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<title>repetitive_view</title>
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<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="fusion.view.repetitive_view"></a><a class="link" href="repetitive_view.html" title="repetitive_view">repetitive_view</a>
</h3></div></div></div>
<h5>
<a name="fusion.view.repetitive_view.h0"></a>
<span><a name="fusion.view.repetitive_view.description"></a></span><a class="link" href="repetitive_view.html#fusion.view.repetitive_view.description">Description</a>
</h5>
<p>
<code class="computeroutput"><span class="identifier">repetitive_view</span></code> presents
a view which iterates over a given <a class="link" href="../sequence.html" title="Sequence">Sequence</a>
repeatedly. Because a <code class="computeroutput"><span class="identifier">repetitive_view</span></code>
has infinite length, it can only be used when some external condition determines
the end. Thus, initializing a fixed length sequence with a <code class="computeroutput"><span class="identifier">repetitive_view</span></code> is okay, but printing a
<code class="computeroutput"><span class="identifier">repetitive_view</span></code> to <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span></code>
is not.
</p>
<h5>
<a name="fusion.view.repetitive_view.h1"></a>
<span><a name="fusion.view.repetitive_view.header"></a></span><a class="link" href="repetitive_view.html#fusion.view.repetitive_view.header">Header</a>
</h5>
<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">view</span><span class="special">/</span><span class="identifier">repetitive_view</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
<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">repetitive_view</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
</pre>
<h5>
<a name="fusion.view.repetitive_view.h2"></a>
<span><a name="fusion.view.repetitive_view.synopsis"></a></span><a class="link" href="repetitive_view.html#fusion.view.repetitive_view.synopsis">Synopsis</a>
</h5>
<pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">></span>
<span class="keyword">struct</span> <span class="identifier">repetitive_view</span><span class="special">;</span>
</pre>
<h5>
<a name="fusion.view.repetitive_view.h3"></a>
<span><a name="fusion.view.repetitive_view.template_parameters"></a></span><a class="link" href="repetitive_view.html#fusion.view.repetitive_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">Sequence</span></code>
</p>
</td>
<td>
<p>
An arbitrary Fusion <a class="link" href="../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
Sequence</a>
</p>
</td>
<td>
</td>
</tr></tbody>
</table></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><code class="computeroutput"><span class="identifier">RV</span></code></span></dt>
<dd><p>
A <code class="computeroutput"><span class="identifier">repetitive_view</span></code> type
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">s</span></code></span></dt>
<dd><p>
An instance of <code class="computeroutput"><span class="identifier">Sequences</span></code>
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">rv</span></code>, <code class="computeroutput"><span class="identifier">rv1</span></code>, <code class="computeroutput"><span class="identifier">rv2</span></code></span></dt>
<dd><p>
Instances of <code class="computeroutput"><span class="identifier">RV</span></code>
</p></dd>
</dl>
</div>
<h5>
<a name="fusion.view.repetitive_view.h4"></a>
<span><a name="fusion.view.repetitive_view.expression_semantics"></a></span><a class="link" href="repetitive_view.html#fusion.view.repetitive_view.expression_semantics">Expression
Semantics</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Return Type
</p>
</th>
<th>
<p>
Semantics
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">RV</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></code>
</p>
</td>
<td>
</td>
<td>
<p>
Creates an <code class="computeroutput"><span class="identifier">repetitive_view</span></code>
given the underlying sequence.
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">RV</span><span class="special">(</span><span class="identifier">rv1</span><span class="special">)</span></code>
</p>
</td>
<td>
</td>
<td>
<p>
Copy constructs an <code class="computeroutput"><span class="identifier">repetitive_view</span></code>
from another <code class="computeroutput"><span class="identifier">repetitive_view</span></code>,
<code class="computeroutput"><span class="identifier">rv1</span></code>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">rv1</span> <span class="special">=</span>
<span class="identifier">rv2</span></code>
</p>
</td>
<td>
</td>
<td>
<p>
Assigns to a <code class="computeroutput"><span class="identifier">repetitive_view</span></code>,
<code class="computeroutput"><span class="identifier">rv1</span></code>, from another
<code class="computeroutput"><span class="identifier">repetitive_view</span></code>,
<code class="computeroutput"><span class="identifier">rv2</span></code>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><a class="link" href="../sequence/intrinsic/functions/begin.html" title="begin"><code class="computeroutput"><span class="identifier">begin</span></code></a><span class="special">(</span><span class="identifier">rv</span><span class="special">)</span></code>
</p>
</td>
<td>
<p>
<a class="link" href="../iterator/concepts/forward_iterator.html" title="Forward Iterator">Forward
Iterator</a>
</p>
</td>
<td>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><a class="link" href="../sequence/intrinsic/functions/end.html" title="end"><code class="computeroutput"><span class="identifier">end</span></code></a><span class="special">(</span><span class="identifier">rv</span><span class="special">)</span></code>
</p>
</td>
<td>
<p>
<a class="link" href="../iterator/concepts/forward_iterator.html" title="Forward Iterator">Forward
Iterator</a>
</p>
</td>
<td>
<p>
Creates an unreachable iterator (since the sequnce is infinite)
</p>
</td>
</tr>
</tbody>
</table></div>
<h5>
<a name="fusion.view.repetitive_view.h5"></a>
<span><a name="fusion.view.repetitive_view.result_type_expressions"></a></span><a class="link" href="repetitive_view.html#fusion.view.repetitive_view.result_type_expressions">Result
Type Expressions</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup><col></colgroup>
<thead><tr><th>
<p>
Expression
</p>
</th></tr></thead>
<tbody>
<tr><td>
<p>
<code class="computeroutput"><a class="link" href="../sequence/intrinsic/metafunctions/begin.html" title="begin"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">begin</span></code></a><span class="special"><</span><span class="identifier">RV</span><span class="special">>::</span><span class="identifier">type</span></code>
</p>
</td></tr>
<tr><td>
<p>
<code class="computeroutput"><a class="link" href="../sequence/intrinsic/metafunctions/end.html" title="end"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">end</span></code></a><span class="special"><</span><span class="identifier">RV</span><span class="special">>::</span><span class="identifier">type</span></code>
</p>
</td></tr>
</tbody>
</table></div>
<h5>
<a name="fusion.view.repetitive_view.h6"></a>
<span><a name="fusion.view.repetitive_view.example"></a></span><a class="link" href="repetitive_view.html#fusion.view.repetitive_view.example">Example</a>
</h5>
<pre class="programlisting"><span class="keyword">typedef</span> <a class="link" href="../container/vector.html" title="vector"><code class="computeroutput"><span class="identifier">vector</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> <span class="keyword">double</span><span class="special">></span> <span class="identifier">vec1</span><span class="special">;</span>
<span class="keyword">typedef</span> <a class="link" href="../container/vector.html" title="vector"><code class="computeroutput"><span class="identifier">vector</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> <span class="keyword">double</span><span class="special">,</span> <span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">></span> <span class="identifier">vec2</span><span class="special">;</span>
<span class="identifier">vec1</span> <span class="identifier">v1</span><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="char">'c'</span><span class="special">,</span> <span class="number">2.0</span><span class="special">);</span>
<span class="identifier">vec2</span> <span class="identifier">v2</span><span class="special">(</span><span class="identifier">repetitive_view</span><span class="special"><</span><span class="identifier">vec1</span><span class="special">>(</span><span class="identifier">v1</span><span class="special">));</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">v2</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> <span class="comment">// 1, 'c', 2.0, 1, 'c'</span>
</pre>
</div>
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<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright © 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>
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