boost_1_45_0/libs/mpl/doc/refmanual/variadic-sequence.html - nest-learning-thermostat/5.0/boost - Git at Google

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 <td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./sequences.html" class="navigation-link">Sequences</a> / <a href="./concepts.html" class="navigation-link">Concepts</a> / <a href="./variadic-sequence.html" class="navigation-link">Variadic Sequence</a></td>
 </tr></table><div class="header-separator"></div>
 <div class="section" id="variadic-sequence">
 <h1><a class="toc-backref" href="./concepts.html#id1404">Variadic Sequence</a></h1>
 <div class="section" id="id45">
 <h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
 <p>A <a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a> is a member of a family of sequence classes with both
 <em>variadic</em> and <em>numbered</em> forms. If <tt class="literal"><span class="pre">seq</span></tt> is a generic name for some
 <a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a>, its <em>variadic form</em> allows us to specify a sequence of
 <em>n</em> elements <em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>, for any <em>n</em> from 0 up to a
 <a class="reference internal" href="./configuration.html">preprocessor-configurable limit</a> <tt class="literal"><span class="pre">BOOST_MPL_LIMIT_</span></tt><em>seq</em><tt class="literal"><span class="pre">_SIZE</span></tt>,
 using the following notation:</p>
 <blockquote>
 <div class="line-block">
 <div class="line"><tt class="literal"><span class="pre">seq&lt;</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">&gt;</span></tt></div>
 </div>
 </blockquote>
 <p>By contrast, each <em>numbered</em> sequence form accepts the exact number of elements
 that is encoded in the name of the corresponding class template:</p>
 <blockquote>
 <div class="line-block">
 <div class="line"><tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre">&lt;</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">&gt;</span></tt></div>
 </div>
 </blockquote>
 <p>For numbered forms, there is no predefined top limit for <em>n</em>, aside from compiler
 limitations on the number of template parameters.</p>
 <!-- The variadic form of sequence ``seq`` is defined in
 ``<boost/mpl/``\ *seq*\ ``.hpp>`` header.
 The numbered forms are defined in batches of 10. -->
 </div>
 <div class="section" id="id47">
 <h3><a class="subsection-title" href="#expression-requirements" name="expression-requirements">Expression requirements</a></h3>
 <p>In the following table and subsequent specifications, <tt class="literal"><span class="pre">seq</span></tt> is a placeholder token for the actual
 <a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a> name.</p>
 <table border="1" class="docutils table">
 <colgroup>
 <col width="35%" />
 <col width="30%" />
 <col width="35%" />
 </colgroup>
 <thead valign="bottom">
 <tr><th class="head">Expression</th>
 <th class="head">Type</th>
 <th class="head">Complexity</th>
 </tr>
 </thead>
 <tbody valign="top">
 <tr><td><tt class="literal"><span class="pre">seq&lt;</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">&gt;</span></tt></td>
 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
 <td>Amortized constant time</td>
 </tr>
 <tr><td><tt class="literal"><span class="pre">seq&lt;</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">&gt;::type</span></tt></td>
 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
 <td>Amortized constant time</td>
 </tr>
 <tr><td><tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre">&lt;</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">&gt;</span></tt></td>
 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
 <td>Amortized constant time</td>
 </tr>
 <tr><td><tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre">&lt;</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">&gt;::type</span></tt></td>
 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
 <td>Amortized constant time</td>
 </tr>
 </tbody>
 </table>
 </div>
 <div class="section" id="id48">
 <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
 <pre class="literal-block">
 typedef seq&lt;<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>&gt; s;
 typedef seq<em>n</em>&lt;<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>&gt; s;
 </pre>
 <table class="docutils field-list" frame="void" rules="none">
 <col class="field-name" />
 <col class="field-body" />
 <tbody valign="top">
 <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal"><span class="pre">s</span></tt> is a sequence of elements <em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>.</td>
 </tr>
 <tr class="field"><th class="field-name">Postcondition:</th><td class="field-body"><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span> <span class="pre">==</span> <span class="pre">n</span></tt>.<!-- FIXME .. parsed-literal::

