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<li class="navelem"><a class="el" href="namespaceentt.html">entt</a></li><li class="navelem"><a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a></li> </ul>
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<div class="headertitle"><div class="title">entt::basic_snapshot_loader&lt; Registry &gt; Class Template Reference</div></div>
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<p>Utility class to restore a snapshot as a whole.
<a href="classentt_1_1basic__snapshot__loader.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="pub-types" name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:ac462fe9061f89d529833bdbc62919bca"><td class="memItemLeft" align="right" valign="top">using&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1basic__snapshot__loader.html#ac462fe9061f89d529833bdbc62919bca">registry_type</a> = Registry</td></tr>
<tr class="separator:ac462fe9061f89d529833bdbc62919bca"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a21dff5a44dc7ee611a39d9517c8af96e"><td class="memItemLeft" align="right" valign="top">using&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1basic__snapshot__loader.html#a21dff5a44dc7ee611a39d9517c8af96e">entity_type</a> = typename registry_type::entity_type</td></tr>
<tr class="memdesc:a21dff5a44dc7ee611a39d9517c8af96e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Underlying entity identifier. <br /></td></tr>
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Public Member Functions</h2></td></tr>
<tr class="memitem:a1a3aa9874823320812d8c75336942623"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1basic__snapshot__loader.html#a1a3aa9874823320812d8c75336942623">basic_snapshot_loader</a> (<a class="el" href="classentt_1_1basic__snapshot__loader.html#ac462fe9061f89d529833bdbc62919bca">registry_type</a> &amp;source) noexcept</td></tr>
<tr class="memdesc:a1a3aa9874823320812d8c75336942623"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs an instance that is bound to a given registry. <br /></td></tr>
<tr class="separator:a1a3aa9874823320812d8c75336942623"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6f975e36c5ae7e84bedf315201e4e763"><td class="memItemLeft" align="right" valign="top"><a id="a6f975e36c5ae7e84bedf315201e4e763" name="a6f975e36c5ae7e84bedf315201e4e763"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>basic_snapshot_loader</b> (<a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp;&amp;) noexcept=default</td></tr>
<tr class="memdesc:a6f975e36c5ae7e84bedf315201e4e763"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default move constructor. <br /></td></tr>
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<tr class="memitem:ac7653702c1ae5d81510d3ea338fb5c4a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1basic__snapshot__loader.html#ac7653702c1ae5d81510d3ea338fb5c4a">operator=</a> (<a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp;&amp;) noexcept=default</td></tr>
<tr class="memdesc:ac7653702c1ae5d81510d3ea338fb5c4a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default move assignment operator. <br /></td></tr>
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<tr class="memitem:a395cd08d4fe6dca759ae400d5584ef88"><td class="memTemplParams" colspan="2">template&lt;typename Type , typename Archive &gt; </td></tr>
<tr class="memitem:a395cd08d4fe6dca759ae400d5584ef88"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classentt_1_1basic__snapshot__loader.html#a395cd08d4fe6dca759ae400d5584ef88">get</a> (Archive &amp;archive, const <a class="el" href="namespaceentt.html#a13e040e7b38a8f86d1ab2f096f37b627">id_type</a> id=<a class="el" href="structentt_1_1type__hash.html">type_hash</a>&lt; Type &gt;::value())</td></tr>
<tr class="memdesc:a395cd08d4fe6dca759ae400d5584ef88"><td class="mdescLeft">&#160;</td><td class="mdescRight">Restores all elements of a type with associated identifiers. <br /></td></tr>
<tr class="separator:a395cd08d4fe6dca759ae400d5584ef88"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a14d8d01e376758aa4aafe53401f96649"><td class="memTemplParams" colspan="2">template&lt;typename Archive &gt; </td></tr>
<tr class="memitem:a14d8d01e376758aa4aafe53401f96649"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classentt_1_1basic__snapshot__loader.html#a14d8d01e376758aa4aafe53401f96649">entities</a> (Archive &amp;archive)</td></tr>
<tr class="memdesc:a14d8d01e376758aa4aafe53401f96649"><td class="mdescLeft">&#160;</td><td class="mdescRight">Restores all identifiers, including those to be recycled. <br /></td></tr>
<tr class="separator:a14d8d01e376758aa4aafe53401f96649"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1239b687ec0c386c49fb81ee9c58eea8"><td class="memTemplParams" colspan="2">template&lt;typename... Component, typename Archive &gt; </td></tr>
<tr class="memitem:a1239b687ec0c386c49fb81ee9c58eea8"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classentt_1_1basic__snapshot__loader.html#a1239b687ec0c386c49fb81ee9c58eea8">component</a> (Archive &amp;archive)</td></tr>
