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Eric Niebler 48b5e30df8 Merged revisions 42067-42179 via svnmerge from 
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  r42067 | johnmaddock | 2007-12-15 04:32:18 -0800 (Sat, 15 Dec 2007) | 1 line
  
  MSVC warning suppression.
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  r42069 | bemandawes | 2007-12-15 06:26:16 -0800 (Sat, 15 Dec 2007) | 1 line
  
  Correct misspelling of library name
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  r42074 | johnmaddock | 2007-12-15 09:10:03 -0800 (Sat, 15 Dec 2007) | 1 line
  
  Fix error messages so they work with Boost.Format.
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  r42076 | johnmaddock | 2007-12-15 09:36:31 -0800 (Sat, 15 Dec 2007) | 1 line
  
  Trivial patches to silence MSVC warnings.
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  r42078 | johnmaddock | 2007-12-15 10:29:29 -0800 (Sat, 15 Dec 2007) | 1 line
  
  Disable long double tests if there's no long double support.
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  r42080 | johnmaddock | 2007-12-15 10:49:13 -0800 (Sat, 15 Dec 2007) | 1 line
  
  Yet another MSVC warning suppression.
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  r42082 | bgubenko | 2007-12-15 10:53:01 -0800 (Sat, 15 Dec 2007) | 1 line
  
  mark up Boost.Test tests for Linux ia64 gcc; make Boost.Interprocess unsupported on Linux ia64 gcc and PA-RISC
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  r42086 | anthonyw | 2007-12-15 14:34:30 -0800 (Sat, 15 Dec 2007) | 1 line
  
  added timed_wait overloads that take a duration
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  r42087 | anthonyw | 2007-12-15 14:36:43 -0800 (Sat, 15 Dec 2007) | 1 line
  
  explicit move functions for threads, with a test
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  r42105 | andreas_huber69 | 2007-12-16 06:58:24 -0800 (Sun, 16 Dec 2007) | 1 line
  
  Removed markup for now passing Sandia tests.
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  r42112 | bemandawes | 2007-12-16 14:39:32 -0800 (Sun, 16 Dec 2007) | 1 line
  
  Add intel-win-10.0 as required
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  r42116 | djowel | 2007-12-17 01:27:42 -0800 (Mon, 17 Dec 2007) | 1 line
  
  fixed documentation bug
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  r42117 | anthonyw | 2007-12-17 03:24:13 -0800 (Mon, 17 Dec 2007) | 1 line
  
  Updated move function test to be fair to Borland
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  r42118 | anthonyw | 2007-12-17 04:52:50 -0800 (Mon, 17 Dec 2007) | 1 line
  
  boost::move support for locks
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  r42119 | chris_kohlhoff | 2007-12-17 05:04:30 -0800 (Mon, 17 Dec 2007) | 2 lines
  
  Fixes for older HP-UX.
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  r42120 | chris_kohlhoff | 2007-12-17 05:08:10 -0800 (Mon, 17 Dec 2007) | 2 lines
  
  Bump version number.
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  r42121 | chris_kohlhoff | 2007-12-17 05:17:46 -0800 (Mon, 17 Dec 2007) | 2 lines
  
  Documentation fixes.
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  r42127 | bgubenko | 2007-12-17 10:06:11 -0800 (Mon, 17 Dec 2007) | 1 line
  
  markup test library test prg_exec_fail2 for PA-RISC
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  r42138 | johnmaddock | 2007-12-18 08:37:23 -0800 (Tue, 18 Dec 2007) | 1 line
  
  Fixes #1525.
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  r42141 | marshall | 2007-12-18 10:33:55 -0800 (Tue, 18 Dec 2007) | 1 line
  
  Patches to fixe #1423 and #1473
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  r42145 | fmhess | 2007-12-18 12:14:01 -0800 (Tue, 18 Dec 2007) | 4 lines
  
  Prevented "classname"/"methodname"/etc. elements inside "type" elements 
  inside "static-constant" elements from getting dropped.
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  r42164 | djowel | 2007-12-19 02:33:14 -0800 (Wed, 19 Dec 2007) | 1 line
  
  bug fix for end_impl.
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  r42165 | djowel | 2007-12-19 02:33:39 -0800 (Wed, 19 Dec 2007) | 1 line
  
  bug fix for end_impl. (test)
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  r42166 | anthonyw | 2007-12-19 02:39:45 -0800 (Wed, 19 Dec 2007) | 1 line
  
  Updated thread ID, and added tests
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  r42167 | djowel | 2007-12-19 02:42:04 -0800 (Wed, 19 Dec 2007) | 1 line
  
  tweakbug fix for end_impl (tweak).
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  r42168 | anthonyw | 2007-12-19 02:45:01 -0800 (Wed, 19 Dec 2007) | 1 line
  