 BOOST_MPL_ASSERT((|is_same|\< at_c<v,0>::type,\ |t1| >));
 BOOST_MPL_ASSERT((|is_same|\< at_c<v,1>::type,\ |t2| >));
 ...
 BOOST_MPL_ASSERT((|is_same|\< at_c<v,\ *n*>::type,\ |tn| >)); -->
 </td>
 </tr>
 </tbody>
 </table>
 <!-- .......................................................................... -->
 <pre class="literal-block">
 typedef seq&lt;<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>&gt;::type s;
 typedef seq<em>n</em>&lt;<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>&gt;::type s;
 </pre>
 <table class="docutils field-list" frame="void" rules="none">
 <col class="field-name" />
 <col class="field-body" />
 <tbody valign="top">
 <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal"><span class="pre">s</span></tt> is identical to <tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre">&lt;</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub> <tt class="literal"><span class="pre">&gt;</span></tt>.</td>
 </tr>
 <tr class="field"><th class="field-name">Postcondition:</th><td class="field-body"><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span> <span class="pre">==</span> <span class="pre">n</span></tt>.</td>
 </tr>
 </tbody>
 </table>
 </div>
 <div class="section" id="id49">
 <h3><a class="subsection-title" href="#models" name="models">Models</a></h3>
 <ul class="simple">
 <li><a class="reference internal" href="./vector.html">vector</a></li>
 <li><a class="reference internal" href="./list.html">list</a></li>
 <li><a class="reference internal" href="./map.html">map</a></li>
 </ul>
 </div>
 <div class="section" id="id50">
 <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
 <p><a class="reference internal" href="./sequences.html">Sequences</a>, <a class="reference internal" href="./configuration.html">Configuration</a>, <a class="reference internal" href="./integral-sequence-wrapper.html">Integral Sequence Wrapper</a></p>
 </div>
 </div>

 <div class="footer-separator"></div>
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 <td><div class="copyright-footer"><div class="copyright">Copyright ©  2001-2009 Aleksey Gurtovoy and David Abrahams</div>
 Distributed under the Boost Software License, Version 1.0. (See accompanying
 file LICENSE_1_0.txt or copy at <a class="reference external" href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</div></td></tr></table></body>
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	<title>The MPL Reference Manual: Variadic Sequence</title>
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	<td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./sequences.html" class="navigation-link">Sequences</a> / <a href="./concepts.html" class="navigation-link">Concepts</a> / <a href="./variadic-sequence.html" class="navigation-link">Variadic Sequence</a></td>
	</tr></table><div class="header-separator"></div>
	<div class="section" id="variadic-sequence">
	<h1><a class="toc-backref" href="./concepts.html#id1404">Variadic Sequence</a></h1>
	<div class="section" id="id45">
	<h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
	<p>A <a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a> is a member of a family of sequence classes with both
	<em>variadic</em> and <em>numbered</em> forms. If <tt class="literal"><span class="pre">seq</span></tt> is a generic name for some
	<a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a>, its <em>variadic form</em> allows us to specify a sequence of
	<em>n</em> elements <em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>, for any <em>n</em> from 0 up to a
	<a class="reference internal" href="./configuration.html">preprocessor-configurable limit</a> <tt class="literal"><span class="pre">BOOST_MPL_LIMIT_</span></tt><em>seq</em><tt class="literal"><span class="pre">_SIZE</span></tt>,
	using the following notation:</p>
	<blockquote>
	<div class="line-block">
	<div class="line"><tt class="literal"><span class="pre">seq<</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">></span></tt></div>
	</div>
	</blockquote>
	<p>By contrast, each <em>numbered</em> sequence form accepts the exact number of elements
	that is encoded in the name of the corresponding class template:</p>
	<blockquote>
	<div class="line-block">
	<div class="line"><tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre"><</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">></span></tt></div>
	</div>
	</blockquote>
	<p>For numbered forms, there is no predefined top limit for <em>n</em>, aside from compiler
	limitations on the number of template parameters.</p>
	<!-- The variadic form of sequence ``seq`` is defined in
	``<boost/mpl/``\ seq\ ``.hpp>`` header.
	The numbered forms are defined in batches of 10. -->
	</div>
	<div class="section" id="id47">
	<h3><a class="subsection-title" href="#expression-requirements" name="expression-requirements">Expression requirements</a></h3>
	<p>In the following table and subsequent specifications, <tt class="literal"><span class="pre">seq</span></tt> is a placeholder token for the actual
	<a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a> name.</p>
	<table border="1" class="docutils table">
	<colgroup>
	<col width="35%" />
	<col width="30%" />
	<col width="35%" />
	</colgroup>
	<thead valign="bottom">
	<tr><th class="head">Expression</th>
	<th class="head">Type</th>
	<th class="head">Complexity</th>
	</tr>
	</thead>
	<tbody valign="top">
	<tr><td><tt class="literal"><span class="pre">seq<</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">></span></tt></td>
	<td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
	<td>Amortized constant time</td>
	</tr>
	<tr><td><tt class="literal"><span class="pre">seq<</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">>::type</span></tt></td>
	<td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
	<td>Amortized constant time</td>
	</tr>
	<tr><td><tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre"><</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">></span></tt></td>
	<td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
	<td>Amortized constant time</td>
	</tr>
	<tr><td><tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre"><</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">>::type</span></tt></td>
	<td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
	<td>Amortized constant time</td>
	</tr>
	</tbody>
	</table>
	</div>
	<div class="section" id="id48">
	<h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
	<pre class="literal-block">
	typedef seq<<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>> s;
	typedef seq<em>n</em><<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>> s;
	</pre>
	<table class="docutils field-list" frame="void" rules="none">
	<col class="field-name" />
	<col class="field-body" />
	<tbody valign="top">
	<tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal"><span class="pre">s</span></tt> is a sequence of elements <em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>.</td>
	</tr>
	<tr class="field"><th class="field-name">Postcondition:</th><td class="field-body"><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><s>::value</span> <span class="pre">==</span> <span class="pre">n</span></tt>.<!-- FIXME .. parsed-literal::

