| <!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
| <chapter xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" id="array" rev:last-revision="$Date$"> |
| <chapterinfo><author> |
| <firstname>Nicolai</firstname> |
| <surname>Josuttis</surname> |
| </author><copyright> |
| <year>2001</year> |
| <year>2002</year> |
| <year>2003</year> |
| <year>2004</year> |
| <holder>Nicolai M. Josuttis</holder> |
| </copyright><legalnotice> |
| <para>Distributed under the Boost Software License, Version 1.0. |
| (See accompanying file <filename>LICENSE_1_0.txt</filename> or copy at |
| <ulink url="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</ulink>) |
| </para> |
| </legalnotice></chapterinfo> |
| |
| <title>Boost.Array</title> |
| |
| <section id="array.intro"> |
| <title>Introduction</title> |
| |
| |
| |
| |
| <para>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).</para> |
| |
| <para>As replacement for ordinary arrays, the STL provides class |
| <computeroutput xmlns:xi="http://www.w3.org/2001/XInclude">std::vector</computeroutput>. However, |
| <computeroutput xmlns:xi="http://www.w3.org/2001/XInclude">std::vector<></computeroutput> 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.</para> |
| |
| <para>In his book, <emphasis>Generic Programming and the |
| STL</emphasis>, Matthew H. Austern introduces a useful wrapper |
| class for ordinary arrays with static size, called |
| <computeroutput xmlns:xi="http://www.w3.org/2001/XInclude">block</computeroutput>. It is safer and has no worse performance than |
| ordinary arrays. In <emphasis>The C++ Programming |
| Language</emphasis>, 3rd edition, Bjarne Stroustrup introduces a |
| similar class, called <computeroutput xmlns:xi="http://www.w3.org/2001/XInclude">c_array</computeroutput>, which I (<ulink url="http://www.josuttis.com">Nicolai Josuttis</ulink>) present |
| slightly modified in my book <emphasis>The C++ Standard Library - |
| A Tutorial and Reference</emphasis>, called |
| <computeroutput xmlns:xi="http://www.w3.org/2001/XInclude">carray</computeroutput>. This is the essence of these approaches |
| spiced with many feedback from <ulink url="http://www.boost.org">boost</ulink>.</para> |
| |
| <para>After considering different names, we decided to name this |
| class simply <computeroutput xmlns:xi="http://www.w3.org/2001/XInclude"><link linkend="boost.array">array</link></computeroutput>.</para> |
| |
| <para>Note that this class is suggested to be part of the next |
| Technical Report, which will extend the C++ Standard (see |
| <ulink url="http://std.dkuug.dk/jtc1/sc22/wg21/docs/papers/2003/n1548.htm">http://std.dkuug.dk/jtc1/sc22/wg21/docs/papers/2003/n1548.htm</ulink>).</para> |
| |
| <para>Class <computeroutput xmlns:xi="http://www.w3.org/2001/XInclude"><link linkend="boost.array">array</link></computeroutput> 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: |
| <itemizedlist spacing="compact"> |
| <listitem><simpara>No constructors are provided.</simpara></listitem> |
| <listitem><simpara>Elements may have an undetermined initial value (see <xref linkend="array.rationale"/>).</simpara></listitem> |
| <listitem><simpara><computeroutput xmlns:xi="http://www.w3.org/2001/XInclude"><link linkend="boost.array.swap">swap</link></computeroutput>() has no constant complexity.</simpara></listitem> |
| <listitem><simpara><computeroutput xmlns:xi="http://www.w3.org/2001/XInclude"><link linkend="id17-bb">size</link></computeroutput>() is always constant, based on the second template argument of the type.</simpara></listitem> |
| <listitem><simpara>The container provides no allocator support.</simpara></listitem> |
| </itemizedlist> |
| </para> |
| |
| <para>It doesn't fulfill the requirements of a "sequence" (see Section 23.1.1, [lib.sequence.reqmts] of the C++ Standard), except that: |
| <itemizedlist spacing="compact"> |
| <listitem><simpara><computeroutput xmlns:xi="http://www.w3.org/2001/XInclude"><link linkend="id27-bb">front</link></computeroutput>() and <computeroutput xmlns:xi="http://www.w3.org/2001/XInclude"><link linkend="id30-bb">back</link></computeroutput>() are provided.</simpara></listitem> |
| <listitem><simpara><computeroutput xmlns:xi="http://www.w3.org/2001/XInclude"><link linkend="id21-bb">operator[]</link></computeroutput> and <computeroutput xmlns:xi="http://www.w3.org/2001/XInclude"><link linkend="id24-bb">at</link></computeroutput>() are provided.</simpara></listitem> |
| </itemizedlist> |
| </para> |
| </section> |
| |
| <section id="array.reference"><title>Reference</title> |
| <section id="header.boost.array_hpp"><title>Header <<ulink url="../../boost/array.hpp">boost/array.hpp</ulink>></title><synopsis xmlns:xi="http://www.w3.org/2001/XInclude"><phrase role="keyword">namespace</phrase> <phrase role="identifier">boost</phrase> <phrase role="special">{</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> <phrase role="keyword">class</phrase> <link linkend="boost.array">array</link><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> <phrase role="keyword">void</phrase> <link linkend="boost.array.swap"><phrase role="identifier">swap</phrase></link><phrase role="special">(</phrase><link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator=="><phrase role="keyword">operator</phrase><phrase role="special">==</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator!="><phrase role="keyword">operator</phrase><phrase role="special">!=</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator_id1"><phrase role="keyword">operator</phrase><phrase role="special"><</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator_id2"><phrase role="keyword">operator</phrase><phrase role="special">></phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator_=_id1"><phrase role="keyword">operator</phrase><phrase role="special"><=</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator_=_id2"><phrase role="keyword">operator</phrase><phrase role="special">>=</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="special">}</phrase></synopsis> |
