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Michele Caini 7cf7699bab API reference v3.12.0
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<li class="navelem"><a class="el" href="namespaceentt.html">entt</a></li><li class="navelem"><a class="el" href="structentt_1_1meta__data.html">meta_data</a></li> </ul>
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<a href="#pub-types">Public Types</a> &#124;
<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="headertitle"><div class="title">entt::meta_data Struct Reference</div></div>
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<p>Opaque wrapper for data members.
<a href="structentt_1_1meta__data.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="meta_8hpp_source.html">meta.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:a312216483707bb667c8bf833eee0dff9"><td class="memItemLeft" align="right" valign="top">using&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#a312216483707bb667c8bf833eee0dff9">size_type</a> = typename internal::meta_data_node::size_type</td></tr>
<tr class="memdesc:a312216483707bb667c8bf833eee0dff9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Unsigned integer type. <br /></td></tr>
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</table><table class="memberdecls">
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Public Member Functions</h2></td></tr>
<tr class="memitem:af3c07a198d8b9396bf8a70364d668b9c"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#af3c07a198d8b9396bf8a70364d668b9c">meta_data</a> () noexcept</td></tr>
<tr class="memdesc:af3c07a198d8b9396bf8a70364d668b9c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default constructor. <br /></td></tr>
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<tr class="memitem:ae20aa5d5f917f006c5b717858c2f8943"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#ae20aa5d5f917f006c5b717858c2f8943">meta_data</a> (const <a class="el" href="classentt_1_1meta__ctx.html">meta_ctx</a> &amp;area, const internal::meta_data_node &amp;curr) noexcept</td></tr>
<tr class="memdesc:ae20aa5d5f917f006c5b717858c2f8943"><td class="mdescLeft">&#160;</td><td class="mdescRight">Context aware constructor for meta objects. <br /></td></tr>
<tr class="separator:ae20aa5d5f917f006c5b717858c2f8943"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a898b9be5e2a435fb3f9e4d5243275451"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structentt_1_1meta__data.html#a312216483707bb667c8bf833eee0dff9">size_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#a898b9be5e2a435fb3f9e4d5243275451">arity</a> () const noexcept</td></tr>
<tr class="memdesc:a898b9be5e2a435fb3f9e4d5243275451"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the number of setters available. <br /></td></tr>
<tr class="separator:a898b9be5e2a435fb3f9e4d5243275451"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a148f106584bfdd2bb33591d790c4a1c1"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#a148f106584bfdd2bb33591d790c4a1c1">is_const</a> () const noexcept</td></tr>
<tr class="memdesc:a148f106584bfdd2bb33591d790c4a1c1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Indicates whether a data member is constant or not. <br /></td></tr>
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<tr class="memitem:adeddff29e0b47f621f1bc77cb9d2be80"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#adeddff29e0b47f621f1bc77cb9d2be80">is_static</a> () const noexcept</td></tr>
<tr class="memdesc:adeddff29e0b47f621f1bc77cb9d2be80"><td class="mdescLeft">&#160;</td><td class="mdescRight">Indicates whether a data member is static or not. <br /></td></tr>
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<tr class="memitem:aa81980c2d202f511ec8afcb8b324afb4"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1meta__type.html">meta_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#aa81980c2d202f511ec8afcb8b324afb4">type</a> () const noexcept</td></tr>
<tr class="memdesc:aa81980c2d202f511ec8afcb8b324afb4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the object type if any, <code>type_id&lt;void&gt;()</code> otherwise. <br /></td></tr>
<tr class="separator:aa81980c2d202f511ec8afcb8b324afb4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9cec301b83378b11ad316663e8ece835"><td class="memTemplParams" colspan="2">template&lt;typename Type &gt; </td></tr>
<tr class="memitem:a9cec301b83378b11ad316663e8ece835"><td class="memTemplItemLeft" align="right" valign="top">bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#a9cec301b83378b11ad316663e8ece835">set</a> (<a class="el" href="structentt_1_1meta__handle.html">meta_handle</a> instance, Type &amp;&amp;value) const</td></tr>
<tr class="memdesc:a9cec301b83378b11ad316663e8ece835"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sets the value of a given variable. <br /></td></tr>
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<tr class="memitem:a754da41b4c8057f7c9a3ff4738935d04"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1meta__any.html">meta_any</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#a754da41b4c8057f7c9a3ff4738935d04">get</a> (<a class="el" href="structentt_1_1meta__handle.html">meta_handle</a> instance) const</td></tr>
<tr class="memdesc:a754da41b4c8057f7c9a3ff4738935d04"><td class="mdescLeft">&#160;</td><td class="mdescRight">Gets the value of a given variable. <br /></td></tr>
