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Eric Niebler 48b5e30df8 Merged revisions 42067-42179 via svnmerge from 
https://svn.boost.org/svn/boost/trunk

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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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<div class="section" lang="en">
<div class="titlepage"><div><div><h3 class="title">
<a name="fusion.extension.iterator_facade"></a><a href="iterator_facade.html" title="Iterator Facade">Iterator Facade</a></h3></div></div></div>
<a name="fusion.extension.iterator_facade.description"></a><h4>
<a name="id650855"></a>
<a href="iterator_facade.html#fusion.extension.iterator_facade.description">Description</a>
</h4>
<p>
The <a href="iterator_facade.html" title="Iterator Facade"><tt class="computeroutput"><span class="identifier">iterator_facade</span></tt></a>
template provides an intrusive mechanism for producing a conforming Fusion
iterator.
</p>
<a name="fusion.extension.iterator_facade.synopsis"></a><h4>
<a name="id650904"></a>
<a href="iterator_facade.html#fusion.extension.iterator_facade.synopsis">Synopsis</a>
</h4>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Derived</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">TravesalTag</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">iterator_facade</span><span class="special">;</span>
</pre>
<a name="fusion.extension.iterator_facade.usage"></a><h4>
<a name="id650999"></a>
<a href="iterator_facade.html#fusion.extension.iterator_facade.usage">Usage</a>
</h4>
<p>
The user of iterator_facade derives his iterator type from a specialization
of iterator_facade and passes the derived iterator type as the first template
parameter. The second template parameter should be the traversal category
of the iterator being implemented.
</p>
<p>
The user must the implement the key expressions required by their iterator
type.
</p>
<div class="table">
<a name="id651025"></a><p class="title"><b>Table 1.93. Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Name
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span></tt>, <tt class="computeroutput"><span class="identifier">It</span></tt>, <tt class="computeroutput"><span class="identifier">It1</span></tt>,
<tt class="computeroutput"><span class="identifier">It2</span></tt>
</p>
</td>
<td>
<p>
A type derived from <a href="iterator_facade.html" title="Iterator Facade"><tt class="computeroutput"><span class="identifier">iterator_facade</span></tt></a>
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">N</span></tt>
</p>
</td>
<td>
<p>
An <a href="http://www.boost.org/libs/mpl/doc/refmanual/integral-constant.html" target="_top">MPL
Integral Constant</a>
</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="table">
<a name="id651183"></a><p class="title"><b>Table 1.94. Key Expressions</b></p>
<table class="table" summary="Key Expressions">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Result
</p>
</th>
<th>
<p>
Default
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">value_of</span><span class="special">&lt;</span><span class="identifier">It</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
The element stored at iterator position <tt class="computeroutput"><span class="identifier">It</span></tt>
</p>
</td>
<td>
<p>
None
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">deref</span><span class="special">&lt;</span><span class="identifier">It</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
The type returned when dereferencing an iterator of type <tt class="computeroutput"><span class="identifier">It</span></tt>
</p>
</td>
<td>
<p>
None
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">deref</span><span class="special">&lt;</span><span class="identifier">It</span><span class="special">&gt;::</span><span class="identifier">call</span><span class="special">(</span><span class="identifier">it</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Dereferences iterator <tt class="computeroutput"><span class="identifier">it</span></tt>
</p>
</td>
<td>
<p>
None
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">next</span><span class="special">&lt;</span><span class="identifier">It</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
The type of the next element from <tt class="computeroutput"><span class="identifier">It</span></tt>
</p>
</td>
<td>
<p>
None
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">next</span><span class="special">&lt;</span><span class="identifier">It</span><span class="special">&gt;::</span><span class="identifier">call</span><span class="special">(</span><span class="identifier">it</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
The next iterator after <tt class="computeroutput"><span class="identifier">it</span></tt>
</p>
</td>
<td>
<p>
None
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">prior</span><span class="special">&lt;</span><span class="identifier">It</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
The type of the next element from <tt class="computeroutput"><span class="identifier">It</span></tt>
</p>
</td>
<td>
<p>
None
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">prior</span><span class="special">&lt;</span><span class="identifier">It</span><span class="special">&gt;::</span><span class="identifier">call</span><span class="special">(</span><span class="identifier">it</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