| <refentry xmlns:xi="http://www.w3.org/2001/XInclude" id="boost.array"><refmeta><refentrytitle>Class template array</refentrytitle><manvolnum>3</manvolnum></refmeta><refnamediv><refname>boost::array</refname><refpurpose>STL compliant container wrapper for arrays of constant size</refpurpose></refnamediv><refsynopsisdiv><synopsis><phrase role="comment">// In header: <<link linkend="header.boost.array_hpp">boost/array.hpp</link>> |
| |
| </phrase><phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">class</phrase> <link linkend="boost.array">array</link> <phrase role="special">{</phrase> |
| <phrase role="keyword">public</phrase><phrase role="special">:</phrase> |
| <phrase role="comment">// types</phrase> |
| <phrase role="keyword">typedef</phrase> <phrase role="identifier">T</phrase> <anchor id="boost.array.value_type"/><phrase role="identifier">value_type</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">typedef</phrase> <phrase role="identifier">T</phrase><phrase role="special">*</phrase> <anchor id="boost.array.iterator"/><phrase role="identifier">iterator</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">typedef</phrase> <phrase role="keyword">const</phrase> <phrase role="identifier">T</phrase><phrase role="special">*</phrase> <anchor id="boost.array.const_iterator"/><phrase role="identifier">const_iterator</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">typedef</phrase> std::reverse_iterator<phrase role="special"><</phrase><phrase role="identifier">iterator</phrase><phrase role="special">></phrase> <anchor id="boost.array.reverse_iterator"/><phrase role="identifier">reverse_iterator</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">typedef</phrase> std::reverse_iterator<phrase role="special"><</phrase><phrase role="identifier">const_iterator</phrase><phrase role="special">></phrase> <anchor id="boost.array.const_reverse_iterator"/><phrase role="identifier">const_reverse_iterator</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">typedef</phrase> <phrase role="identifier">T</phrase><phrase role="special">&</phrase> <anchor id="boost.array.reference"/><phrase role="identifier">reference</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">typedef</phrase> <phrase role="keyword">const</phrase> <phrase role="identifier">T</phrase><phrase role="special">&</phrase> <anchor id="boost.array.const_reference"/><phrase role="identifier">const_reference</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">typedef</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> <anchor id="boost.array.size_type"/><phrase role="identifier">size_type</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">typedef</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">ptrdiff_t</phrase> <anchor id="boost.array.difference_type"/><phrase role="identifier">difference_type</phrase><phrase role="special">;</phrase> |
| |
| <phrase role="comment">// static constants</phrase> |
| <phrase role="keyword">static</phrase> <phrase role="keyword">const</phrase> <phrase role="identifier">size_type</phrase> <phrase role="identifier">static_size</phrase> = <phrase role="identifier">N</phrase><phrase role="special">;</phrase> |
| |
| <phrase role="comment">// <link linkend="boost.arrayconstruct-copy-destruct">construct/copy/destruct</link></phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> U<phrase role="special">></phrase> array& <link linkend="id1-bb"><phrase role="keyword">operator</phrase><phrase role="special">=</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">U</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| |
| <phrase role="comment">// <link linkend="id2-bb">iterator support</link></phrase> |
| <phrase role="identifier">iterator</phrase> <link linkend="id4-bb"><phrase role="identifier">begin</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_iterator</phrase> <link linkend="id5-bb"><phrase role="identifier">begin</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">iterator</phrase> <link linkend="id7-bb"><phrase role="identifier">end</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_iterator</phrase> <link linkend="id8-bb"><phrase role="identifier">end</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase> |
| |
| <phrase role="comment">// <link linkend="id9-bb">reverse iterator support</link></phrase> |
| <phrase role="identifier">reverse_iterator</phrase> <link linkend="id11-bb"><phrase role="identifier">rbegin</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reverse_iterator</phrase> <link linkend="id12-bb"><phrase role="identifier">rbegin</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">reverse_iterator</phrase> <link linkend="id14-bb"><phrase role="identifier">rend</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reverse_iterator</phrase> <link linkend="id15-bb"><phrase role="identifier">rend</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase> |
