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- <title>The MPL Reference Manual: vector</title>
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- <div class="section" id="vector">
- <h1><a class="toc-backref" href="./classes.html#id1406">vector</a></h1>
- <div class="section" id="id51">
- <h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
- <p><tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> is a <a class="reference internal" href="./variadic-sequence.html">variadic</a>, <a class="reference internal" href="./random-access-sequence.html">random access</a>, <a class="reference internal" href="./extensible-sequence.html">extensible</a> sequence of types that
- supports constant-time insertion and removal of elements at both ends, and
- linear-time insertion and removal of elements in the middle. On compilers that
- support the <tt class="literal"><span class="pre">typeof</span></tt> extension, <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> is the simplest and in many cases the
- most efficient sequence.</p>
- </div>
- <div class="section" id="header">
- <h3>Header</h3>
- <table border="1" class="docutils table">
- <colgroup>
- <col width="26%" />
- <col width="74%" />
- </colgroup>
- <thead valign="bottom">
- <tr><th class="head">Sequence form</th>
- <th class="head">Header</th>
- </tr>
- </thead>
- <tbody valign="top">
- <tr><td>Variadic</td>
- <td><tt class="literal"><span class="pre">#include <<a href="../../../../boost/mpl/vector.hpp" class="header">boost/mpl/vector.hpp</a>></span></tt></td>
- </tr>
- <tr><td>Numbered</td>
- <td><tt class="literal"><span class="pre">#include <boost/mpl/vector/vector</span></tt><em>n</em><tt class="literal"><span class="pre">.hpp></span></tt></td>
- </tr>
- </tbody>
- </table>
- </div>
- <div class="section" id="model-of">
- <h3>Model of</h3>
- <ul class="simple">
- <li><a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a></li>
- <li><a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a></li>
- <li><a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a></li>
- <li><a class="reference internal" href="./back-extensible-sequence.html">Back Extensible Sequence</a></li>
- <li><a class="reference internal" href="./front-extensible-sequence.html">Front Extensible Sequence</a></li>
- </ul>
- </div>
- <div class="section" id="id54">
- <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
- <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="./vector.html" class="identifier">vector</a></span></tt>, <tt class="literal"><span class="pre">pos</span></tt> and <tt class="literal"><span class="pre">last</span></tt> are iterators
- into <tt class="literal"><span class="pre">v</span></tt>, <tt class="literal"><span class="pre">r</span></tt> is a <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>, <tt class="literal"><span class="pre">n</span></tt> is an <a class="reference internal" href="./integral-constant.html">Integral Constant</a>, and <tt class="literal"><span class="pre">x</span></tt> and
- <em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub> are arbitrary types.</p>
- <table border="1" class="docutils table">
- <colgroup>
- <col width="40%" />
- <col width="60%" />
- </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="./vector.html" class="identifier">vector</a><<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>>
- <a href="./vector.html" class="identifier">vector</a><em>n</em><<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>>
- </pre>
- </td>
- <td><tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> of elements <em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>; see
- <a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a>.</td>
- </tr>
- <tr><td><pre class="first last literal-block">
- <a href="./vector.html" class="identifier">vector</a><<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>>::type
- <a href="./vector.html" class="identifier">vector</a><em>n</em><<em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub>>::type
- </pre>
- </td>
- <td>Identical to <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt><em>n</em><tt class="literal"><span class="pre"><</span></tt><em>t</em><sub>1</sub>,<em>t</em><sub>2</sub>,... <em>t</em><sub>n</sub><tt class="literal"><span class="pre">></span></tt>;
- see <a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><v>::type</span></tt></td>
- <td>An iterator pointing to the beginning of <tt class="literal"><span class="pre">v</span></tt>;
- see <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><v>::type</span></tt></td>
- <td>An iterator pointing to the end of <tt class="literal"><span class="pre">v</span></tt>;
- see <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><v>::type</span></tt></td>
- <td>The size of <tt class="literal"><span class="pre">v</span></tt>; see <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./empty.html" class="identifier">empty</a><v>::type</span></tt></td>
- <td>A boolean <a class="reference internal" href="./integral-constant.html">Integral Constant</a> <tt class="literal"><span class="pre">c</span></tt> such that
- <tt class="literal"><span class="pre">c::value</span> <span class="pre">==</span> <span class="pre">true</span></tt> if and only if the sequence is empty;
- see <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./front.html" class="identifier">front</a><v>::type</span></tt></td>
- <td>The first element in <tt class="literal"><span class="pre">v</span></tt>; see
- <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./back.html" class="identifier">back</a><v>::type</span></tt></td>
- <td>The last element in <tt class="literal"><span class="pre">v</span></tt>; see