<tr class="memdesc:a1239b687ec0c386c49fb81ee9c58eea8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Restores all elements of a type with associated identifiers. <br /></td></tr>
<tr class="separator:a1239b687ec0c386c49fb81ee9c58eea8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad37932c98a812596d40456bd4610e535"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1basic__snapshot__loader.html#ad37932c98a812596d40456bd4610e535">orphans</a> ()</td></tr>
<tr class="memdesc:ad37932c98a812596d40456bd4610e535"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destroys those entities that have no components. <br /></td></tr>
<tr class="separator:ad37932c98a812596d40456bd4610e535"><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"><div class="compoundTemplParams">template&lt;typename Registry&gt;<br />
class entt::basic_snapshot_loader&lt; Registry &gt;</div><p>Utility class to restore a snapshot as a whole. </p>
<p>A snapshot loader requires that the destination registry be empty and loads all the data at once while keeping intact the identifiers that the entities originally had.<br />
An example of use is the implementation of a save/restore utility.</p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">Registry</td><td>Basic registry type. </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="snapshot_8hpp_source.html#l00197">197</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
</div><h2 class="groupheader">Member Typedef Documentation</h2>
<a id="a21dff5a44dc7ee611a39d9517c8af96e" name="a21dff5a44dc7ee611a39d9517c8af96e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a21dff5a44dc7ee611a39d9517c8af96e">&#9670;&#160;</a></span>entity_type</h2>
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<div class="memtemplate">
template&lt;typename Registry &gt; </div>
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<td class="memname">using <a class="el" href="classentt_1_1basic__snapshot__loader.html">entt::basic_snapshot_loader</a>&lt; Registry &gt;::entity_type = typename registry_type::entity_type</td>
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<p>Underlying entity identifier. </p>
<p class="definition">Definition at line <a class="el" href="snapshot_8hpp_source.html#l00205">205</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac462fe9061f89d529833bdbc62919bca">&#9670;&#160;</a></span>registry_type</h2>
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template&lt;typename Registry &gt; </div>
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<td class="memname">using <a class="el" href="classentt_1_1basic__snapshot__loader.html">entt::basic_snapshot_loader</a>&lt; Registry &gt;::registry_type = Registry</td>
</tr>
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<p>Basic registry type. </p>
<p class="definition">Definition at line <a class="el" href="snapshot_8hpp_source.html#l00203">203</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
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<h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a1a3aa9874823320812d8c75336942623">&#9670;&#160;</a></span>basic_snapshot_loader()</h2>
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template&lt;typename Registry &gt; </div>
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<td class="memname"><a class="el" href="classentt_1_1basic__snapshot__loader.html">entt::basic_snapshot_loader</a>&lt; Registry &gt;::basic_snapshot_loader </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classentt_1_1basic__snapshot__loader.html#ac462fe9061f89d529833bdbc62919bca">registry_type</a> &amp;&#160;</td>
<td class="paramname"><em>source</em></td><td>)</td>
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">noexcept</span></span> </td>
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<p>Constructs an instance that is bound to a given registry. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">source</td><td>A valid reference to a registry. </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="snapshot_8hpp_source.html#l00211">211</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="a1239b687ec0c386c49fb81ee9c58eea8" name="a1239b687ec0c386c49fb81ee9c58eea8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1239b687ec0c386c49fb81ee9c58eea8">&#9670;&#160;</a></span>component()</h2>
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template&lt;typename Registry &gt; </div>
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template&lt;typename... Component, typename Archive &gt; </div>
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<td class="memname"><a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp; <a class="el" href="classentt_1_1basic__snapshot__loader.html">entt::basic_snapshot_loader</a>&lt; Registry &gt;::component </td>
<td>(</td>
<td class="paramtype">Archive &amp;&#160;</td>
<td class="paramname"><em>archive</em></td><td>)</td>
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<p>Restores all elements of a type with associated identifiers. </p>
<p>The template parameter list must be exactly the same used during serialization.</p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">Component</td><td>Type of component to restore. </td></tr>