The next iterator after <tt class="computeroutput"><span class="identifier">it</span></tt>
</p>
</td>
<td>
<p>
None
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">advance</span><span class="special">&lt;</span><span class="identifier">It</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>
The type of an iterator advanced <tt class="computeroutput"><span class="identifier">N</span></tt>
elements from <tt class="computeroutput"><span class="identifier">It</span></tt>
</p>
</td>
<td>
<p>
Implemented in terms of <tt class="computeroutput"><span class="identifier">next</span></tt>
and <tt class="computeroutput"><span class="identifier">prior</span></tt>
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">advance</span><span class="special">&lt;</span><span class="identifier">It</span><span class="special">,</span> <span class="identifier">N</span><span class="special">&gt;::</span><span class="identifier">call</span><span class="special">(</span><span class="identifier">it</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
An iterator advanced <tt class="computeroutput"><span class="identifier">N</span></tt>
elements from <tt class="computeroutput"><span class="identifier">it</span></tt>
</p>
</td>
<td>
<p>
Implemented in terms of <tt class="computeroutput"><span class="identifier">next</span></tt>
and <tt class="computeroutput"><span class="identifier">prior</span></tt>
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">distance</span><span class="special">&lt;</span><span class="identifier">It1</span><span class="special">,</span> <span class="identifier">It2</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
The distance between iterators of type <tt class="computeroutput"><span class="identifier">It1</span></tt>
and <tt class="computeroutput"><span class="identifier">It2</span></tt> as an <a href="http://www.boost.org/libs/mpl/doc/refmanual/integral-constant.html" target="_top">MPL
Integral Constant</a>
</p>
</td>
<td>
<p>
None
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">distance</span><span class="special">&lt;</span><span class="identifier">It1</span><span class="special">,</span> <span class="identifier">It2</span><span class="special">&gt;::</span><span class="identifier">call</span><span class="special">(</span><span class="identifier">it1</span><span class="special">,</span> <span class="identifier">it2</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
The distance between iterator <tt class="computeroutput"><span class="identifier">it1</span></tt>
and <tt class="computeroutput"><span class="identifier">it2</span></tt>
</p>
</td>
<td>
<p>
None
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">equal_to</span><span class="special">&lt;</span><span class="identifier">It1</span><span class="special">,</span> <span class="identifier">It2</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
The distance between iterators of type <tt class="computeroutput"><span class="identifier">It1</span></tt>
and <tt class="computeroutput"><span class="identifier">It2</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">same_type</span><span class="special">&lt;</span><span class="identifier">It1</span><span class="special">,</span> <span class="identifier">It2</span><span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">iterator</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">equal_to</span><span class="special">&lt;</span><span class="identifier">It1</span><span class="special">,</span> <span class="identifier">It2</span><span class="special">&gt;::</span><span class="identifier">call</span><span class="special">(</span><span class="identifier">it1</span><span class="special">,</span> <span class="identifier">it2</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
The distance between iterators <tt class="computeroutput"><span class="identifier">it1</span></tt>
and <tt class="computeroutput"><span class="identifier">it2</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">same_type</span><span class="special">&lt;</span><span class="identifier">It1</span><span class="special">,</span> <span class="identifier">It2</span><span class="special">&gt;::</span><span class="identifier">type</span><span class="special">()</span></tt>
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.extension.iterator_facade.header"></a><h4>
<a name="id652742"></a>
<a href="iterator_facade.html#fusion.extension.iterator_facade.header">Header</a>
</h4>
<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">iterator</span><span class="special">/</span><span class="identifier">iterator_facade</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">iterator_facade</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.extension.iterator_facade.example"></a><h4>
<a name="id652901"></a>
<a href="iterator_facade.html#fusion.extension.iterator_facade.example">Example</a>
</h4>
<p>
A full worked example using <a href="iterator_facade.html" title="Iterator Facade"><tt class="computeroutput"><span class="identifier">iterator_facade</span></tt></a> is provided in triple.cpp
in the extension examples.
</p>
</div>
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<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>
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