	BOOST_MPL_ASSERT((\|is_same\|\< at_c<v,0>::type,\ \|t1\| >));
	BOOST_MPL_ASSERT((\|is_same\|\< at_c<v,1>::type,\ \|t2\| >));
	...
	BOOST_MPL_ASSERT((\|is_same\|\< at_c<v,\ n>::type,\ \|tn\| >)); -->
	</td>
	</tr>
	</tbody>
	</table>
	<!-- .......................................................................... -->
	<pre class="literal-block">
	typedef seq<<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>>::type s;
	typedef seq<em>n</em><<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>>::type s;
	</pre>
	<table class="docutils field-list" frame="void" rules="none">
	<col class="field-name" />
	<col class="field-body" />
	<tbody valign="top">
	<tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal"><span class="pre">s</span></tt> is identical to <tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre"><</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub> <tt class="literal"><span class="pre">></span></tt>.</td>
	</tr>
	<tr class="field"><th class="field-name">Postcondition:</th><td class="field-body"><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><s>::value</span> <span class="pre">==</span> <span class="pre">n</span></tt>.</td>
	</tr>
	</tbody>
	</table>
	</div>
	<div class="section" id="id49">
	<h3><a class="subsection-title" href="#models" name="models">Models</a></h3>
	<ul class="simple">
	<li><a class="reference internal" href="./vector.html">vector</a></li>
	<li><a class="reference internal" href="./list.html">list</a></li>
	<li><a class="reference internal" href="./map.html">map</a></li>
	</ul>
	</div>
	<div class="section" id="id50">
	<h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
	<p><a class="reference internal" href="./sequences.html">Sequences</a>, <a class="reference internal" href="./configuration.html">Configuration</a>, <a class="reference internal" href="./integral-sequence-wrapper.html">Integral Sequence Wrapper</a></p>
	</div>
	</div>

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	<td><div class="copyright-footer"><div class="copyright">Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</div>
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