| <html> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> |
| <title>Function join</title> |
| <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css"> |
| <meta name="generator" content="DocBook XSL Stylesheets V1.75.2"> |
| <link rel="home" href="../../../index.html" title="Chapter 1. Range 2.0"> |
| <link rel="up" href="../utilities.html" title="Utilities"> |
| <link rel="prev" href="sub_range.html" title="Class sub_range"> |
| <link rel="next" href="../extending.html" title="Extending the library"> |
| </head> |
| <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> |
| <table cellpadding="2" width="100%"><tr> |
| <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td> |
| <td align="center"><a href="../../../../../../../index.html">Home</a></td> |
| <td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td> |
| <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> |
| <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> |
| <td align="center"><a href="../../../../../../../more/index.htm">More</a></td> |
| </tr></table> |
| <hr> |
| <div class="spirit-nav"> |
| <a accesskey="p" href="sub_range.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../utilities.html"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../extending.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h4 class="title"> |
| <a name="range.reference.utilities.join"></a><a class="link" href="join.html" title="Function join"> Function join</a> |
| </h4></div></div></div> |
| <p> |
| The intention of the <code class="computeroutput"><span class="identifier">join</span></code> |
| function is to join two ranges into one longer range. |
| </p> |
| <p> |
| The resultant range will have the lowest common traversal of the two ranges |
| supplied as parameters. |
| </p> |
| <p> |
| Note that the joined range incurs a performance cost due to the need to |
| check if the end of a range has been reached internally during traversal. |
| </p> |
| <a name="range.reference.utilities.join.synposis"></a><h5> |
| <a name="id872294"></a> |
| <a class="link" href="join.html#range.reference.utilities.join.synposis">Synposis</a> |
| </h5> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">SinglePassRange1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">SinglePassRange2</span><span class="special">></span> |
| <span class="identifier">iterator_range</span><span class="special"><</span><span class="identifier">range_detail</span><span class="special">::</span><span class="identifier">join_iterator</span><span class="special"><</span> |
| <span class="keyword">typename</span> <span class="identifier">range_iterator</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">SinglePassRange1</span><span class="special">>::</span><span class="identifier">type</span><span class="special">,</span> |
| <span class="keyword">typename</span> <span class="identifier">range_iterator</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">SinglePassRange2</span><span class="special">>::</span><span class="identifier">type</span><span class="special">,</span> |
| <span class="keyword">typename</span> <span class="identifier">add_const</span><span class="special"><</span> |
| <span class="keyword">typename</span> <span class="identifier">range_value</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">SinglePassRange1</span><span class="special">>::</span><span class="identifier">type</span><span class="special">>::</span><span class="identifier">type</span><span class="special">></span> |
| <span class="special">></span> |
| <span class="identifier">join</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">SinglePassRange1</span><span class="special">&</span> <span class="identifier">rng1</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">SinglePassRange2</span><span class="special">&</span> <span class="identifier">rng2</span><span class="special">)</span> |
| |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">SinglePassRange1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">SinglePassRange2</span><span class="special">></span> |
| <span class="identifier">iterator_range</span><span class="special"><</span><span class="identifier">range_detail</span><span class="special">::</span><span class="identifier">join_iterator</span><span class="special"><</span> |
| <span class="keyword">typename</span> <span class="identifier">range_iterator</span><span class="special"><</span><span class="identifier">SinglePassRange1</span><span class="special">>::</span><span class="identifier">type</span><span class="special">,</span> |
| <span class="keyword">typename</span> <span class="identifier">range_iterator</span><span class="special"><</span><span class="identifier">SinglePassRange2</span><span class="special">>::</span><span class="identifier">type</span><span class="special">,</span> |
| <span class="keyword">typename</span> <span class="identifier">range_value</span><span class="special"><</span><span class="identifier">SinglePassRange1</span><span class="special">>::</span><span class="identifier">type</span><span class="special">></span> |
| <span class="special">></span> |
| <span class="identifier">join</span><span class="special">(</span><span class="identifier">SinglePassRange1</span><span class="special">&</span> <span class="identifier">rng1</span><span class="special">,</span> <span class="identifier">SinglePassRange2</span><span class="special">&</span> <span class="identifier">rng2</span><span class="special">);</span> |
| </pre> |
| <p> |
| </p> |
| <a name="range.reference.utilities.join.example"></a><h5> |
| <a name="id872828"></a> |
| <a class="link" href="join.html#range.reference.utilities.join.example">Example</a> |
| </h5> |
| <p> |
| The expression <code class="computeroutput"><span class="identifier">join</span><span class="special">(</span><span class="identifier">irange</span><span class="special">(</span><span class="number">0</span><span class="special">,</span><span class="number">5</span><span class="special">),</span> <span class="identifier">irange</span><span class="special">(</span><span class="number">5</span><span class="special">,</span><span class="number">10</span><span class="special">))</span></code> would |
| evaluate to a range representing an integer range <code class="computeroutput"><span class="special">[</span><span class="number">0</span><span class="special">,</span><span class="number">10</span><span class="special">)</span></code> |
| </p> |
| </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 © 2003 -2010 Thorsten Ottosen, Neil Groves<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> |
| <hr> |
| <div class="spirit-nav"> |
| <a accesskey="p" href="sub_range.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../utilities.html"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../extending.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> |
| </div> |
| </body> |
| </html> |