| |
| <phrase role="comment">// <link linkend="id16-bb">capacity</link></phrase> |
| <phrase role="identifier">size_type</phrase> <link linkend="id17-bb"><phrase role="identifier">size</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="id18-bb"><phrase role="identifier">empty</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">size_type</phrase> <link linkend="id19-bb"><phrase role="identifier">max_size</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| |
| <phrase role="comment">// <link linkend="id20-bb">element access</link></phrase> |
| <phrase role="identifier">reference</phrase> <link linkend="id22-bb"><phrase role="keyword">operator</phrase><phrase role="special">[</phrase><phrase role="special">]</phrase></link><phrase role="special">(</phrase><phrase role="identifier">size_type</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reference</phrase> <link linkend="id23-bb"><phrase role="keyword">operator</phrase><phrase role="special">[</phrase><phrase role="special">]</phrase></link><phrase role="special">(</phrase><phrase role="identifier">size_type</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">reference</phrase> <link linkend="id25-bb"><phrase role="identifier">at</phrase></link><phrase role="special">(</phrase><phrase role="identifier">size_type</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reference</phrase> <link linkend="id26-bb"><phrase role="identifier">at</phrase></link><phrase role="special">(</phrase><phrase role="identifier">size_type</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">reference</phrase> <link linkend="id28-bb"><phrase role="identifier">front</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reference</phrase> <link linkend="id29-bb"><phrase role="identifier">front</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">reference</phrase> <link linkend="id31-bb"><phrase role="identifier">back</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reference</phrase> <link linkend="id32-bb"><phrase role="identifier">back</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">const</phrase> <phrase role="identifier">T</phrase><phrase role="special">*</phrase> <link linkend="id33-bb"><phrase role="identifier">data</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">T</phrase><phrase role="special">*</phrase> <link linkend="id34-bb"><phrase role="identifier">c_array</phrase></link><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| |
| <phrase role="comment">// <link linkend="id35-bb">modifiers</link></phrase> |
| <phrase role="keyword">void</phrase> <link linkend="id36-bb"><phrase role="identifier">swap</phrase></link><phrase role="special">(</phrase><link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">void</phrase> <link linkend="id37-bb"><phrase role="identifier">assign</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <phrase role="identifier">T</phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">T</phrase> elems[N]<phrase role="special">;</phrase> |
| <phrase role="special">}</phrase><phrase role="special">;</phrase> |
| |
| <phrase role="comment">// <link linkend="id38-bb">specialized algorithms</link></phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> <phrase role="keyword">void</phrase> <link linkend="boost.array.swap"><phrase role="identifier">swap</phrase></link><phrase role="special">(</phrase><link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| |
| <phrase role="comment">// <link linkend="id39-bb">comparisons</link></phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator=="><phrase role="keyword">operator</phrase><phrase role="special">==</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator!="><phrase role="keyword">operator</phrase><phrase role="special">!=</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator_id1"><phrase role="keyword">operator</phrase><phrase role="special"><</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator_id2"><phrase role="keyword">operator</phrase><phrase role="special">></phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator_=_id1"><phrase role="keyword">operator</phrase><phrase role="special"><=</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <link linkend="boost.array.operator_=_id2"><phrase role="keyword">operator</phrase><phrase role="special">>=</phrase></link><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase></synopsis></refsynopsisdiv><refsect1><title>Description</title><refsect2><title><anchor id="boost.arrayconstruct-copy-destruct"/><computeroutput>array</computeroutput> |
| public |
