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| <td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./sequences.html" class="navigation-link">Sequences</a> / <a href="./views.html" class="navigation-link">Views</a> / <a href="./transform-view.html" class="navigation-link">transform_view</a></td> |
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| <div class="section" id="transform-view"> |
| <h1><a class="toc-backref" href="./views.html#id1422">transform_view</a></h1> |
| <div class="section" id="id159"> |
| <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> |
| <pre class="literal-block"> |
| template< |
| typename Sequence |
| , typename F |
| > |
| struct <a href="./transform-view.html" class="identifier">transform_view</a> |
| { |
| // <em>unspecified</em> |
| // <em>...</em> |
| }; |
| </pre> |
| </div> |
| <div class="section" id="id160"> |
| <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> |
| <p>A view the full range of <tt class="literal"><span class="pre">Sequence</span></tt>'s transformed elements.</p> |
| </div> |
| <div class="section" id="id161"> |
| <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> |
| <pre class="literal-block"> |
| #include <<a href="../../../../boost/mpl/transform_view.hpp" class="header">boost/mpl/transform_view.hpp</a>> |
| </pre> |
| </div> |
| <div class="section" id="id162"> |
| <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3> |
| <ul class="simple"> |
| <li><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></li> |
| </ul> |
| </div> |
| <div class="section" id="id163"> |
| <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> |
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| <thead valign="bottom"> |
| <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 wrap.</td> |
| </tr> |
| <tr><td><tt class="literal"><span class="pre">F</span></tt></td> |
| <td>Unary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a></td> |
| <td>A transformation.</td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <div class="section" id="id164"> |
| <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> |
| <p>The semantics of an expression are defined only |
| where they differ from, or are not defined in <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>.</p> |
| <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="./transform-view.html" class="identifier">transform_view</a></span></tt>, <tt class="literal"><span class="pre">s</span></tt> is an arbitrary |
| <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>, and <tt class="literal"><span class="pre">f</span></tt> is an unary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a>.</p> |
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| <colgroup> |
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| <col width="63%" /> |
| </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="./transform-view.html" class="identifier">transform_view</a><s,f> |
| <a href="./transform-view.html" class="identifier">transform_view</a><s,f>::type |
| </pre> |
| </td> |
| <td>A lazy <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> such that for each <tt class="literal"><span class="pre">i</span></tt> in the |
| range [<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>) and each <tt class="literal"><span class="pre">j</span></tt> in for in the range |
| [<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>) <tt class="literal"><span class="pre"><a href="./deref.html" class="identifier">deref</a><i>::type</span></tt> is identical to |
| <tt class="literal"><span class="pre"><a href="./apply.html" class="identifier">apply</a><</span> <span class="pre">f,</span> <span class="pre"><a href="./deref.html" class="identifier">deref</a><j>::type</span> <span class="pre">>::type</span></tt>.</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>; |
| <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><v>::value</span> <span class="pre">==</span> <span class="pre"><a href="./size.html" class="identifier">size</a><s>::value</span></tt>; |
| linear complexity; see <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>.</td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <div class="section" id="id165"> |
| <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> |
| <p>Find the largest type in a sequence.</p> |
| <pre class="literal-block"> |
| typedef <a href="./vector.html" class="identifier">vector</a><int,long,char,char[50],double> types; |
| typedef <a href="./max-element.html" class="identifier">max_element</a>< |
| <a href="./transform-view.html" class="identifier">transform_view</a>< types, size_of<_> > |
| >::type iter; |
| |
| <a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( <a href="./deref.html" class="identifier">deref</a><iter>::type::value, ==, 50 ); |
| </pre> |
| </div> |
| <div class="section" id="id166"> |
| <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="./views.html">Views</a>, <a class="reference internal" href="./filter-view.html">filter_view</a>, <a class="reference internal" href="./joint-view.html">joint_view</a>, <a class="reference internal" href="./zip-view.html">zip_view</a>, <a class="reference internal" href="./iterator-range.html">iterator_range</a></p> |
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