  Implement hardware_concurrency for pthread
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  r42169 | johnmaddock | 2007-12-19 08:41:54 -0800 (Wed, 19 Dec 2007) | 1 line
  
  Fix graph title.
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[SVN r42185]
2007-12-19 22:46:16 +00:00

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<html>
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<title>Random
Access Sequence</title>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.sequence.concepts.random_access_sequence"></a><a href="random_access_sequence.html" title="Random
Access Sequence">Random
Access Sequence</a></h4></div></div></div>
<a name="fusion.sequence.concepts.random_access_sequence.description"></a><h5>
<a name="id494377"></a>
<a href="random_access_sequence.html#fusion.sequence.concepts.random_access_sequence.description">Description</a>
</h5>
<p>
A Random Access Sequence is a <a href="bidirectional_sequence.html" title="Bidirectional
Sequence">Bidirectional
Sequence</a> whose iterators model <a href="../../iterator/concepts/random_access_iterator.html" title="Random
Access Iterator">Random
Access Iterator</a>. It guarantees constant time access to arbitrary
sequence elements.
</p>
<a name="fusion.sequence.concepts.random_access_sequence.refinement_of"></a><h5>
<a name="id494429"></a>
<a href="random_access_sequence.html#fusion.sequence.concepts.random_access_sequence.refinement_of">Refinement
of</a>
</h5>
<p>
<a href="bidirectional_sequence.html" title="Bidirectional
Sequence">Bidirectional
Sequence</a>
</p>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">s</span></tt></span></dt>
<dd><p>
A Random Access Sequence
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">S</span></tt></span></dt>
<dd><p>
A Random Access Sequence type
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">N</span></tt></span></dt>
<dd><p>
An <a href="http://www.boost.org/libs/mpl/doc/refmanual/integral-constant.html" target="_top">MPL
Integral Constant</a>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">o</span></tt></span></dt>
<dd><p>
An arbitrary object
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">e</span></tt></span></dt>
<dd><p>
A Sequence element
</p></dd>
</dl>
</div>
<a name="fusion.sequence.concepts.random_access_sequence.valid_expressions"></a><h5>
<a name="id494600"></a>
<a href="random_access_sequence.html#fusion.sequence.concepts.random_access_sequence.valid_expressions">Valid
Expressions</a>
</h5>
<p>
In addition to the requirements defined in <a href="bidirectional_sequence.html" title="Bidirectional
Sequence">Bidirectional
Sequence</a>, for any Random Access Sequence the following must be met:
</p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Return type
</p>
</th>
<th>
<p>
Type Requirements
</p>
</th>
<th>
<p>
Runtime Complexity
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><a href="../intrinsic/functions/begin.html" title="begin"><tt class="computeroutput"><span class="identifier">begin</span></tt></a><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
<a href="../../iterator/concepts/random_access_iterator.html" title="Random
Access Iterator">Random
Access Iterator</a>
</p>
</td>
<td>
<p>
</p>
</td>
<td>
<p>
Constant
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><a href="../intrinsic/functions/end.html" title="end"><tt class="computeroutput"><span class="identifier">end</span></tt></a><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
<a href="../../iterator/concepts/random_access_iterator.html" title="Random
Access Iterator">Random
Access Iterator</a>
</p>
</td>
<td>
<p>
</p>
</td>
<td>
<p>
Constant
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><a href="../intrinsic/functions/at.html" title="at"><tt class="computeroutput"><span class="identifier">at</span></tt></a><span class="special">&lt;</span><span class="identifier">N</span><span class="special">&gt;(</span><span class="identifier">s</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
</p>
</td>
<td>
<p>
Constant
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><a href="../intrinsic/functions/at.html" title="at"><tt class="computeroutput"><span class="identifier">at</span></tt></a><span class="special">&lt;</span><span class="identifier">N</span><span class="special">&gt;(</span><span class="identifier">s</span><span class="special">)</span>
<span class="special">=</span> <span class="identifier">o</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
<tt class="computeroutput"><span class="identifier">s</span></tt> is mutable and
<tt class="computeroutput"><span class="identifier">e</span> <span class="special">=</span>
<span class="identifier">o</span></tt>, where <tt class="computeroutput"><span class="identifier">e</span></tt> is the first element in the
sequence, is a valid expression.
</p>
</td>
<td>
<p>
Constant
</p>
</td>
</tr>
</tbody>
</table></div>
<a name="fusion.sequence.concepts.random_access_sequence.result_type_expressions"></a><h5>
<a name="id495059"></a>
<a href="random_access_sequence.html#fusion.sequence.concepts.random_access_sequence.result_type_expressions">Result
Type Expressions</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Compile Time Complexity
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><a href="../intrinsic/metafunctions/begin.html" title="begin"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">begin</span></tt></a><span class="special">&lt;</span><span class="identifier">S</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