- <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./at.html" class="identifier">at</a><v,n>::type</span></tt></td>
- <td>The <tt class="literal"><span class="pre">n</span></tt>th element from the beginning of <tt class="literal"><span class="pre">v</span></tt>; see
- <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./insert.html" class="identifier">insert</a><v,pos,x>::type</span></tt></td>
- <td>A new <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> of following elements:
- [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><v>::type</span></tt>, <tt class="literal"><span class="pre">pos</span></tt>), <tt class="literal"><span class="pre">x</span></tt>,
- [<tt class="literal"><span class="pre">pos</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><v>::type</span></tt>); see <a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./insert-range.html" class="identifier">insert_range</a><v,pos,r>::type</span></tt></td>
- <td>A new <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> of following elements:
- [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><v>::type</span></tt>, <tt class="literal"><span class="pre">pos</span></tt>),
- [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><r>::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><r>::type</span></tt>)
- [<tt class="literal"><span class="pre">pos</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><v>::type</span></tt>); see <a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./erase.html" class="identifier">erase</a><v,pos>::type</span></tt></td>
- <td>A new <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> of following elements:
- [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><v>::type</span></tt>, <tt class="literal"><span class="pre">pos</span></tt>),
- [<tt class="literal"><span class="pre"><a href="./next.html" class="identifier">next</a><pos>::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><v>::type</span></tt>); see
- <a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./erase.html" class="identifier">erase</a><v,pos,last>::type</span></tt></td>
- <td>A new <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> of following elements:
- [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><v>::type</span></tt>, <tt class="literal"><span class="pre">pos</span></tt>),
- [<tt class="literal"><span class="pre">last</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><v>::type</span></tt>); see <a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./clear.html" class="identifier">clear</a><v>::type</span></tt></td>
- <td>An empty <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt>; see <a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./push-back.html" class="identifier">push_back</a><v,x>::type</span></tt></td>
- <td>A new <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> of following elements:
- [<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>), <tt class="literal"><span class="pre">x</span></tt>;
- see <a class="reference internal" href="./back-extensible-sequence.html">Back Extensible Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./pop-back.html" class="identifier">pop_back</a><v>::type</span></tt></td>
- <td>A new <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> of following elements:
- [<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="./prior.html" class="identifier">prior</a><</span> <span class="pre"><a href="./end.html" class="identifier">end</a><v>::type</span> <span class="pre">>::type</span></tt>);
- see <a class="reference internal" href="./back-extensible-sequence.html">Back Extensible Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./push-front.html" class="identifier">push_front</a><v,x>::type</span></tt></td>
- <td>A new <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> of following elements:
- <tt class="literal"><span class="pre">x</span></tt>, [<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>); see <a class="reference internal" href="./front-extensible-sequence.html">Front Extensible Sequence</a>.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre"><a href="./pop-front.html" class="identifier">pop_front</a><v>::type</span></tt></td>
- <td>A new <tt class="literal"><span class="pre"><a href="./vector.html" class="identifier">vector</a></span></tt> of following elements:
- [<tt class="literal"><span class="pre"><a href="./next.html" class="identifier">next</a><</span> <span class="pre"><a href="./begin.html" class="identifier">begin</a><v>::type</span> <span class="pre">>::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><v>::type</span></tt>);
- see <a class="reference internal" href="./front-extensible-sequence.html">Front Extensible Sequence</a>.</td>
- </tr>
- </tbody>
- </table>
- </div>
- <div class="section" id="example">
- <h3>Example</h3>
- <pre class="literal-block">
- typedef <a href="./vector.html" class="identifier">vector</a><float,double,long double> floats;
- typedef <a href="./push-back.html" class="identifier">push_back</a><floats,int>::type types;
- <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same< <a href="./at-c.html" class="identifier">at_c</a><types,3>::type, int > ));
- </pre>
- </div>
- <div class="section" id="id55">
- <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="./variadic-sequence.html">Variadic Sequence</a>, <a class="reference internal" href="./random-access-sequence.html">Random Access Sequence</a>, <a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a>, <a class="reference internal" href="./vector-c.html">vector_c</a>, <a class="reference internal" href="./list.html">list</a></p>
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