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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_1SnapshotLoader.html">SnapshotLoader</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">entt::SnapshotLoader&lt; Entity &gt; Class Template Reference<span class="mlabels"><span class="mlabel">final</span></span></div> </div>
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<p>Utility class to restore a snapshot as a whole.
<a href="classentt_1_1SnapshotLoader.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 name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a7cc32b25447bf6d13ac36a814e446f4c"><td class="memItemLeft" align="right" valign="top"><a id="a7cc32b25447bf6d13ac36a814e446f4c"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1SnapshotLoader.html#a7cc32b25447bf6d13ac36a814e446f4c">SnapshotLoader</a> (const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;)=delete</td></tr>
<tr class="memdesc:a7cc32b25447bf6d13ac36a814e446f4c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copying a snapshot loader isn't allowed. <br /></td></tr>
<tr class="separator:a7cc32b25447bf6d13ac36a814e446f4c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad20cadc8bb3699629cb3ae54bf07b39a"><td class="memItemLeft" align="right" valign="top"><a id="ad20cadc8bb3699629cb3ae54bf07b39a"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1SnapshotLoader.html#ad20cadc8bb3699629cb3ae54bf07b39a">SnapshotLoader</a> (<a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;&amp;)=default</td></tr>
<tr class="memdesc:ad20cadc8bb3699629cb3ae54bf07b39a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default move constructor. <br /></td></tr>
<tr class="separator:ad20cadc8bb3699629cb3ae54bf07b39a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad1f8a300b9c5ccf0598cd90ab0e0062f"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1SnapshotLoader.html#ad1f8a300b9c5ccf0598cd90ab0e0062f">operator=</a> (const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;)=delete</td></tr>
<tr class="memdesc:ad1f8a300b9c5ccf0598cd90ab0e0062f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copying a snapshot loader isn't allowed. <a href="#ad1f8a300b9c5ccf0598cd90ab0e0062f">More...</a><br /></td></tr>
<tr class="separator:ad1f8a300b9c5ccf0598cd90ab0e0062f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a69ed990a8a614e5a1cb90960c216784b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1SnapshotLoader.html#a69ed990a8a614e5a1cb90960c216784b">operator=</a> (<a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;&amp;)=default</td></tr>
<tr class="memdesc:a69ed990a8a614e5a1cb90960c216784b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default move assignment operator. <a href="#a69ed990a8a614e5a1cb90960c216784b">More...</a><br /></td></tr>
<tr class="separator:a69ed990a8a614e5a1cb90960c216784b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7bff030b50995a78f79217eecfb90535"><td class="memTemplParams" colspan="2">template&lt;typename Archive &gt; </td></tr>
<tr class="memitem:a7bff030b50995a78f79217eecfb90535"><td class="memTemplItemLeft" align="right" valign="top">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classentt_1_1SnapshotLoader.html#a7bff030b50995a78f79217eecfb90535">entities</a> (Archive &amp;archive) const</td></tr>
<tr class="memdesc:a7bff030b50995a78f79217eecfb90535"><td class="mdescLeft">&#160;</td><td class="mdescRight">Restores entities that were in use during serialization. <a href="#a7bff030b50995a78f79217eecfb90535">More...</a><br /></td></tr>
<tr class="separator:a7bff030b50995a78f79217eecfb90535"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a094ec796643b2c7422533c24e80963f3"><td class="memTemplParams" colspan="2">template&lt;typename Archive &gt; </td></tr>
<tr class="memitem:a094ec796643b2c7422533c24e80963f3"><td class="memTemplItemLeft" align="right" valign="top">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classentt_1_1SnapshotLoader.html#a094ec796643b2c7422533c24e80963f3">destroyed</a> (Archive &amp;archive) const</td></tr>
<tr class="memdesc:a094ec796643b2c7422533c24e80963f3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Restores entities that were destroyed during serialization. <a href="#a094ec796643b2c7422533c24e80963f3">More...</a><br /></td></tr>
<tr class="separator:a094ec796643b2c7422533c24e80963f3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a03f291aa5216eab207780f785a75bbba"><td class="memTemplParams" colspan="2">template&lt;typename... Component, typename Archive &gt; </td></tr>
<tr class="memitem:a03f291aa5216eab207780f785a75bbba"><td class="memTemplItemLeft" align="right" valign="top">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classentt_1_1SnapshotLoader.html#a03f291aa5216eab207780f785a75bbba">component</a> (Archive &amp;archive) const</td></tr>
<tr class="memdesc:a03f291aa5216eab207780f785a75bbba"><td class="mdescLeft">&#160;</td><td class="mdescRight">Restores components and assigns them to the right entities. <a href="#a03f291aa5216eab207780f785a75bbba">More...</a><br /></td></tr>
<tr class="separator:a03f291aa5216eab207780f785a75bbba"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afc4964c76a8fc7a8a1c6a435babc796f"><td class="memTemplParams" colspan="2">template&lt;typename... Tag, typename Archive &gt; </td></tr>