Amortized constant time
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><a href="../intrinsic/metafunctions/end.html" title="end"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">end</span></tt></a><span class="special">&lt;</span><span class="identifier">S</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
Amortized constant time
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><a href="../intrinsic/metafunctions/at.html" title="at"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">at</span></tt></a><span class="special">&lt;</span><span class="identifier">S</span><span class="special">,</span>
<span class="identifier">N</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
Amortized constant time
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><a href="../intrinsic/metafunctions/value_at.html" title="value_at"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">value_at</span></tt></a><span class="special">&lt;</span><span class="identifier">S</span><span class="special">,</span>
<span class="identifier">N</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
Amortized constant time
</p>
</td>
</tr>
</tbody>
</table></div>
<div class="sidebar"><p>
<span class="inlinemediaobject"><img src="../../../images/note.png" alt="note"></span> <tt class="computeroutput"><a href="../intrinsic/metafunctions/at.html" title="at"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">at</span></tt></a><span class="special">&lt;</span><span class="identifier">S</span><span class="special">,</span> <span class="identifier">N</span><span class="special">&gt;</span></tt> returns the actual type returned by
<tt class="computeroutput"><a href="../intrinsic/functions/at.html" title="at"><tt class="computeroutput"><span class="identifier">at</span></tt></a><span class="special">&lt;</span><span class="identifier">N</span><span class="special">&gt;(</span><span class="identifier">s</span><span class="special">)</span></tt>. In
most cases, this is a reference. Hence, there is no way to know the exact
element type using <tt class="computeroutput"><a href="../intrinsic/metafunctions/at.html" title="at"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">at</span></tt></a><span class="special">&lt;</span><span class="identifier">S</span><span class="special">,</span> <span class="identifier">N</span><span class="special">&gt;</span></tt>.The element at <tt class="computeroutput"><span class="identifier">N</span></tt>
may actually be a reference to begin with. For this purpose, you can use
<tt class="computeroutput"><a href="../intrinsic/metafunctions/value_at.html" title="value_at"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">value_at</span></tt></a><span class="special">&lt;</span><span class="identifier">S</span><span class="special">,</span> <span class="identifier">N</span><span class="special">&gt;</span></tt>.
</p></div>
<a name="fusion.sequence.concepts.random_access_sequence.expression_semantics"></a><h5>
<a name="id495690"></a>
<a href="random_access_sequence.html#fusion.sequence.concepts.random_access_sequence.expression_semantics">Expression
Semantics</a>
</h5>
<p>
The semantics of an expression are defined only where they differ from,
or are not defined in <a href="bidirectional_sequence.html" title="Bidirectional
Sequence">Bidirectional
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>
<tt class="computeroutput"><a href="../intrinsic/functions/at.html" title="at"><tt class="computeroutput"><span class="identifier">at</span></tt></a><span class="special">&lt;</span><span class="identifier">N</span><span class="special">&gt;(</span><span class="identifier">s</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
The Nth element from the beginning of the sequence; see <a href="../intrinsic/functions/at.html" title="at"><tt class="computeroutput"><span class="identifier">at</span></tt></a>.
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.sequence.concepts.random_access_sequence.models"></a><h5>
<a name="id495851"></a>
<a href="random_access_sequence.html#fusion.sequence.concepts.random_access_sequence.models">Models</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="../../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></li>
<li><a href="../../adapted/boost__array.html" title="boost::array"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">array</span></tt></a></li>
<li><a href="../../container/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a></li>
<li><a href="../../view/reverse_view.html" title="reverse_view"><tt class="computeroutput"><span class="identifier">reverse_view</span></tt></a></li>
<li>
<a href="../../view/iterator_range.html" title="iterator_range"><tt class="computeroutput"><span class="identifier">iterator_range</span></tt></a>
(where adapted sequence is a Random Access Sequence)
</li>
<li>
<a href="../../view/transform_view.html" title="transform_view"><tt class="computeroutput"><span class="identifier">transform_view</span></tt></a>
(where adapted sequence is a Random Access Sequence)
</li>
<li>
<a href="../../view/zip_view.html" title="zip_view"><tt class="computeroutput"><span class="identifier">zip_view</span></tt></a>
(where adapted sequences are models Random Access Sequence)
</li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright © 2001-2007 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>
</tr></table>
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