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: zip_view</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"><span class="navigation-group"><a href="./transform-view.html" class="navigation-link">Prev</a> <a href="./intrinsic-metafunctions.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./transform-view.html" class="navigation-link">Back</a> Along</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> <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="./zip-view.html" class="navigation-link">zip_view</a></td> </tr></table><div class="header-separator"></div> <div class="section" id="zip-view"> <h1><a class="toc-backref" href="./views.html#id1423">zip_view</a></h1> <div class="section" id="id167"> <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> <pre class="literal-block"> template< typename <a href="./sequences.html" class="identifier">Sequences</a> > struct <a href="./zip-view.html" class="identifier">zip_view</a> { // <em>unspecified</em> // <em>...</em> }; </pre> </div> <div class="section" id="id168"> <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> <p>Provides a "zipped" view onto several sequences; that is, represents several sequences as a single sequence of elements each of which, in turn, is a sequence of the corresponding <tt class="literal"><span class="pre"><a href="./sequences.html" class="identifier">Sequences</a></span></tt>' elements.</p> </div> <div class="section" id="id169"> <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> <pre class="literal-block"> #include <<a href="../../../../boost/mpl/zip_view.hpp" class="header">boost/mpl/zip_view.hpp</a>> </pre> </div> <div class="section" id="id170"> <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3> <ul class="simple"> <li><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></li> </ul> </div> <div class="section" id="id171"> <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> <table border="1" class="docutils table"> <colgroup> <col width="19%" /> <col width="43%" /> <col width="38%" /> </colgroup> <thead valign="bottom"> <tr><th class="head">Parameter</th> <th class="head">Requirement</th> <th class="head">Description</th> </tr> </thead> <tbody valign="top"> <tr><td><tt class="literal"><span class="pre"><a href="./sequences.html" class="identifier">Sequences</a></span></tt></td> <td>A <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> of <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>s</td> <td>Sequences to be "zipped".</td> </tr> </tbody> </table> </div> <div class="section" id="id172"> <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> <p>The semantics of an expression are defined only where they differ from, or are not defined in <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>.</p> <p>In the following table, <tt class="literal"><span class="pre">v</span></tt> is an instance of <tt class="literal"><span class="pre"><a href="./zip-view.html" class="identifier">zip_view</a></span></tt>, <tt class="literal"><span class="pre">seq</span></tt> a <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> of <tt class="literal"><span class="pre">n</span></tt> <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>s.</p> <table border="1" class="docutils table"> <colgroup> <col width="34%" /> <col width="66%" /> </colgroup> <thead valign="bottom"> <tr><th class="head">Expression</th> <th class="head">Semantics</th> </tr> </thead> <tbody valign="top"> <tr><td><pre class="first last literal-block"> <a href="./zip-view.html" class="identifier">zip_view</a><seq> <a href="./zip-view.html" class="identifier">zip_view</a><seq>::type </pre> </td> <td>A lazy <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> <tt class="literal"><span class="pre">v</span></tt> such that for each <tt class="literal"><span class="pre">i</span></tt> in [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><v>::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><v>::type</span></tt>) and for each <tt class="literal"><span class="pre">j</span></tt> in [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><seq>::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><seq>::type</span></tt>) <tt class="literal"><span class="pre"><a href="./deref.html" class="identifier">deref</a><i>::type</span></tt> is identical to <tt class="literal"><span class="pre"><a href="./transform.html" class="identifier">transform</a><</span> <span class="pre"><a href="./deref.html" class="identifier">deref</a><j>::type,</span> <span class="pre"><a href="./deref.html" class="identifier">deref</a><<a href="./placeholders.html" class="identifier">_1</a>></span> <span class="pre">>::type</span></tt>.</td> </tr> <tr><td><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><v>::type</span></tt></td> <td><p class="first">The size of <tt class="literal"><span class="pre">v</span></tt>; <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><v>::value</span></tt> is equal to</p> <pre class="literal-block"> <a href="./deref.html" class="identifier">deref</a>< <a href="./min-element.html" class="identifier">min_element</a>< <a href="./transform-view.html" class="identifier">transform_view</a>< seq, <a href="./size.html" class="identifier">size</a><<a href="./placeholders.html" class="identifier">_1</a>> > >::type >::type::value; </pre> <p class="last">linear complexity; see <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>.</p> </td> </tr> </tbody> </table> </div> <div class="section" id="id173"> <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> <p>Element-wise sum of three vectors.</p> <pre class="literal-block"> typedef <a href="./vector-c.html" class="identifier">vector_c</a><int,1,2,3,4,5> v1; typedef <a href="./vector-c.html" class="identifier">vector_c</a><int,5,4,3,2,1> v2; typedef <a href="./vector-c.html" class="identifier">vector_c</a><int,1,1,1,1,1> v3; typedef <a href="./transform-view.html" class="identifier">transform_view</a>< <a href="./zip-view.html" class="identifier">zip_view</a>< <a href="./vector.html" class="identifier">vector</a><v1,v2,v3> > , <a href="./unpack-args.html" class="identifier">unpack_args</a>< <a href="./plus.html" class="identifier">plus</a><<a href="./placeholders.html" class="identifier">_1</a>,<a href="./placeholders.html" class="identifier">_2</a>,<a href="./placeholders.html" class="identifier">_3</a>> > > sum; <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a>< sum, <a href="./vector-c.html" class="identifier">vector_c</a><int,7,7,7,7,7> > )); </pre> </div> <div class="section" id="id174"> <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="./views.html">Views</a>, <a class="reference internal" href="./filter-view.html">filter_view</a>, <a class="reference internal" href="./transform-view.html">transform_view</a>, <a class="reference internal" href="./joint-view.html">joint_view</a>, <a class="reference internal" href="./single-view.html">single_view</a>, <a class="reference internal" href="./iterator-range.html">iterator_range</a></p> </div> </div> <div class="footer-separator"></div> <table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./transform-view.html" class="navigation-link">Prev</a> <a href="./intrinsic-metafunctions.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./transform-view.html" class="navigation-link">Back</a> Along</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> <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>