<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>Construction</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. Fusion 2.0"> <link rel="up" href="../class_template_tuple.html" title="Class template tuple"> <link rel="prev" href="../class_template_tuple.html" title="Class template tuple"> <link rel="next" href="tuple_creation_functions.html" title="Tuple creation functions"> </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="../class_template_tuple.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../class_template_tuple.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="tuple_creation_functions.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="fusion.tuple.class_template_tuple.construction"></a><a class="link" href="construction.html" title="Construction">Construction</a> </h4></div></div></div> <a name="fusion.tuple.class_template_tuple.construction.description"></a><h6> <a name="id1086700"></a> <a class="link" href="construction.html#fusion.tuple.class_template_tuple.construction.description">Description</a> </h6> <p> The <a href="http://std.dkuug.dk/jtc1/sc22/wg21/docs/papers/2002/n1403.pdf" target="_top">TR1 Tuple</a> type provides a default constructor, a constructor that takes initializers for all of its elements, a copy constructor, and a converting copy constructor. The details of the various constructors are described in this section. </p> <a name="fusion.tuple.class_template_tuple.construction.specification"></a><h6> <a name="id1086728"></a> <a class="link" href="construction.html#fusion.tuple.class_template_tuple.construction.specification">Specification</a> </h6> <div class="variablelist"> <p class="title"><b>Notation</b></p> <dl> <dt><span class="term"><code class="computeroutput"><span class="identifier">T1</span> <span class="special">...</span> <span class="identifier">TN</span></code>, <code class="computeroutput"><span class="identifier">U1</span> <span class="special">...</span> <span class="identifier">UN</span></code></span></dt> <dd><p> Tuple element types </p></dd> <dt><span class="term"><code class="computeroutput"><span class="identifier">P1</span> <span class="special">...</span> <span class="identifier">PN</span></code></span></dt> <dd><p> Parameter types </p></dd> <dt><span class="term"><code class="computeroutput"><span class="identifier">Ti</span></code>, <code class="computeroutput"><span class="identifier">Ui</span></code></span></dt> <dd><p> The type of the <code class="computeroutput"><span class="identifier">i</span></code>th element of a tuple </p></dd> <dt><span class="term"><code class="computeroutput"><span class="identifier">Pi</span></code></span></dt> <dd><p> The type of the <code class="computeroutput"><span class="identifier">i</span></code>th parameter </p></dd> </dl> </div> <pre class="programlisting"><span class="identifier">tuple</span><span class="special">();</span> </pre> <p> <span class="bold"><strong>Requirements</strong></span>: Each <code class="computeroutput"><span class="identifier">Ti</span></code> is default constructable. </p> <p> <span class="bold"><strong>Semantics</strong></span>: Default initializes each element of the tuple. </p> <pre class="programlisting"><span class="identifier">tuple</span><span class="special">(</span><span class="identifier">P1</span><span class="special">,</span><span class="identifier">P2</span><span class="special">,...,</span><span class="identifier">PN</span><span class="special">);</span> </pre> <p> <span class="bold"><strong>Requirements</strong></span>: Each <code class="computeroutput"><span class="identifier">Pi</span></code> is <code class="computeroutput"><span class="identifier">Ti</span></code> if <code class="computeroutput"><span class="identifier">Ti</span></code> is a reference type, <code class="computeroutput"><span class="keyword">const</span> <span class="identifier">Ti</span><span class="special">&</span></code> otherwise. </p> <p> <span class="bold"><strong>Semantics</strong></span>: Copy initializes each element with the corresponding parameter. </p> <pre class="programlisting"><span class="identifier">tuple</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">tuple</span><span class="special">&</span> <span class="identifier">t</span><span class="special">);</span> </pre> <p> <span class="bold"><strong>Requirements</strong></span>: Each <code class="computeroutput"><span class="identifier">Ti</span></code> should be copy constructable. </p> <p> <span class="bold"><strong>Semantics</strong></span>: Copy constructs each element of <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code> with the corresponding element of <code class="computeroutput"><span class="identifier">t</span></code>. </p> <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">U1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">U2</span><span class="special">,</span> <span class="special">...,</span> <span class="keyword">typename</span> <span class="identifier">UN</span><span class="special">></span> <span class="identifier">tuple</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">tuple</span><span class="special"><</span><span class="identifier">U1</span><span class="special">,</span> <span class="identifier">U2</span><span class="special">,</span> <span class="special">...,</span> <span class="identifier">UN</span><span class="special">>&</span> <span class="identifier">t</span><span class="special">);</span> </pre> <p> <span class="bold"><strong>Requirements</strong></span>: Each <code class="computeroutput"><span class="identifier">Ti</span></code> shall be constructible from the corresponding <code class="computeroutput"><span class="identifier">Ui</span></code>. </p> <p> <span class="bold"><strong>Semantics</strong></span>: Constructs each element of <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code> with the corresponding element of <code class="computeroutput"><span class="identifier">t</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 © 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> </div></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="../class_template_tuple.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../class_template_tuple.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="tuple_creation_functions.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html>