| construct/copy/destruct</title><orderedlist><listitem><para><literallayout class="monospaced"><phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> U<phrase role="special">></phrase> array& <anchor id="id1-bb"/><phrase role="keyword">operator</phrase><phrase role="special">=</phrase><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">U</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> other<phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Effects:</term><listitem><simpara><computeroutput>std::copy(rhs.<link linkend="id3-bb">begin</link>(),rhs.<link linkend="id6-bb">end</link>(), <link linkend="id3-bb">begin</link>())</computeroutput></simpara></listitem></varlistentry></variablelist></listitem></orderedlist></refsect2><refsect2><title><anchor id="id2-bb"/><computeroutput>array</computeroutput> iterator support</title><orderedlist><listitem><para><literallayout class="monospaced"><anchor id="id3-bb"/><phrase role="identifier">iterator</phrase> <anchor id="id4-bb"/><phrase role="identifier">begin</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_iterator</phrase> <anchor id="id5-bb"/><phrase role="identifier">begin</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara>iterator for the first element</simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara>will not throw</simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><anchor id="id6-bb"/><phrase role="identifier">iterator</phrase> <anchor id="id7-bb"/><phrase role="identifier">end</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_iterator</phrase> <anchor id="id8-bb"/><phrase role="identifier">end</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara>iterator for position after the last element</simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara>will not throw</simpara></listitem></varlistentry></variablelist></listitem></orderedlist></refsect2><refsect2><title><anchor id="id9-bb"/><computeroutput>array</computeroutput> reverse iterator support</title><orderedlist><listitem><para><literallayout class="monospaced"><anchor id="id10-bb"/><phrase role="identifier">reverse_iterator</phrase> <anchor id="id11-bb"/><phrase role="identifier">rbegin</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reverse_iterator</phrase> <anchor id="id12-bb"/><phrase role="identifier">rbegin</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara>reverse iterator for the first element of reverse iteration</simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><anchor id="id13-bb"/><phrase role="identifier">reverse_iterator</phrase> <anchor id="id14-bb"/><phrase role="identifier">rend</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reverse_iterator</phrase> <anchor id="id15-bb"/><phrase role="identifier">rend</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara>reverse iterator for position after the last element in reverse iteration</simpara></listitem></varlistentry></variablelist></listitem></orderedlist></refsect2><refsect2><title><anchor id="id16-bb"/><computeroutput>array</computeroutput> capacity</title><orderedlist><listitem><para><literallayout class="monospaced"><phrase role="identifier">size_type</phrase> <anchor id="id17-bb"/><phrase role="identifier">size</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>N</computeroutput></simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><phrase role="keyword">bool</phrase> <anchor id="id18-bb"/><phrase role="identifier">empty</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>N==0</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara>will not throw</simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><phrase role="identifier">size_type</phrase> <anchor id="id19-bb"/><phrase role="identifier">max_size</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>N</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara>will not throw</simpara></listitem></varlistentry></variablelist></listitem></orderedlist></refsect2><refsect2><title><anchor id="id20-bb"/><computeroutput>array</computeroutput> element access</title><orderedlist><listitem><para><literallayout class="monospaced"><anchor id="id21-bb"/><phrase role="identifier">reference</phrase> <anchor id="id22-bb"/><phrase role="keyword">operator</phrase><phrase role="special">[</phrase><phrase role="special">]</phrase><phrase role="special">(</phrase><phrase role="identifier">size_type</phrase> i<phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reference</phrase> <anchor id="id23-bb"/><phrase role="keyword">operator</phrase><phrase role="special">[</phrase><phrase role="special">]</phrase><phrase role="special">(</phrase><phrase role="identifier">size_type</phrase> i<phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Requires:</term><listitem><simpara><computeroutput>i < N</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Returns:</term><listitem><simpara>element with index <computeroutput>i</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara>will not throw.</simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><anchor id="id24-bb"/><phrase role="identifier">reference</phrase> <anchor id="id25-bb"/><phrase role="identifier">at</phrase><phrase role="special">(</phrase><phrase role="identifier">size_type</phrase> i<phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reference</phrase> <anchor id="id26-bb"/><phrase role="identifier">at</phrase><phrase role="special">(</phrase><phrase role="identifier">size_type</phrase> i<phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara>element with index <computeroutput>i</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara><computeroutput>std::range_error</computeroutput> if <computeroutput>i >= N</computeroutput></simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><anchor id="id27-bb"/><phrase role="identifier">reference</phrase> <anchor id="id28-bb"/><phrase role="identifier">front</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reference</phrase> <anchor id="id29-bb"/><phrase role="identifier">front</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Requires:</term><listitem><simpara><computeroutput>N > 0</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Returns:</term><listitem><simpara>the first element</simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara>will not throw</simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><anchor id="id30-bb"/><phrase role="identifier">reference</phrase> <anchor id="id31-bb"/><phrase role="identifier">back</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase> |
