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<li class="navelem"><a class="el" href="namespacedmlc.html">dmlc</a></li><li class="navelem"><a class="el" href="classdmlc_1_1array__view.html">array_view</a></li> </ul>
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<p>Read only data structure to reference continuous memory region of array. Provide unified view for vector, array and C style array. This data structure do not guarantee aliveness of referenced array.
<a href="classdmlc_1_1array__view.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="array__view_8h_source.html">array_view.h</a>&gt;</code></p>
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<tr class="memitem:aa2989cb96ead82941ca708f982eb1ecb"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#aa2989cb96ead82941ca708f982eb1ecb">array_view</a> ()=default</td></tr>
<tr class="memdesc:aa2989cb96ead82941ca708f982eb1ecb"><td class="mdescLeft">&#160;</td><td class="mdescRight">default constructor <a href="classdmlc_1_1array__view.html#aa2989cb96ead82941ca708f982eb1ecb">More...</a><br /></td></tr>
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<tr class="memitem:afbff522ab48074b7c23992d341505246"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#afbff522ab48074b7c23992d341505246">array_view</a> (const <a class="el" href="classdmlc_1_1array__view.html">array_view</a>&lt; ValueType &gt; &amp;other)=default</td></tr>
<tr class="memdesc:afbff522ab48074b7c23992d341505246"><td class="mdescLeft">&#160;</td><td class="mdescRight">default copy constructor <a href="classdmlc_1_1array__view.html#afbff522ab48074b7c23992d341505246">More...</a><br /></td></tr>
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<tr class="memitem:a3c36df13bed45d2d53aa987805cd432c"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#a3c36df13bed45d2d53aa987805cd432c">array_view</a> (<a class="el" href="classdmlc_1_1array__view.html">array_view</a>&lt; ValueType &gt; &amp;&amp;other)=default</td></tr>
<tr class="memdesc:a3c36df13bed45d2d53aa987805cd432c"><td class="mdescLeft">&#160;</td><td class="mdescRight">default move constructor <a href="classdmlc_1_1array__view.html#a3c36df13bed45d2d53aa987805cd432c">More...</a><br /></td></tr>
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<tr class="memitem:a41d5a5be90fb8113b54abf924b0ef3c0"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classdmlc_1_1array__view.html">array_view</a>&lt; ValueType &gt; &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#a41d5a5be90fb8113b54abf924b0ef3c0">operator=</a> (const <a class="el" href="classdmlc_1_1array__view.html">array_view</a>&lt; ValueType &gt; &amp;other)=default</td></tr>
<tr class="memdesc:a41d5a5be90fb8113b54abf924b0ef3c0"><td class="mdescLeft">&#160;</td><td class="mdescRight">default assign constructor <a href="classdmlc_1_1array__view.html#a41d5a5be90fb8113b54abf924b0ef3c0">More...</a><br /></td></tr>
<tr class="separator:a41d5a5be90fb8113b54abf924b0ef3c0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a307c58c244afdeda8abd5597b8d7ddc4"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#a307c58c244afdeda8abd5597b8d7ddc4">array_view</a> (const std::vector&lt; ValueType &gt; &amp;other)</td></tr>
<tr class="memdesc:a307c58c244afdeda8abd5597b8d7ddc4"><td class="mdescLeft">&#160;</td><td class="mdescRight">construct array view std::vector <a href="classdmlc_1_1array__view.html#a307c58c244afdeda8abd5597b8d7ddc4">More...</a><br /></td></tr>
<tr class="separator:a307c58c244afdeda8abd5597b8d7ddc4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae3f605a722b266dfcac991964fb74f7c"><td class="memTemplParams" colspan="2">template&lt;std::size_t size&gt; </td></tr>
<tr class="memitem:ae3f605a722b266dfcac991964fb74f7c"><td class="memTemplItemLeft" align="right" valign="top">&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#ae3f605a722b266dfcac991964fb74f7c">array_view</a> (const std::array&lt; ValueType, <a class="el" href="classdmlc_1_1array__view.html#af5ba06a92acbd6425bc86a6e7843c99d">size</a> &gt; &amp;other)</td></tr>
<tr class="memdesc:ae3f605a722b266dfcac991964fb74f7c"><td class="mdescLeft">&#160;</td><td class="mdescRight">construct array std::array <a href="classdmlc_1_1array__view.html#ae3f605a722b266dfcac991964fb74f7c">More...</a><br /></td></tr>
<tr class="separator:ae3f605a722b266dfcac991964fb74f7c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6d2423c90ee1c8adb1fab2be82a516e6"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#a6d2423c90ee1c8adb1fab2be82a516e6">array_view</a> (const ValueType *<a class="el" href="classdmlc_1_1array__view.html#a40cb7a315bd0ae1db67bb1d8eadbc66f">begin</a>, const ValueType *<a class="el" href="classdmlc_1_1array__view.html#a368ee235e2e9587a06b30102b48450b6">end</a>)</td></tr>
<tr class="memdesc:a6d2423c90ee1c8adb1fab2be82a516e6"><td class="mdescLeft">&#160;</td><td class="mdescRight">construct array view from continuous segment <a href="classdmlc_1_1array__view.html#a6d2423c90ee1c8adb1fab2be82a516e6">More...</a><br /></td></tr>
<tr class="separator:a6d2423c90ee1c8adb1fab2be82a516e6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af5ba06a92acbd6425bc86a6e7843c99d"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#af5ba06a92acbd6425bc86a6e7843c99d">size</a> () const</td></tr>
<tr class="separator:af5ba06a92acbd6425bc86a6e7843c99d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a40cb7a315bd0ae1db67bb1d8eadbc66f"><td class="memItemLeft" align="right" valign="top">const ValueType *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#a40cb7a315bd0ae1db67bb1d8eadbc66f">begin</a> () const</td></tr>
