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<title>&nbsp; Apache Ignite C++: ignite::ConstReference&lt; T &gt; Class Template Reference</title>
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<li class="navelem"><a class="el" href="namespaceignite.html">ignite</a></li><li class="navelem"><a class="el" href="classignite_1_1ConstReference.html">ConstReference</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">ignite::ConstReference&lt; T &gt; Class Template Reference</div> </div>
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<p>Constant <a class="el" href="classignite_1_1Reference.html" title="Reference class. ">Reference</a> class.
<a href="classignite_1_1ConstReference.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="reference_8h_source.html">reference.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a63f63927e65aea9923eb6b207352d7e3"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a63f63927e65aea9923eb6b207352d7e3"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1ConstReference.html#a63f63927e65aea9923eb6b207352d7e3">ConstReference</a> ()</td></tr>
<tr class="memdesc:a63f63927e65aea9923eb6b207352d7e3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default constructor. <br /></td></tr>
<tr class="separator:a63f63927e65aea9923eb6b207352d7e3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6ea08f582e635a46f00a7c97f323118d"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1ConstReference.html#a6ea08f582e635a46f00a7c97f323118d">ConstReference</a> (common::ConstReferenceImplBase *ptr, ptrdiff_t offset=0)</td></tr>
<tr class="memdesc:a6ea08f582e635a46f00a7c97f323118d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <a href="#a6ea08f582e635a46f00a7c97f323118d">More...</a><br /></td></tr>
<tr class="separator:a6ea08f582e635a46f00a7c97f323118d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a95beded1e753e6d23535304d5c3c09ea"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1ConstReference.html#a95beded1e753e6d23535304d5c3c09ea">ConstReference</a> (const <a class="el" href="classignite_1_1ConstReference.html">ConstReference</a> &amp;other)</td></tr>
<tr class="memdesc:a95beded1e753e6d23535304d5c3c09ea"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy constructor. <a href="#a95beded1e753e6d23535304d5c3c09ea">More...</a><br /></td></tr>
<tr class="separator:a95beded1e753e6d23535304d5c3c09ea"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab9d8957625a01e494bf2d931c84a0bbb"><td class="memTemplParams" colspan="2">template&lt;typename T2 &gt; </td></tr>
<tr class="memitem:ab9d8957625a01e494bf2d931c84a0bbb"><td class="memTemplItemLeft" align="right" valign="top">&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classignite_1_1ConstReference.html#ab9d8957625a01e494bf2d931c84a0bbb">ConstReference</a> (const <a class="el" href="classignite_1_1ConstReference.html">ConstReference</a>&lt; T2 &gt; &amp;other)</td></tr>
<tr class="memdesc:ab9d8957625a01e494bf2d931c84a0bbb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy constructor. <a href="#ab9d8957625a01e494bf2d931c84a0bbb">More...</a><br /></td></tr>
<tr class="separator:ab9d8957625a01e494bf2d931c84a0bbb"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a32b372113f08ffa0bd798613dd7bef8e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classignite_1_1ConstReference.html">ConstReference</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1ConstReference.html#a32b372113f08ffa0bd798613dd7bef8e">operator=</a> (const <a class="el" href="classignite_1_1ConstReference.html">ConstReference</a> &amp;other)</td></tr>
<tr class="memdesc:a32b372113f08ffa0bd798613dd7bef8e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assignment operator. <a href="#a32b372113f08ffa0bd798613dd7bef8e">More...</a><br /></td></tr>
<tr class="separator:a32b372113f08ffa0bd798613dd7bef8e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a407552c66ea32aa700e6523832f6efb6"><td class="memTemplParams" colspan="2">template&lt;typename T2 &gt; </td></tr>
<tr class="memitem:a407552c66ea32aa700e6523832f6efb6"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="classignite_1_1ConstReference.html">ConstReference</a> &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classignite_1_1ConstReference.html#a407552c66ea32aa700e6523832f6efb6">operator=</a> (const <a class="el" href="classignite_1_1ConstReference.html">ConstReference</a>&lt; T2 &gt; &amp;other)</td></tr>
<tr class="memdesc:a407552c66ea32aa700e6523832f6efb6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assignment operator. <a href="#a407552c66ea32aa700e6523832f6efb6">More...</a><br /></td></tr>
<tr class="separator:a407552c66ea32aa700e6523832f6efb6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8969e0b386401978058310d6dc2a126f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a8969e0b386401978058310d6dc2a126f"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1ConstReference.html#a8969e0b386401978058310d6dc2a126f">~ConstReference</a> ()</td></tr>
<tr class="memdesc:a8969e0b386401978058310d6dc2a126f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:a8969e0b386401978058310d6dc2a126f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1328b74243e12ccddd0fdbc2b81ebe88"><td class="memItemLeft" align="right" valign="top">const T *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1ConstReference.html#a1328b74243e12ccddd0fdbc2b81ebe88">Get</a> () const </td></tr>
<tr class="memdesc:a1328b74243e12ccddd0fdbc2b81ebe88"><td class="mdescLeft">&#160;</td><td class="mdescRight">Dereference the pointer. <a href="#a1328b74243e12ccddd0fdbc2b81ebe88">More...</a><br /></td></tr>
<tr class="separator:a1328b74243e12ccddd0fdbc2b81ebe88"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab23dcbb1d85082d3e51f8e21cff45bff"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classignite_1_1ConstReference.html#ab23dcbb1d85082d3e51f8e21cff45bff">IsNull</a> () const </td></tr>
<tr class="memdesc:ab23dcbb1d85082d3e51f8e21cff45bff"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if the pointer is null. <a href="#ab23dcbb1d85082d3e51f8e21cff45bff">More...</a><br /></td></tr>
<tr class="separator:ab23dcbb1d85082d3e51f8e21cff45bff"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="friends"></a>
Friends</h2></td></tr>
<tr class="memitem:ab2c55e7aa5fe57077e40bf1007ab6968"><td class="memTemplParams" colspan="2"><a class="anchor" id="ab2c55e7aa5fe57077e40bf1007ab6968"></a>
template&lt;typename &gt; </td></tr>
<tr class="memitem:ab2c55e7aa5fe57077e40bf1007ab6968"><td class="memTemplItemLeft" align="right" valign="top">class&#160;</td><td class="memTemplItemRight" valign="bottom"><b>ConstReference</b></td></tr>
