projects / ceph.git / blame
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1 | <?xml version="1.0" encoding="utf-8" ?> |
| 2 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
| 3 | <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> | |
| 4 | <head> | |
| 5 | <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> | |
| 6 | <meta name="generator" content="Docutils 0.7: http://docutils.sourceforge.net/" /> | |
| 7 | <title>The MPL Reference Manual: empty_sequence</title> | |
| 8 | <link rel="stylesheet" href="../style.css" type="text/css" /> | |
| 9 | </head> | |
| 10 | <body class="docframe refmanual"> | |
| 11 | <table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./views.html" class="navigation-link">Prev</a> <a href="./filter-view.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group">Back <a href="./filter-view.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./views.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td> | |
| 12 | <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="./views.html" class="navigation-link">Views</a> / <a href="./empty-sequence.html" class="navigation-link">empty_sequence</a></td> | |
| 13 | </tr></table><div class="header-separator"></div> | |
| 14 | <div class="section" id="empty-sequence"> | |
| 15 | <h1><a class="toc-backref" href="./views.html#id1417">empty_sequence</a></h1> | |
| 16 | <div class="section" id="id120"> | |
| 17 | <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> | |
| 18 | <pre class="literal-block"> | |
| 19 | struct <a href="./empty-sequence.html" class="identifier">empty_sequence</a> | |
| 20 | { | |
| 21 | // <em>unspecified</em> | |
| 22 | // <em>...</em> | |
| 23 | }; | |
| 24 | </pre> | |
| 25 | </div> | |
| 26 | <div class="section" id="id121"> | |
| 27 | <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> | |
| 28 | <p>Represents a sequence containing no elements.</p> | |
| 29 | </div> | |
| 30 | <div class="section" id="id122"> | |
| 31 | <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> | |
| 32 | <pre class="literal-block"> | |
| 33 | #include <<a href="../../../../boost/mpl/empty_sequence.hpp" class="header">boost/mpl/empty_sequence.hpp</a>> | |
| 34 | </pre> | |
| 35 | </div> | |
| 36 | <div class="section" id="id123"> | |
| 37 | <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> | |
| 38 | <p>The semantics of an expression are defined only | |
| 39 | where they differ from, or are not defined in <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>.</p> | |
| 40 | <p>In the following table, <tt class="literal"><span class="pre">s</span></tt> is an instance of <tt class="literal"><span class="pre"><a href="./empty-sequence.html" class="identifier">empty_sequence</a></span></tt>.</p> | |
| 41 | <table border="1" class="docutils table"> | |
| 42 | <colgroup> | |
| 43 | <col width="34%" /> | |
| 44 | <col width="66%" /> | |
| 45 | </colgroup> | |
| 46 | <thead valign="bottom"> | |
| 47 | <tr><th class="head">Expression</th> | |
| 48 | <th class="head">Semantics</th> | |
| 49 | </tr> | |
| 50 | </thead> | |
| 51 | <tbody valign="top"> | |
| 52 | <tr><td><tt class="literal"><span class="pre"><a href="./empty-sequence.html" class="identifier">empty_sequence</a></span></tt></td> | |
| 53 | <td>An empty <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>.</td> | |
| 54 | </tr> | |
| 55 | <tr><td><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><s>::type</span></tt></td> | |
| 56 | <td><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><s>::value</span> <span class="pre">==</span> <span class="pre">0</span></tt>; see <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>.</td> | |
| 57 | </tr> | |
| 58 | </tbody> | |
| 59 | </table> | |
| 60 | </div> | |
| 61 | <div class="section" id="id124"> | |
| 62 | <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> | |
| 63 | <pre class="literal-block"> | |
| 64 | typedef <a href="./begin.html" class="identifier">begin</a><<a href="./empty-sequence.html" class="identifier">empty_sequence</a>>::type first; | |
| 65 | typedef <a href="./end.html" class="identifier">end</a><<a href="./empty-sequence.html" class="identifier">empty_sequence</a>>::type last; | |
| 66 | ||
| 67 | <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same<first,last> )); | |
| 68 | <a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( <a href="./size.html" class="identifier">size</a><<a href="./empty-sequence.html" class="identifier">empty_sequence</a>>::value, ==, 0 ); | |
| 69 | ||
| 70 | typedef <a href="./transform-view.html" class="identifier">transform_view</a>< | |
| 71 | <a href="./empty-sequence.html" class="identifier">empty_sequence</a> | |
| 72 | , add_pointer<_> | |
| 73 | > empty_view; | |
| 74 | ||
| 75 | <a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( <a href="./size.html" class="identifier">size</a><<a href="./empty-sequence.html" class="identifier">empty_sequence</a>>::value, ==, 0 ); | |
| 76 | </pre> | |
| 77 | </div> | |
| 78 | <div class="section" id="id125"> | |
| 79 | <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> | |
| 80 | <p><a class="reference internal" href="./sequences.html">Sequences</a>, <a class="reference internal" href="./views.html">Views</a>, <a class="reference internal" href="./vector.html">vector</a>, <a class="reference internal" href="./list.html">list</a>, <a class="reference internal" href="./single-view.html">single_view</a></p> | |
| 81 | <!-- Sequences/Views//filter_view --> | |
| 82 | </div> | |
| 83 | </div> | |
| 84 | ||
| 85 | <div class="footer-separator"></div> | |
| 86 | <table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./views.html" class="navigation-link">Prev</a> <a href="./filter-view.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group">Back <a href="./filter-view.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./views.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td> | |
| 87 | <td><div class="copyright-footer"><div class="copyright">Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</div> | |
| 88 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
| 89 | 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> | |
| 90 | </html> |