<tr class="separator:a40cb7a315bd0ae1db67bb1d8eadbc66f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a368ee235e2e9587a06b30102b48450b6"><td class="memItemLeft" align="right" valign="top">const ValueType *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#a368ee235e2e9587a06b30102b48450b6">end</a> () const</td></tr>
<tr class="separator:a368ee235e2e9587a06b30102b48450b6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac5dd843df7f5aa2c6ce3cbd13d12f42d"><td class="memItemLeft" align="right" valign="top">const ValueType &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1array__view.html#ac5dd843df7f5aa2c6ce3cbd13d12f42d">operator[]</a> (size_t i) const</td></tr>
<tr class="memdesc:ac5dd843df7f5aa2c6ce3cbd13d12f42d"><td class="mdescLeft">&#160;</td><td class="mdescRight">get i-th element from the view <a href="classdmlc_1_1array__view.html#ac5dd843df7f5aa2c6ce3cbd13d12f42d">More...</a><br /></td></tr>
<tr class="separator:ac5dd843df7f5aa2c6ce3cbd13d12f42d"><td class="memSeparator" colspan="2">&#160;</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 ValueType&gt;<br />
class dmlc::array_view&lt; ValueType &gt;</h3>
<p>Read only data structure to reference continuous memory region of array. Provide unified view for vector, array and C style array. This data structure do not guarantee aliveness of referenced array. </p>
<p>Make sure do not use <a class="el" href="classdmlc_1_1array__view.html" title="Read only data structure to reference continuous memory region of array. Provide unified view for vec...">array_view</a> to record data in async function closures. Also do not use <a class="el" href="classdmlc_1_1array__view.html" title="Read only data structure to reference continuous memory region of array. Provide unified view for vec...">array_view</a> to create reference to temporary data structure.</p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">ValueType</td><td>The value</td></tr>
</table>
</dd>
</dl>
<div class="fragment"><div class="line">std::vector&lt;int&gt; myvec{1,2,3};</div>
<div class="line"><a class="code" href="classdmlc_1_1array__view.html">dmlc::array_view&lt;int&gt;</a> view(myvec);</div>
<div class="line"><span class="comment">// indexed visit to the view.</span></div>
<div class="line">LOG(INFO) &lt;&lt; view[0];</div>
<div class="line"> </div>
<div class="line"><span class="keywordflow">for</span> (<span class="keywordtype">int</span> v : view) {</div>
<div class="line"> <span class="comment">// visit each element in the view</span></div>
<div class="line">}</div>
</div><!-- fragment --> </div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="aa2989cb96ead82941ca708f982eb1ecb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa2989cb96ead82941ca708f982eb1ecb">&#9670;&nbsp;</a></span>array_view() <span class="overload">[1/6]</span></h2>
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template&lt;typename ValueType &gt; </div>
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<td class="memname"><a class="el" href="classdmlc_1_1array__view.html">dmlc::array_view</a>&lt; ValueType &gt;::<a class="el" href="classdmlc_1_1array__view.html">array_view</a> </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
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</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">default</span></span> </td>
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<p>default constructor </p>
</div>
</div>
<a id="afbff522ab48074b7c23992d341505246"></a>
<h2 class="memtitle"><span class="permalink"><a href="#afbff522ab48074b7c23992d341505246">&#9670;&nbsp;</a></span>array_view() <span class="overload">[2/6]</span></h2>
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template&lt;typename ValueType &gt; </div>
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<td class="memname"><a class="el" href="classdmlc_1_1array__view.html">dmlc::array_view</a>&lt; ValueType &gt;::<a class="el" href="classdmlc_1_1array__view.html">array_view</a> </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classdmlc_1_1array__view.html">array_view</a>&lt; ValueType &gt; &amp;&#160;</td>
<td class="paramname"><em>other</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">default</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>default copy constructor </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">other</td><td>another array view. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="a3c36df13bed45d2d53aa987805cd432c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3c36df13bed45d2d53aa987805cd432c">&#9670;&nbsp;</a></span>array_view() <span class="overload">[3/6]</span></h2>
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template&lt;typename ValueType &gt; </div>
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<td class="memname"><a class="el" href="classdmlc_1_1array__view.html">dmlc::array_view</a>&lt; ValueType &gt;::<a class="el" href="classdmlc_1_1array__view.html">array_view</a> </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classdmlc_1_1array__view.html">array_view</a>&lt; ValueType &gt; &amp;&amp;&#160;</td>
<td class="paramname"><em>other</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">default</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>default move constructor </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">other</td><td>another array view. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="a307c58c244afdeda8abd5597b8d7ddc4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a307c58c244afdeda8abd5597b8d7ddc4">&#9670;&nbsp;</a></span>array_view() <span class="overload">[4/6]</span></h2>
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template&lt;typename ValueType &gt; </div>
