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| author | Anas Nashif <anas.nashif@intel.com> | 2012-10-30 12:57:26 -0700 |
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| committer | Anas Nashif <anas.nashif@intel.com> | 2012-10-30 12:57:26 -0700 |
| commit | 1a78a62555be32868418fe52f8e330c9d0f95d5a (patch) | |
| tree | d3765a80e7d3b9640ec2e930743630cd6b9fce2b /doc/html/array.html | |
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diff --git a/doc/html/array.html b/doc/html/array.html new file mode 100644 index 0000000000..d23d87d2ce --- /dev/null +++ b/doc/html/array.html @@ -0,0 +1,119 @@ +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> +<title>Chapter 3. Boost.Array</title> +<link rel="stylesheet" href="../../doc/src/boostbook.css" type="text/css"> +<meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> +<link rel="home" href="index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> +<link rel="up" href="libraries.html" title="Part I. The Boost C++ Libraries (BoostBook Subset)"> +<link rel="prev" href="any/s04.html" title="Acknowledgements"> +<link rel="next" href="array/reference.html" title="Reference"> +</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="any/s04.html"><img src="../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="libraries.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="array/reference.html"><img src="../../doc/src/images/next.png" alt="Next"></a> +</div> +<div class="chapter"> +<div class="titlepage"><div> +<div><h2 class="title"> +<a name="array"></a>Chapter 3. Boost.Array</h2></div> +<div><div class="author"><h3 class="author"> +<span class="firstname">Nicolai</span> <span class="surname">Josuttis</span> +</h3></div></div> +<div><p class="copyright">Copyright © 2001-2004 Nicolai M. Josuttis</p></div> +<div><div class="legalnotice"> +<a name="id1031332"></a><p>Distributed under the Boost Software License, Version 1.0. + (See accompanying file <code class="filename">LICENSE_1_0.txt</code> 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></div> +</div></div> +<div class="toc"> +<p><b>Table of Contents</b></p> +<dl> +<dt><span class="section"><a href="array.html#array.intro">Introduction</a></span></dt> +<dt><span class="section"><a href="array/reference.html">Reference</a></span></dt> +<dd><dl><dt><span class="section"><a href="array/reference.html#header.boost.array_hpp">Header <boost/array.hpp></a></span></dt></dl></dd> +<dt><span class="section"><a href="array/rationale.html">Design Rationale</a></span></dt> +<dt><span class="section"><a href="array/more/info.html">For more information...</a></span></dt> +<dt><span class="section"><a href="array/ack.html">Acknowledgements</a></span></dt> +</dl> +</div> +<div class="section"> +<div class="titlepage"><div><div><h2 class="title" style="clear: both"> +<a name="array.intro"></a>Introduction</h2></div></div></div> +<p>The C++ Standard Template Library STL as part of the C++ + Standard Library provides a framework for processing algorithms on + different kind of containers. However, ordinary arrays don't + provide the interface of STL containers (although, they provide + the iterator interface of STL containers).</p> +<p>As replacement for ordinary arrays, the STL provides class + <code class="computeroutput">std::vector</code>. However, + <code class="computeroutput">std::vector<></code> provides + the semantics of dynamic arrays. Thus, it manages data to be able + to change the number of elements. This results in some overhead in + case only arrays with static size are needed.</p> +<p>In his book, <span class="emphasis"><em>Generic Programming and the + STL</em></span>, Matthew H. Austern introduces a useful wrapper + class for ordinary arrays with static size, called + <code class="computeroutput">block</code>. It is safer and has no worse performance than + ordinary arrays. In <span class="emphasis"><em>The C++ Programming + Language</em></span>, 3rd edition, Bjarne Stroustrup introduces a + similar class, called <code class="computeroutput">c_array</code>, which I (<a href="http://www.josuttis.com" target="_top">Nicolai Josuttis</a>) present + slightly modified in my book <span class="emphasis"><em>The C++ Standard Library - + A Tutorial and Reference</em></span>, called + <code class="computeroutput">carray</code>. This is the essence of these approaches + spiced with many feedback from <a href="http://www.boost.org" target="_top">boost</a>.</p> +<p>After considering different names, we decided to name this + class simply <code class="computeroutput"><a class="link" href="boost/array.html" title="Class template array">array</a></code>.</p> +<p>Note that this class is suggested to be part of the next + Technical Report, which will extend the C++ Standard (see + <a href="http://std.dkuug.dk/jtc1/sc22/wg21/docs/papers/2003/n1548.htm" target="_top">http://std.dkuug.dk/jtc1/sc22/wg21/docs/papers/2003/n1548.htm</a>).</p> +<p>Class <code class="computeroutput"><a class="link" href="boost/array.html" title="Class template array">array</a></code> fulfills most + but not all of the requirements of "reversible containers" (see + Section 23.1, [lib.container.requirements] of the C++ + Standard). The reasons array is not an reversible STL container is + because: + </p> +<div class="itemizedlist"><ul class="itemizedlist" type="disc" compact> +<li class="listitem">No constructors are provided.</li> +<li class="listitem">Elements may have an undetermined initial value (see <a class="xref" href="array/rationale.html" title="Design Rationale">the section called “Design Rationale”</a>).</li> +<li class="listitem"> +<code class="computeroutput"><a class="link" href="boost/array.html#boost.array.swap_id424908">swap</a></code>() has no constant complexity.</li> +<li class="listitem"> +<code class="computeroutput"><a class="link" href="boost/array.html#id424558-bb">size</a></code>() is always constant, based on the second template argument of the type.</li> +<li class="listitem">The container provides no allocator support.</li> +</ul></div> +<p> + </p> +<p>It doesn't fulfill the requirements of a "sequence" (see Section 23.1.1, [lib.sequence.reqmts] of the C++ Standard), except that: + </p> +<div class="itemizedlist"><ul class="itemizedlist" type="disc" compact> +<li class="listitem"> +<code class="computeroutput"><a class="link" href="boost/array.html#id424717-bb">front</a></code>() and <code class="computeroutput"><a class="link" href="boost/array.html#id424751-bb">back</a></code>() are provided.</li> +<li class="listitem"> +<code class="computeroutput"><a class="link" href="boost/array.html#id424613-bb">operator[]</a></code> and <code class="computeroutput"><a class="link" href="boost/array.html#id424665-bb">at</a></code>() are provided.</li> +</ul></div> +<p> + </p> +</div> +</div> +<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> +<td align="left"><p><small>Last revised: March 29, 2011 at 22:04:24 +0100</small></p></td> +<td align="right"><div class="copyright-footer"></div></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="any/s04.html"><img src="../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="libraries.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="array/reference.html"><img src="../../doc/src/images/next.png" alt="Next"></a> +</div> +</body> +</html> |