<tr class="memitem:afc4964c76a8fc7a8a1c6a435babc796f"><td class="memTemplItemLeft" align="right" valign="top">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classentt_1_1SnapshotLoader.html#afc4964c76a8fc7a8a1c6a435babc796f">tag</a> (Archive &amp;archive) const</td></tr>
<tr class="memdesc:afc4964c76a8fc7a8a1c6a435babc796f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Restores tags and assigns them to the right entities. <a href="#afc4964c76a8fc7a8a1c6a435babc796f">More...</a><br /></td></tr>
<tr class="separator:afc4964c76a8fc7a8a1c6a435babc796f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a70e3af34bfacf921a2579b1d0055ceca"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1SnapshotLoader.html#a70e3af34bfacf921a2579b1d0055ceca">orphans</a> () const</td></tr>
<tr class="memdesc:a70e3af34bfacf921a2579b1d0055ceca"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destroys those entities that have neither components nor tags. <a href="#a70e3af34bfacf921a2579b1d0055ceca">More...</a><br /></td></tr>
<tr class="separator:a70e3af34bfacf921a2579b1d0055ceca"><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:a200646cfe88496da691aab5f61c0fa69"><td class="memItemLeft" align="right" valign="top"><a id="a200646cfe88496da691aab5f61c0fa69"></a>
class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classentt_1_1SnapshotLoader.html#a200646cfe88496da691aab5f61c0fa69">Registry&lt; Entity &gt;</a></td></tr>
<tr class="memdesc:a200646cfe88496da691aab5f61c0fa69"><td class="mdescLeft">&#160;</td><td class="mdescRight">A registry is allowed to create snapshot loaders. <br /></td></tr>
<tr class="separator:a200646cfe88496da691aab5f61c0fa69"><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 Entity&gt;<br />
class entt::SnapshotLoader&lt; Entity &gt;</h3>
<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">Entity</td><td>A valid entity type (see <a class="el" href="structentt_1_1entt__traits.html" title="Entity traits. ">entt_traits</a> for more details). </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="snapshot_8hpp_source.html#l00261">261</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a id="a03f291aa5216eab207780f785a75bbba"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a03f291aa5216eab207780f785a75bbba">&#9670;&nbsp;</a></span>component()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename Entity &gt; </div>
<div class="memtemplate">
template&lt;typename... Component, typename Archive &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a>&amp; <a class="el" href="classentt_1_1SnapshotLoader.html">entt::SnapshotLoader</a>&lt; Entity &gt;::component </td>
<td>(</td>
<td class="paramtype">Archive &amp;&#160;</td>
<td class="paramname"><em>archive</em></td><td>)</td>
<td> const</td>
</tr>
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</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<p>Restores components and assigns them to the right entities. </p>
<p>The template parameter list must be exactly the same used during serialization. In the event that the entity to which the component is assigned doesn't exist yet, the loader will take care to create it with the version it originally had.</p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">Component</td><td>Types of components 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#l00361">361</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
</div>
</div>
<a id="a094ec796643b2c7422533c24e80963f3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a094ec796643b2c7422533c24e80963f3">&#9670;&nbsp;</a></span>destroyed()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename Entity &gt; </div>
<div class="memtemplate">
template&lt;typename Archive &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a>&amp; <a class="el" href="classentt_1_1SnapshotLoader.html">entt::SnapshotLoader</a>&lt; Entity &gt;::destroyed </td>
<td>(</td>
<td class="paramtype">Archive &amp;&#160;</td>
<td class="paramname"><em>archive</em></td><td>)</td>
<td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<p>Restores entities that were destroyed during serialization. </p>
<p>This function restores the entities that were destroyed during serialization and gives them the versions they originally had.</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#l00341">341</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
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<a id="a7bff030b50995a78f79217eecfb90535"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a7bff030b50995a78f79217eecfb90535">&#9670;&nbsp;</a></span>entities()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename Entity &gt; </div>
<div class="memtemplate">
template&lt;typename Archive &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a>&amp; <a class="el" href="classentt_1_1SnapshotLoader.html">entt::SnapshotLoader</a>&lt; Entity &gt;::entities </td>
<td>(</td>
<td class="paramtype">Archive &amp;&#160;</td>
<td class="paramname"><em>archive</em></td><td>)</td>
<td> const</td>
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<span class="mlabels"><span class="mlabel">inline</span></span> </td>
