fusion/view/single_view.html


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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>single_view</title>
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</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="fusion.view.single_view"></a><a class="link" href="single_view.html" title="single_view">single_view</a>
</h3></div></div></div>
<p>
        <code class="computeroutput"><span class="identifier">single_view</span></code> is a view into
        a value as a single element sequence.
      </p>
<h5>
<a name="fusion.view.single_view.h0"></a>
        <span><a name="fusion.view.single_view.header"></a></span><a class="link" href="single_view.html#fusion.view.single_view.header">Header</a>
      </h5>
<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">view</span><span class="special">/</span><span class="identifier">single_view</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
<span class="preprocessor">#include</span> <span class="special">&lt;</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">single_view</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<h5>
<a name="fusion.view.single_view.h1"></a>
        <span><a name="fusion.view.single_view.synopsis"></a></span><a class="link" href="single_view.html#fusion.view.single_view.synopsis">Synopsis</a>
      </h5>
<pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">single_view</span><span class="special">;</span>
</pre>
<h5>
<a name="fusion.view.single_view.h2"></a>
        <span><a name="fusion.view.single_view.template_parameters"></a></span><a class="link" href="single_view.html#fusion.view.single_view.template_parameters">Template
        parameters</a>
      </h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                <p>
                  Parameter
                </p>
              </th>
<th>
                <p>
                  Description
                </p>
              </th>
<th>
                <p>
                  Default
                </p>
              </th>
</tr></thead>
<tbody><tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">T</span></code>
                </p>
              </td>
<td>
                <p>
                  Any type
                </p>
              </td>
<td>
              </td>
</tr></tbody>
</table></div>
<h5>
<a name="fusion.view.single_view.h3"></a>
        <span><a name="fusion.view.single_view.model_of"></a></span><a class="link" href="single_view.html#fusion.view.single_view.model_of">Model
        of</a>
      </h5>
<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
            <a class="link" href="../sequence/concepts/random_access_sequence.html" title="Random Access Sequence">Random
            Access Sequence</a>
          </li></ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><code class="computeroutput"><span class="identifier">S</span></code></span></dt>
<dd><p>
              A <code class="computeroutput"><span class="identifier">single_view</span></code> type
            </p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">s</span></code>, <code class="computeroutput"><span class="identifier">s2</span></code></span></dt>
<dd><p>
              Instances of <code class="computeroutput"><span class="identifier">single_view</span></code>
            </p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">x</span></code></span></dt>
<dd><p>
              An instance of <code class="computeroutput"><span class="identifier">T</span></code>
            </p></dd>
</dl>
</div>
<h5>
<a name="fusion.view.single_view.h4"></a>
        <span><a name="fusion.view.single_view.expression_semantics"></a></span><a class="link" href="single_view.html#fusion.view.single_view.expression_semantics">Expression
        Semantics</a>
      </h5>
<p>
        Semantics of an expression is defined only where it differs from, or is not
        defined in <a class="link" href="../sequence/concepts/random_access_sequence.html" title="Random Access Sequence">Random
        Access Sequence</a>.
      </p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                <p>
                  Expression
                </p>
              </th>
<th>
                <p>
                  Semantics
                </p>
              </th>
</tr></thead>
<tbody>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">S</span><span class="special">(</span><span class="identifier">x</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  Creates a <code class="computeroutput"><span class="identifier">single_view</span></code>
                  from <code class="computeroutput"><span class="identifier">x</span></code>.
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">S</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  Copy constructs a <code class="computeroutput"><span class="identifier">single_view</span></code>
                  from another <code class="computeroutput"><span class="identifier">single_view</span></code>,
                  <code class="computeroutput"><span class="identifier">s</span></code>.
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">s</span> <span class="special">=</span>
                  <span class="identifier">s2</span></code>
                </p>
              </td>
<td>
                <p>
                  Assigns to a <code class="computeroutput"><span class="identifier">single_view</span></code>,
                  <code class="computeroutput"><span class="identifier">s</span></code>, from another
                  <code class="computeroutput"><span class="identifier">single_view</span></code>, <code class="computeroutput"><span class="identifier">s2</span></code>.
                </p>
              </td>
</tr>
</tbody>
</table></div>
<h5>
<a name="fusion.view.single_view.h5"></a>
        <span><a name="fusion.view.single_view.example"></a></span><a class="link" href="single_view.html#fusion.view.single_view.example">Example</a>
      </h5>
<pre class="programlisting"><span class="identifier">single_view</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">view</span><span class="special">(</span><span class="number">3</span><span class="special">);</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">view</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
</pre>
</div>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2001-2006, 2011 Joel de Guzman, Dan Marsden, Tobias
      Schwinger<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
</div></td>
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