| <phrase role="identifier">const_reference</phrase> <anchor id="id32-bb"/><phrase role="identifier">back</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Requires:</term><listitem><simpara><computeroutput>N > 0</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Returns:</term><listitem><simpara>the last element</simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara>will not throw</simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><phrase role="keyword">const</phrase> <phrase role="identifier">T</phrase><phrase role="special">*</phrase> <anchor id="id33-bb"/><phrase role="identifier">data</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase> <phrase role="keyword">const</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>elems</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara>will not throw</simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><phrase role="identifier">T</phrase><phrase role="special">*</phrase> <anchor id="id34-bb"/><phrase role="identifier">c_array</phrase><phrase role="special">(</phrase><phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>elems</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara>will not throw</simpara></listitem></varlistentry></variablelist></listitem></orderedlist></refsect2><refsect2><title><anchor id="id35-bb"/><computeroutput>array</computeroutput> modifiers</title><orderedlist><listitem><para><literallayout class="monospaced"><phrase role="keyword">void</phrase> <anchor id="id36-bb"/><phrase role="identifier">swap</phrase><phrase role="special">(</phrase><link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> other<phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Effects:</term><listitem><simpara><computeroutput>std::swap_ranges(<link linkend="id3-bb">begin</link>(), <link linkend="id6-bb">end</link>(), other.<link linkend="id3-bb">begin</link>())</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Complexity:</term><listitem><simpara>linear in <computeroutput>N</computeroutput></simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><phrase role="keyword">void</phrase> <anchor id="id37-bb"/><phrase role="identifier">assign</phrase><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <phrase role="identifier">T</phrase><phrase role="special">&</phrase> value<phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Effects:</term><listitem><simpara><computeroutput>std::fill_n(<link linkend="id3-bb">begin</link>(), N, value)</computeroutput></simpara></listitem></varlistentry></variablelist></listitem></orderedlist></refsect2><refsect2><title><anchor id="id38-bb"/><computeroutput>array</computeroutput> specialized algorithms</title><orderedlist><listitem><para><literallayout class="monospaced"><phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> <phrase role="keyword">void</phrase> <anchor id="boost.array.swap"/><phrase role="identifier">swap</phrase><phrase role="special">(</phrase><link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> x<phrase role="special">,</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> y<phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Effects:</term><listitem><simpara><computeroutput>x.<link linkend="id36-bb">swap</link>(y)</computeroutput></simpara></listitem></varlistentry><varlistentry><term>Throws:</term><listitem><simpara>will not throw.</simpara></listitem></varlistentry></variablelist></listitem></orderedlist></refsect2><refsect2><title><anchor id="id39-bb"/><computeroutput>array</computeroutput> comparisons</title><orderedlist><listitem><para><literallayout class="monospaced"><phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <anchor id="boost.array.operator=="/><phrase role="keyword">operator</phrase><phrase role="special">==</phrase><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> x<phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> y<phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>std::equal(x.<link linkend="id3-bb">begin</link>(), x.<link linkend="id6-bb">end</link>(), y.<link linkend="id3-bb">begin</link>())</computeroutput></simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <anchor id="boost.array.operator!="/><phrase role="keyword">operator</phrase><phrase role="special">!=</phrase><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> x<phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> y<phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>!(x == y)</computeroutput></simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <anchor id="boost.array.operator_id1"/><phrase role="keyword">operator</phrase><phrase role="special"><</phrase><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> x<phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> y<phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>std::lexicographical_compare(x.