<tr><td class="paramname">Archive</td><td>Type of input archive. </td></tr>
</table>
</dd>
</dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">archive</td><td>A valid reference to an input archive. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>A valid loader to continue restoring data. </dd></dl>
<p class="definition">Definition at line <a class="el" href="snapshot_8hpp_source.html#l00294">294</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a14d8d01e376758aa4aafe53401f96649">&#9670;&#160;</a></span>entities()</h2>
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template&lt;typename Registry &gt; </div>
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template&lt;typename Archive &gt; </div>
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<td class="memname"><a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp; <a class="el" href="classentt_1_1basic__snapshot__loader.html">entt::basic_snapshot_loader</a>&lt; Registry &gt;::entities </td>
<td>(</td>
<td class="paramtype">Archive &amp;&#160;</td>
<td class="paramname"><em>archive</em></td><td>)</td>
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<p>Restores all identifiers, including those to be recycled. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">Archive</td><td>Type of input archive. </td></tr>
</table>
</dd>
</dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">archive</td><td>A valid reference to an input archive. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>A valid loader to continue restoring data. </dd></dl>
<p class="definition">Definition at line <a class="el" href="snapshot_8hpp_source.html#l00278">278</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a395cd08d4fe6dca759ae400d5584ef88">&#9670;&#160;</a></span>get()</h2>
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template&lt;typename Registry &gt; </div>
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template&lt;typename Type , typename Archive &gt; </div>
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<td class="paramtype">const <a class="el" href="namespaceentt.html#a13e040e7b38a8f86d1ab2f096f37b627">id_type</a>&#160;</td>
<td class="paramname"><em>id</em> = <code><a class="el" href="structentt_1_1type__hash.html">type_hash</a>&lt;Type&gt;::value()</code>&#160;</td>
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<td>)</td>
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<p>Restores all elements of a type with associated identifiers. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">Type</td><td>Type of elements to restore. </td></tr>
<tr><td class="paramname">Archive</td><td>Type of input archive. </td></tr>
</table>
</dd>
</dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">archive</td><td>A valid reference to an input archive. </td></tr>
<tr><td class="paramname">id</td><td>Optional name used to map the storage within the registry. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>A valid loader to continue restoring data. </dd></dl>
<p class="definition">Definition at line <a class="el" href="snapshot_8hpp_source.html#l00232">232</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac7653702c1ae5d81510d3ea338fb5c4a">&#9670;&#160;</a></span>operator=()</h2>
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template&lt;typename Registry &gt; </div>
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<td class="memname"><a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp; <a class="el" href="classentt_1_1basic__snapshot__loader.html">entt::basic_snapshot_loader</a>&lt; Registry &gt;::operator= </td>
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<p>Default move assignment operator. </p>
<dl class="section return"><dt>Returns</dt><dd>This loader. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ad37932c98a812596d40456bd4610e535">&#9670;&#160;</a></span>orphans()</h2>
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template&lt;typename Registry &gt; </div>
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<td class="memname"><a class="el" href="classentt_1_1basic__snapshot__loader.html">basic_snapshot_loader</a> &amp; <a class="el" href="classentt_1_1basic__snapshot__loader.html">entt::basic_snapshot_loader</a>&lt; Registry &gt;::orphans </td>
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<p>Destroys those entities that have no components. </p>
<p>In case all the entities were serialized but only part of the components was saved, it could happen that some of the entities have no components once restored.<br />
This function helps to identify and destroy those entities.</p>
<dl class="section return"><dt>Returns</dt><dd>A valid loader to continue restoring data. </dd></dl>
<p class="definition">Definition at line <a class="el" href="snapshot_8hpp_source.html#l00308">308</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li>src/entt/entity/<a class="el" href="entity_2fwd_8hpp_source.html">fwd.hpp</a></li>
<li>src/entt/entity/<a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a></li>
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