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- <h1><a class="toc-backref" href="./querying-algorithms.html#id1483">max_element</a></h1>
- <div class="section" id="id599">
- <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3>
- <pre class="literal-block">
- template<
- typename Sequence
- , typename Pred = <a href="./less.html" class="identifier">less</a><<a href="./placeholders.html" class="identifier">_1</a>,<a href="./placeholders.html" class="identifier">_2</a>>
- >
- struct <a href="./max-element.html" class="identifier">max_element</a>
- {
- typedef <em>unspecified</em> type;
- };
- </pre>
- </div>
- <div class="section" id="id600">
- <h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
- <p>Returns an iterator to the largest element in <tt class="literal"><span class="pre">Sequence</span></tt>.</p>
- </div>
- <div class="section" id="id601">
- <h3><a class="subsection-title" href="#header" name="header">Header</a></h3>
- <pre class="literal-block">
- #include <<a href="../../../../boost/mpl/max_element.hpp" class="header">boost/mpl/max_element.hpp</a>>
- </pre>
- </div>
- <div class="section" id="id602">
- <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3>
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- <tr><th class="head">Parameter</th>
- <th class="head">Requirement</th>
- <th class="head">Description</th>
- </tr>
- </thead>
- <tbody valign="top">
- <tr><td><tt class="literal"><span class="pre">Sequence</span></tt></td>
- <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
- <td>A sequence to be searched.</td>
- </tr>
- <tr><td><tt class="literal"><span class="pre">Pred</span></tt></td>
- <td>Binary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a></td>
- <td>A comparison criteria.</td>
- </tr>
- </tbody>
- </table>
- </div>
- <div class="section" id="id603">
- <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
- <p>For any <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> <tt class="literal"><span class="pre">s</span></tt> and binary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a> <tt class="literal"><span class="pre">pred</span></tt>:</p>
- <pre class="literal-block">
- typedef <a href="./max-element.html" class="identifier">max_element</a><s,pred>::type i;
- </pre>
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- <tbody valign="top">
- <tr class="field"><th class="field-name">Return type:</th><td class="field-body"><p class="first"><a class="reference internal" href="./forward-iterator.html">Forward Iterator</a>.</p>
- </td>
- </tr>
- <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first"><tt class="literal"><span class="pre">i</span></tt> is the first iterator in [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><s>::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><s>::type</span></tt>) such that for every iterator <tt class="literal"><span class="pre">j</span></tt>
- in [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><s>::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><s>::type</span></tt>),</p>
- <pre class="last literal-block">
- <a href="./apply.html" class="identifier">apply</a>< pred, <a href="./deref.html" class="identifier">deref</a><i>::type, <a href="./deref.html" class="identifier">deref</a><j>::type >::type::value == false
- </pre>
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- </table>
- </div>
- <div class="section" id="id604">
- <h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3>
- <p>Linear. Zero comparisons if <tt class="literal"><span class="pre">s</span></tt> is empty, otherwise exactly <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><s>::value</span> <span class="pre">-</span> <span class="pre">1</span></tt>
- comparisons.</p>
- </div>
- <div class="section" id="id605">
- <h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
- <pre class="literal-block">
- typedef <a href="./vector.html" class="identifier">vector</a><bool,char[50],long,double> types;
- typedef <a href="./max-element.html" class="identifier">max_element</a><
- <a href="./transform-view.html" class="identifier">transform_view</a>< types,<a href="./sizeof.html" class="identifier">sizeof_</a><<a href="./placeholders.html" class="identifier">_1</a>> >
- >::type iter;
- <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same< <a href="./deref.html" class="identifier">deref</a><iter::base>::type, char[50]> ));
- </pre>
- </div>
- <div class="section" id="id606">
- <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
- <p><a class="reference internal" href="./querying-algorithms.html">Querying Algorithms</a>, <a class="reference internal" href="./min-element.html">min_element</a>, <a class="reference internal" href="./find-if.html">find_if</a>, <a class="reference internal" href="./upper-bound.html">upper_bound</a>, <a class="reference internal" href="./find.html">find</a></p>
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