<link linkend="id3-bb">begin</link>(), x.<link linkend="id6-bb">end</link>(), y.<link linkend="id3-bb">begin</link>(), y.<link linkend="id6-bb">end</link>())</computeroutput></simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <anchor id="boost.array.operator_id2"/><phrase role="keyword">operator</phrase><phrase role="special">></phrase><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> x<phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> y<phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>y < x</computeroutput></simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <anchor id="boost.array.operator_=_id1"/><phrase role="keyword">operator</phrase><phrase role="special"><=</phrase><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> x<phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> y<phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>!(y < x)</computeroutput></simpara></listitem></varlistentry></variablelist></listitem><listitem><para><literallayout class="monospaced"><phrase role="keyword">template</phrase><phrase role="special"><</phrase><phrase role="keyword">typename</phrase> T<phrase role="special">,</phrase> <phrase role="identifier">std</phrase><phrase role="special">::</phrase><phrase role="identifier">size_t</phrase> N<phrase role="special">></phrase> |
| <phrase role="keyword">bool</phrase> <anchor id="boost.array.operator_=_id2"/><phrase role="keyword">operator</phrase><phrase role="special">>=</phrase><phrase role="special">(</phrase><phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> x<phrase role="special">,</phrase> <phrase role="keyword">const</phrase> <link linkend="boost.array">array</link><phrase role="special"><</phrase><phrase role="identifier">T</phrase><phrase role="special">,</phrase> <phrase role="identifier">N</phrase><phrase role="special">></phrase><phrase role="special">&</phrase> y<phrase role="special">)</phrase><phrase role="special">;</phrase></literallayout></para><variablelist spacing="compact"><?dbhtml |
| list-presentation="table" |
| ?><varlistentry><term>Returns:</term><listitem><simpara><computeroutput>!(x < y)</computeroutput></simpara></listitem></varlistentry></variablelist></listitem></orderedlist></refsect2></refsect1></refentry> |
| </section> |
| </section> |
| |
| <section id="array.rationale"> |
| <title>Design Rationale</title> |
| |
| <para>There was an important design tradeoff regarding the |
| constructors: We could implement array as an "aggregate" (see |
| Section 8.5.1, [dcl.init.aggr], of the C++ Standard). This would |
| mean: |
| <itemizedlist> |
| <listitem><simpara>An array can be initialized with a |
| brace-enclosing, comma-separated list of initializers for the |
| elements of the container, written in increasing subscript |
| order:</simpara> |
| |
| <programlisting xmlns:xi="http://www.w3.org/2001/XInclude"><computeroutput><link linkend="boost.array">boost::array</link></computeroutput><int,4> a = { { 1, 2, 3 } };</programlisting> |
| |
| <simpara>Note that if there are fewer elements in the |
| initializer list, then each remaining element gets |
| default-initialized (thus, it has a defined value).</simpara> |
| </listitem></itemizedlist></para> |
| |
| <para>However, this approach has its drawbacks: <emphasis role="bold"> passing no initializer list means that the elements |
| have an indetermined initial value</emphasis>, because the rule says |
| that aggregates may have: |
| <itemizedlist> |
| <listitem><simpara>No user-declared constructors.</simpara></listitem> |
| <listitem><simpara>No private or protected non-static data members.</simpara></listitem> |
| <listitem><simpara>No base classes.</simpara></listitem> |
| <listitem><simpara>No virtual functions.</simpara></listitem> |
| </itemizedlist> |
| </para> |
| |
| <para>Nevertheless, The current implementation uses this approach.</para> |
| |
| <para>Note that for standard conforming compilers it is possible to |
| use fewer braces (according to 8.5.1 (11) of the Standard). That is, |
| you can initialize an array as follows:</para> |
| |
| <programlisting xmlns:xi="http://www.w3.org/2001/XInclude"> |
| <computeroutput><link linkend="boost.array">boost::array</link></computeroutput><int,4> a = { 1, 2, 3 }; |
| </programlisting> |
| |
| <para>I'd appreciate any constructive feedback. <emphasis role="bold">Please note: I don't have time to read all boost |
| mails. Thus, to make sure that feedback arrives to me, please send |
| me a copy of each mail regarding this class.</emphasis></para> |
| |
| <para>The code is provided "as is" without expressed or implied |
| warranty.</para> |
| |
| </section> |
| |
| <section id="array.more.info"> |
| <title>For more information...</title> |
| <para>To find more details about using ordinary arrays in C++ and |
| the framework of the STL, see e.g. |
| |
| <literallayout>The C++ Standard Library - A Tutorial and Reference |
| by Nicolai M. Josuttis |
| Addison Wesley Longman, 1999 |
| ISBN 0-201-37926-0</literallayout> |
| </para> |
| |
| <para><ulink url="http://www.josuttis.com/">Home Page of Nicolai |
| Josuttis</ulink></para> |
| </section> |
| |
| <section id="array.ack"> |
| <title>Acknowledgements</title> |
| |
| <para>Doug Gregor ported the documentation to the BoostBook format.</para> |
| </section> |
| |
| |
| |
| </chapter> |
