boost-react-native-bundle

<?xml version="1.0" encoding="utf-8" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="generator" content="Docutils 0.7: http://docutils.sourceforge.net/" /> <title>The MPL Reference Manual: Reversible Algorithm</title> <link rel="stylesheet" href="../style.css" type="text/css" /> </head> <body class="docframe refmanual"> <table class="header"><tr class="header"><td class="header-group navigation-bar"><a href="./inserter.html" class="navigation-link">Prev</a> <a href="./inserters.html" class="navigation-link">Next</a> | <a href="./inserter.html" class="navigation-link">Back</a> Along | <a href="./algorithms-concepts.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a> | <a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></td> <td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./algorithms.html" class="navigation-link">Algorithms</a> / <a href="./algorithms-concepts.html" class="navigation-link">Concepts</a> / <a href="./reversible-algorithm.html" class="navigation-link">Reversible Algorithm</a></td> </tr></table><div class="header-separator"></div> <div class="section" id="reversible-algorithm"> <h1><a class="toc-backref" href="./algorithms-concepts.html#id1463">Reversible Algorithm</a></h1> <div class="section" id="id459"> <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> A <a class="reference internal" href="./reversible-algorithm.html">Reversible Algorithm</a> is a member of a pair of transformation algorithms that iterate over their input sequence(s) in opposite directions. For each reversible algorithm <tt class="literal">x</tt> there exists a counterpart algorithm <tt class="literal">reverse_x</tt>, that exhibits the exact semantics of <tt class="literal">x</tt> except that the elements of its input sequence argument(s) are processed in the reverse order. </div> <div class="section" id="id460"> <h3><a class="subsection-title" href="#expression-requirements" name="expression-requirements">Expression requirements</a></h3> In the following table and subsequent specifications, <tt class="literal">x</tt> is a placeholder token for the actual <a class="reference internal" href="./reversible-algorithm.html">Reversible Algorithm</a>'s name, s1,s2,...sn are <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>s, and <tt class="literal">in</tt> is an <a class="reference internal" href="./inserter.html">Inserter</a>. <table border="1" class="docutils table"> <colgroup> <col width="48%" /> <col width="28%" /> <col width="23%" /> </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">x<</tt>s1,s2,...sn, ...<tt class="literal">>::type</tt></td> <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td> <td>Unspecified.</td> </tr> <tr><td><tt class="literal">x<</tt>s1,s2,...sn, ... <tt class="literal">in>::type</tt></td> <td>Any type</td> <td>Unspecified.</td> </tr> <tr><td><tt class="literal">reverse_x<</tt>s1,s2,...sn, ...<tt class="literal">>::type</tt></td> <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td> <td>Unspecified.</td> </tr> <tr><td><tt class="literal">reverse_x<</tt>s1,s2,...sn, ... <tt class="literal">in>::type</tt></td> <td>Any type</td> <td>Unspecified.</td> </tr> </tbody> </table> </div> <div class="section" id="id461"> <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> <pre class="literal-block"> typedef x<s1,s2,...sn,...>::type t; </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">Precondition:</th><td class="field-body">s1 is an <a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a>. </td> </tr> <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal">t</tt> is equivalent to <pre class="literal-block"> x< s1,s2,...sn,... , <a href="./back-inserter.html" class="identifier">back_inserter</a>< <a href="./clear.html" class="identifier">clear</a><s1>::type > >::type </pre> if <tt class="literal">has_push_back<</tt>s1<tt class="literal">>::value == true</tt> and <pre class="literal-block"> reverse_x< s1,s2,...sn,... , <a href="./front-inserter.html" class="identifier">front_inserter</a>< <a href="./clear.html" class="identifier">clear</a><s1>::type > >::type </pre> otherwise. </td> </tr> </tbody> </table>  <pre class="literal-block"> typedef x<s1,s2,...sn,...in>::type t; </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">t</tt> is the result of an <tt class="literal">x</tt> invocation with arguments s1,s2,... sn,...<tt class="literal">in</tt>.</td> </tr> </tbody> </table>  <pre class="literal-block"> typedef reverse_x<s1,s2,... sn,... >::type t; </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">Precondition:</th><td class="field-body">s1 is an <a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a>. </td> </tr> <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal">t</tt> is equivalent to <pre class="literal-block"> x< s1,s2,...sn,... , <a href="./front-inserter.html" class="identifier">front_inserter</a>< <a href="./clear.html" class="identifier">clear</a><s1>::type > >::type </pre> if <tt class="literal">has_push_front<</tt>s1<tt class="literal">>::value == true</tt> and <pre class="literal-block"> reverse_x< s1,s2,...sn,... , <a href="./back-inserter.html" class="identifier">back_inserter</a>< <a href="./clear.html" class="identifier">clear</a><s1>::type > >::type </pre> otherwise. </td> </tr> </tbody> </table>  <pre class="literal-block"> typedef reverse_x<s1,s2,...sn,... in>::type t; </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">t</tt> is the result of a <tt class="literal">reverse_x</tt> invocation with arguments s1,s2,...sn,...<tt class="literal">in</tt>.</td> </tr> </tbody> </table> </div> <div class="section" id="id462"> <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> <pre class="literal-block"> typedef <a href="./transform.html" class="identifier">transform</a>< <a href="./range-c.html" class="identifier">range_c</a><int,0,10> , <a href="./plus.html" class="identifier">plus</a><<a href="./placeholders.html" class="identifier">_1</a>,<a href="./int.html" class="identifier">int_</a><7> > , <a href="./back-inserter.html" class="identifier">back_inserter</a>< vector0<> > >::type r1; typedef <a href="./transform.html" class="identifier">transform</a>< r1, <a href="./minus.html" class="identifier">minus</a><<a href="./placeholders.html" class="identifier">_1</a>,<a href="./int.html" class="identifier">int_</a><2> > >::type r2; typedef <a href="./reverse-transform.html" class="identifier">reverse_transform</a>< r2 , <a href="./minus.html" class="identifier">minus</a><<a href="./placeholders.html" class="identifier">_1</a>,5> , <a href="./front-inserter.html" class="identifier">front_inserter</a>< vector0<> > >::type r3; <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a><r1, <a href="./range-c.html" class="identifier">range_c</a><int,7,17> > )); <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a><r2, <a href="./range-c.html" class="identifier">range_c</a><int,5,15> > )); <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a><r3, <a href="./range-c.html" class="identifier">range_c</a><int,0,10> > )); </pre> </div> <div class="section" id="id463"> <h3><a class="subsection-title" href="#models" name="models">Models</a></h3> <ul class="simple"> <li><a class="reference internal" href="./transform.html">transform</a></li> <li><a class="reference internal" href="./remove.html">remove</a></li> <li><a class="reference internal" href="./replace.html">replace</a></li> </ul> </div> <div class="section" id="id464"> <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> <a class="reference internal" href="./transformation-algorithms.html">Transformation Algorithms</a>, <a class="reference internal" href="./inserter.html">Inserter</a> </div> </div> <div class="footer-separator"></div> <table class="footer"><tr class="footer"><td class="header-group navigation-bar"><a href="./inserter.html" class="navigation-link">Prev</a> <a href="./inserters.html" class="navigation-link">Next</a> | <a href="./inserter.html" class="navigation-link">Back</a> Along | <a href="./algorithms-concepts.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a> | <a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></td> <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> </html>