<tr class="separator:ab2c55e7aa5fe57077e40bf1007ab6968"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7aaef6ece6e3d6910d5919fa1544a99a"><td class="memTemplParams" colspan="2"><a class="anchor" id="a7aaef6ece6e3d6910d5919fa1544a99a"></a>
template&lt;typename &gt; </td></tr>
<tr class="memitem:a7aaef6ece6e3d6910d5919fa1544a99a"><td class="memTemplItemLeft" align="right" valign="top">class&#160;</td><td class="memTemplItemRight" valign="bottom"><b>Reference</b></td></tr>
<tr class="separator:a7aaef6ece6e3d6910d5919fa1544a99a"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;typename T&gt;<br />
class ignite::ConstReference&lt; T &gt;</h3>
<p>Constant <a class="el" href="classignite_1_1Reference.html" title="Reference class. ">Reference</a> class. </p>
<p>Abstraction on any reference-type object, from simple raw pointers and references to standard library smart pointers. Provides only constant access to the underlying data.</p>
<p>There are no requirements for the template type T. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a class="anchor" id="a6ea08f582e635a46f00a7c97f323118d"></a>
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template&lt;typename T&gt; </div>
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<td class="mlabels-left">
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<td class="memname"><a class="el" href="classignite_1_1ConstReference.html">ignite::ConstReference</a>&lt; T &gt;::<a class="el" href="classignite_1_1ConstReference.html">ConstReference</a> </td>
<td>(</td>
<td class="paramtype">common::ConstReferenceImplBase *&#160;</td>
<td class="paramname"><em>ptr</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">ptrdiff_t&#160;</td>
<td class="paramname"><em>offset</em> = <code>0</code>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">explicit</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Constructor. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ptr</td><td><a class="el" href="classignite_1_1ConstReference.html" title="Constant Reference class. ">ConstReference</a> class implementation. </td></tr>
<tr><td class="paramname">offset</td><td>Pointer offset. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="a95beded1e753e6d23535304d5c3c09ea"></a>
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template&lt;typename T&gt; </div>
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<tr>
<td class="mlabels-left">
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<tr>
<td class="memname"><a class="el" href="classignite_1_1ConstReference.html">ignite::ConstReference</a>&lt; T &gt;::<a class="el" href="classignite_1_1ConstReference.html">ConstReference</a> </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classignite_1_1ConstReference.html">ConstReference</a>&lt; T &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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<p>Copy constructor. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">other</td><td>Another instance. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ab9d8957625a01e494bf2d931c84a0bbb"></a>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T&gt; </div>
<div class="memtemplate">
template&lt;typename T2 &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classignite_1_1ConstReference.html">ignite::ConstReference</a>&lt; T &gt;::<a class="el" href="classignite_1_1ConstReference.html">ConstReference</a> </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classignite_1_1ConstReference.html">ConstReference</a>&lt; T2 &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>Copy constructor. </p>
<p>Constant reference of type T2 should be static-castable to constant reference of type T.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">other</td><td>Another instance. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a class="anchor" id="a1328b74243e12ccddd0fdbc2b81ebe88"></a>
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template&lt;typename T&gt; </div>
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<td class="memname">const T* <a class="el" href="classignite_1_1ConstReference.html">ignite::ConstReference</a>&lt; T &gt;::Get </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</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>Dereference the pointer. </p>
<p>If the pointer is null then this operation causes undefined behaviour.</p>
<dl class="section return"><dt>Returns</dt><dd>Constant reference to underlying value. </dd></dl>
</div>
</div>
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template&lt;typename T&gt; </div>
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<td class="memname">bool <a class="el" href="classignite_1_1ConstReference.html">ignite::ConstReference</a>&lt; T &gt;::IsNull </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</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>Check if the pointer is null. </p>
<dl class="section return"><dt>Returns</dt><dd>True if the value is null. </dd></dl>
</div>
</div>
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template&lt;typename T&gt; </div>
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<tr>
<td class="memname"><a class="el" href="classignite_1_1ConstReference.html">ConstReference</a>&amp; <a class="el" href="classignite_1_1ConstReference.html">ignite::ConstReference</a>&lt; T &gt;::operator= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classignite_1_1ConstReference.html">ConstReference</a>&lt; T &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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<p>Assignment operator. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">other</td><td>Another instance. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
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template&lt;typename T&gt; </div>
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template&lt;typename T2 &gt; </div>
<table class="mlabels">
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<td class="memname"><a class="el" href="classignite_1_1ConstReference.html">ConstReference</a>&amp; <a class="el" href="classignite_1_1ConstReference.html">ignite::ConstReference</a>&lt; T &gt;::operator= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classignite_1_1ConstReference.html">ConstReference</a>&lt; T2 &gt; &amp;&#160;</td>
<td class="paramname"><em>other</em></td><td>)</td>
<td></td>
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<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<p>Assignment operator. </p>
<p>Constant reference of type T2 should be static-castable to constant reference of type T.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">other</td><td>Another instance. </td></tr>
</table>
</dd>
</dl>
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