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<div class="title">dereference_iterator_adaptor&lt; Iterator, DFn &gt; Class Template Reference<div class="ingroups"><a class="el" href="group___pixel_iterator.html">Pixel Iterator</a> &raquo; <a class="el" href="group___pixel_iterator_model.html">Models</a> &raquo; <a class="el" href="group___pixel_iterator_model_deref_ptr.html">dereference_iterator_adaptor</a><a class="el" href="group___pixel_based.html">PixelBased</a> &raquo;  &#124; <a class="el" href="group___pixel_based_model.html">Models</a></div></div>  </div>
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<p>An adaptor over an existing iterator that provides for custom filter on dereferencing the object. Models: <a class="el" href="structboost_1_1gil_1_1_iterator_adaptor_concept.html" title="Iterator adaptor is a forward iterator adapting another forward iterator.">IteratorAdaptorConcept</a>, <a class="el" href="structboost_1_1gil_1_1_pixel_iterator_concept.html" title="An STL random access traversal iterator over a model of PixelConcept.">PixelIteratorConcept</a>.  
 <a href="classboost_1_1gil_1_1dereference__iterator__adaptor.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="pixel__iterator__adaptor_8hpp_source.html">pixel_iterator_adaptor.hpp</a>&gt;</code></p>

<p>Inherits iterator_adaptor&lt; dereference_iterator_adaptor&lt; Iterator, DFn &gt;, Iterator, DFn::value_type, std::iterator_traits&lt; Iterator &gt;::iterator_category, DFn::reference, use_default &gt;.</p>
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Public Types</h2></td></tr>
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using&#160;</td><td class="memItemRight" valign="bottom"><b>parent_t</b> = iterator_adaptor&lt; <a class="el" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>&lt; Iterator, DFn &gt;, Iterator, typename DFn::value_type, typename std::iterator_traits&lt; Iterator &gt;::iterator_category, typename DFn::reference, use_default &gt;</td></tr>
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using&#160;</td><td class="memItemRight" valign="bottom"><b>reference</b> = typename DFn::result_type</td></tr>
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using&#160;</td><td class="memItemRight" valign="bottom"><b>difference_type</b> = typename std::iterator_traits&lt; Iterator &gt;::difference_type</td></tr>
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using&#160;</td><td class="memItemRight" valign="bottom"><b>dereference_fn</b> = DFn</td></tr>
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template&lt;typename Iterator1 &gt; </td></tr>
<tr class="memitem:ae603117ffecbd1fd86134750912c788d"><td class="memTemplItemLeft" align="right" valign="top">&#160;</td><td class="memTemplItemRight" valign="bottom"><b>dereference_iterator_adaptor</b> (const <a class="el" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>&lt; Iterator1, DFn &gt; &amp;dit)</td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><b>dereference_iterator_adaptor</b> (Iterator it, DFn deref_fn=DFn())</td></tr>
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template&lt;typename Iterator1 , typename DFn1 &gt; </td></tr>
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<tr class="memitem:a16d8e6857dd561244ca73764f2b94801"><td class="memItemLeft" align="right" valign="top">reference&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html#a16d8e6857dd561244ca73764f2b94801">operator[]</a> (difference_type d) const</td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><b>operator&gt;</b> (const <a class="el" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a> &amp;p) const</td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><b>operator&lt;</b> (const <a class="el" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a> &amp;p) const</td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><b>operator&gt;=</b> (const <a class="el" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a> &amp;p) const</td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><b>operator&lt;=</b> (const <a class="el" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a> &amp;p) const</td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><b>operator==</b> (const <a class="el" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a> &amp;p) const</td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><b>operator!=</b> (const <a class="el" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a> &amp;p) const</td></tr>
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Iterator &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>base</b> ()</td></tr>
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const Iterator &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>base</b> () const</td></tr>
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const DFn &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>deref_fn</b> () const</td></tr>
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template&lt;typename Iterator1 , typename DFn1 &gt; </td></tr>
<tr class="memitem:a9b6eaaf690db4e105597700f278147f8"><td class="memTemplItemLeft" align="right" valign="top">class&#160;</td><td class="memTemplItemRight" valign="bottom"><b>dereference_iterator_adaptor</b></td></tr>
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class&#160;</td><td class="memItemRight" valign="bottom"><b>boost::iterator_core_access</b></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;typename Iterator, typename DFn&gt;<br />
class boost::gil::dereference_iterator_adaptor&lt; Iterator, DFn &gt;</h3>

<p>An adaptor over an existing iterator that provides for custom filter on dereferencing the object. Models: <a class="el" href="structboost_1_1gil_1_1_iterator_adaptor_concept.html" title="Iterator adaptor is a forward iterator adapting another forward iterator.">IteratorAdaptorConcept</a>, <a class="el" href="structboost_1_1gil_1_1_pixel_iterator_concept.html" title="An STL random access traversal iterator over a model of PixelConcept.">PixelIteratorConcept</a>. </p>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a id="a16d8e6857dd561244ca73764f2b94801"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a16d8e6857dd561244ca73764f2b94801">&#9670;&nbsp;</a></span>operator[]()</h2>

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          <td class="memname">reference operator[] </td>
          <td>(</td>
          <td class="paramtype">difference_type&#160;</td>
          <td class="paramname"><em>d</em></td><td>)</td>
          <td> const</td>
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<p>For some reason operator[] provided by iterator_facade returns a custom class that is convertible to reference We require our own reference because it is registered in iterator_traits </p>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="pixel__iterator__adaptor_8hpp_source.html">pixel_iterator_adaptor.hpp</a></li>
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