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<td class="memname"><a class="el" href="classdmlc_1_1array__view.html">dmlc::array_view</a>&lt; ValueType &gt;::<a class="el" href="classdmlc_1_1array__view.html">array_view</a> </td>
<td>(</td>
<td class="paramtype">const std::vector&lt; ValueType &gt; &amp;&#160;</td>
<td class="paramname"><em>other</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>construct array view std::vector </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">other</td><td>vector container </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="ae3f605a722b266dfcac991964fb74f7c"></a>
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template&lt;typename ValueType &gt; </div>
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template&lt;std::size_t size&gt; </div>
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<tr>
<td class="mlabels-left">
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<td>(</td>
<td class="paramtype">const std::array&lt; ValueType, <a class="el" href="classdmlc_1_1array__view.html#af5ba06a92acbd6425bc86a6e7843c99d">size</a> &gt; &amp;&#160;</td>
<td class="paramname"><em>other</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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</div><div class="memdoc">
<p>construct array std::array </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">other</td><td>another array view. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="a6d2423c90ee1c8adb1fab2be82a516e6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6d2423c90ee1c8adb1fab2be82a516e6">&#9670;&nbsp;</a></span>array_view() <span class="overload">[6/6]</span></h2>
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template&lt;typename ValueType &gt; </div>
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<td class="memname"><a class="el" href="classdmlc_1_1array__view.html">dmlc::array_view</a>&lt; ValueType &gt;::<a class="el" href="classdmlc_1_1array__view.html">array_view</a> </td>
<td>(</td>
<td class="paramtype">const ValueType *&#160;</td>
<td class="paramname"><em>begin</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const ValueType *&#160;</td>
<td class="paramname"><em>end</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<p>construct array view from continuous segment </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">begin</td><td>beginning pointre </td></tr>
<tr><td class="paramname">end</td><td>end pointer </td></tr>
</table>
</dd>
</dl>
</div>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a40cb7a315bd0ae1db67bb1d8eadbc66f">&#9670;&nbsp;</a></span>begin()</h2>
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template&lt;typename ValueType &gt; </div>
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<td class="memname">const ValueType* <a class="el" href="classdmlc_1_1array__view.html">dmlc::array_view</a>&lt; ValueType &gt;::begin </td>
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<dl class="section return"><dt>Returns</dt><dd>begin of the array </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a368ee235e2e9587a06b30102b48450b6">&#9670;&nbsp;</a></span>end()</h2>
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<dl class="section return"><dt>Returns</dt><dd>end point of the array </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a41d5a5be90fb8113b54abf924b0ef3c0">&#9670;&nbsp;</a></span>operator=()</h2>
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<td class="memname"><a class="el" href="classdmlc_1_1array__view.html">array_view</a>&lt;ValueType&gt;&amp; <a class="el" href="classdmlc_1_1array__view.html">dmlc::array_view</a>&lt; ValueType &gt;::operator= </td>
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<td class="paramtype">const <a class="el" href="classdmlc_1_1array__view.html">array_view</a>&lt; ValueType &gt; &amp;&#160;</td>
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<p>default assign constructor </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">other</td><td>another array view. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>self. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ac5dd843df7f5aa2c6ce3cbd13d12f42d">&#9670;&nbsp;</a></span>operator[]()</h2>
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<td class="memname">const ValueType&amp; <a class="el" href="classdmlc_1_1array__view.html">dmlc::array_view</a>&lt; ValueType &gt;::operator[] </td>
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<p>get i-th element from the view </p>
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<tr><td class="paramname">i</td><td>The index. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>const reference to i-th element. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#af5ba06a92acbd6425bc86a6e7843c99d">&#9670;&nbsp;</a></span>size()</h2>
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<td class="memname">size_t <a class="el" href="classdmlc_1_1array__view.html">dmlc::array_view</a>&lt; ValueType &gt;::size </td>
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<dl class="section return"><dt>Returns</dt><dd>size of the array </dd></dl>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>/work/mxnet/3rdparty/dmlc-core/include/dmlc/<a class="el" href="array__view_8h_source.html">array_view.h</a></li>
</ul>
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<div class="ttc" id="aclassdmlc_1_1array__view_html"><div class="ttname"><a href="classdmlc_1_1array__view.html">dmlc::array_view</a></div><div class="ttdoc">Read only data structure to reference continuous memory region of array. Provide unified view for vec...</div><div class="ttdef"><b>Definition:</b> array_view.h:36</div></div>
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