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<p>Restores entities that were in use during serialization. </p>
<p>This function restores the entities that were in use during serialization and gives them the versions they originally had.</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#l00324">324</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
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<a id="ad1f8a300b9c5ccf0598cd90ab0e0062f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad1f8a300b9c5ccf0598cd90ab0e0062f">&#9670;&nbsp;</a></span>operator=() <span class="overload">[1/2]</span></h2>
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template&lt;typename Entity &gt; </div>
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<td class="memname"><a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a>&amp; <a class="el" href="classentt_1_1SnapshotLoader.html">entt::SnapshotLoader</a>&lt; Entity &gt;::operator= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a>&lt; Entity &gt; &amp;&#160;</td>
<td class="paramname"></td><td>)</td>
<td></td>
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<span class="mlabels"><span class="mlabel">delete</span></span> </td>
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<p>Copying a snapshot loader isn't allowed. </p>
<dl class="section return"><dt>Returns</dt><dd>This loader. </dd></dl>
</div>
</div>
<a id="a69ed990a8a614e5a1cb90960c216784b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a69ed990a8a614e5a1cb90960c216784b">&#9670;&nbsp;</a></span>operator=() <span class="overload">[2/2]</span></h2>
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template&lt;typename Entity &gt; </div>
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<td class="memname"><a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a>&amp; <a class="el" href="classentt_1_1SnapshotLoader.html">entt::SnapshotLoader</a>&lt; Entity &gt;::operator= </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a>&lt; Entity &gt; &amp;&amp;&#160;</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
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<span class="mlabels"><span class="mlabel">default</span></span> </td>
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<p>Default move assignment operator. </p>
<dl class="section return"><dt>Returns</dt><dd>This loader. </dd></dl>
</div>
</div>
<a id="a70e3af34bfacf921a2579b1d0055ceca"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a70e3af34bfacf921a2579b1d0055ceca">&#9670;&nbsp;</a></span>orphans()</h2>
<div class="memitem">
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template&lt;typename Entity &gt; </div>
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<td class="memname">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a>&amp; <a class="el" href="classentt_1_1SnapshotLoader.html">entt::SnapshotLoader</a>&lt; Entity &gt;::orphans </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Destroys those entities that have neither components nor tags. </p>
<p>In case all the entities were serialized but only part of the components and tags was saved, it could happen that some of the entities have neither components nor tags once restored.<br />
This functions 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#l00399">399</a> of file <a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a>.</p>
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<a id="afc4964c76a8fc7a8a1c6a435babc796f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#afc4964c76a8fc7a8a1c6a435babc796f">&#9670;&nbsp;</a></span>tag()</h2>
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template&lt;typename Entity &gt; </div>
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template&lt;typename... Tag, typename Archive &gt; </div>
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<td class="memname">const <a class="el" href="classentt_1_1SnapshotLoader.html">SnapshotLoader</a>&amp; <a class="el" href="classentt_1_1SnapshotLoader.html">entt::SnapshotLoader</a>&lt; Entity &gt;::tag </td>
<td>(</td>
<td class="paramtype">Archive &amp;&#160;</td>
<td class="paramname"><em>archive</em></td><td>)</td>
<td> const</td>
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<p>Restores tags and assigns them to the right entities. </p>
<p>The template parameter list must be exactly the same used during serialization. In the event that the entity to which the tag is assigned doesn't exist yet, the loader will take care to create it with the version it originally had.</p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
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<tr><td class="paramname">Tag</td><td>Types of tags to restore. </td></tr>
<tr><td class="paramname">Archive</td><td>Type of input archive. </td></tr>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">archive</td><td>A valid reference to an input archive. </td></tr>
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<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#l00382">382</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 file:<ul>
<li>src/entt/entity/<a class="el" href="snapshot_8hpp_source.html">snapshot.hpp</a></li>
</ul>
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