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<tr class="memitem:a5cc9cb64699384eb010cd1abe220a2f4"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1meta__type.html">meta_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#a5cc9cb64699384eb010cd1abe220a2f4">arg</a> (const <a class="el" href="structentt_1_1meta__data.html#a312216483707bb667c8bf833eee0dff9">size_type</a> index) const noexcept</td></tr>
<tr class="memdesc:a5cc9cb64699384eb010cd1abe220a2f4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the type accepted by the i-th setter. <br /></td></tr>
<tr class="separator:a5cc9cb64699384eb010cd1abe220a2f4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8dc86b923a3a2c46e0077d0222529696"><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespaceentt.html#a19a0f990ac8ad302430ef72224fb02eb">meta_range</a>&lt; <a class="el" href="structentt_1_1meta__prop.html">meta_prop</a>, typename decltype(internal::meta_data_node::prop)::const_iterator &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#a8dc86b923a3a2c46e0077d0222529696">prop</a> () const noexcept</td></tr>
<tr class="memdesc:a8dc86b923a3a2c46e0077d0222529696"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns a range to visit registered meta properties. <br /></td></tr>
<tr class="separator:a8dc86b923a3a2c46e0077d0222529696"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a66cf4f9de4950b6cccada44832c77c35"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structentt_1_1meta__prop.html">meta_prop</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#a66cf4f9de4950b6cccada44832c77c35">prop</a> (const <a class="el" href="namespaceentt.html#a13e040e7b38a8f86d1ab2f096f37b627">id_type</a> key) const</td></tr>
<tr class="memdesc:a66cf4f9de4950b6cccada44832c77c35"><td class="mdescLeft">&#160;</td><td class="mdescRight">Lookup utility for meta properties. <br /></td></tr>
<tr class="separator:a66cf4f9de4950b6cccada44832c77c35"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1127923d5d2f1c59af5e739c95f4798a"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#a1127923d5d2f1c59af5e739c95f4798a">operator bool</a> () const noexcept</td></tr>
<tr class="memdesc:a1127923d5d2f1c59af5e739c95f4798a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns true if an object is valid, false otherwise. <br /></td></tr>
<tr class="separator:a1127923d5d2f1c59af5e739c95f4798a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9316b0562ce25724c72a271344d856ca"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structentt_1_1meta__data.html#a9316b0562ce25724c72a271344d856ca">operator==</a> (const <a class="el" href="structentt_1_1meta__data.html">meta_data</a> &amp;other) const noexcept</td></tr>
<tr class="memdesc:a9316b0562ce25724c72a271344d856ca"><td class="mdescLeft">&#160;</td><td class="mdescRight">Checks if two objects refer to the same type. <br /></td></tr>
<tr class="separator:a9316b0562ce25724c72a271344d856ca"><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"><p>Opaque wrapper for data members. </p>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00817">817</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
</div><h2 class="groupheader">Member Typedef Documentation</h2>
<a id="a312216483707bb667c8bf833eee0dff9" name="a312216483707bb667c8bf833eee0dff9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a312216483707bb667c8bf833eee0dff9">&#9670;&#160;</a></span>size_type</h2>
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<td class="memname">using <a class="el" href="structentt_1_1meta__data.html#a312216483707bb667c8bf833eee0dff9">entt::meta_data::size_type</a> = typename internal::meta_data_node::size_type</td>
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<p>Unsigned integer type. </p>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00819">819</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
</div>
</div>
<h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="af3c07a198d8b9396bf8a70364d668b9c" name="af3c07a198d8b9396bf8a70364d668b9c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af3c07a198d8b9396bf8a70364d668b9c">&#9670;&#160;</a></span>meta_data() <span class="overload">[1/2]</span></h2>
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<td class="memname">entt::meta_data::meta_data </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
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<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">noexcept</span></span> </td>
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<p>Default constructor. </p>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00822">822</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<a id="ae20aa5d5f917f006c5b717858c2f8943" name="ae20aa5d5f917f006c5b717858c2f8943"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae20aa5d5f917f006c5b717858c2f8943">&#9670;&#160;</a></span>meta_data() <span class="overload">[2/2]</span></h2>
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<td>(</td>
<td class="paramtype">const <a class="el" href="classentt_1_1meta__ctx.html">meta_ctx</a> &amp;&#160;</td>
<td class="paramname"><em>area</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const internal::meta_data_node &amp;&#160;</td>
<td class="paramname"><em>curr</em>&#160;</td>
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<td>)</td>
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<p>Context aware constructor for meta objects. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">area</td><td>The context from which to search for meta types. </td></tr>
<tr><td class="paramname">curr</td><td>The underlying node with which to construct the instance. </td></tr>
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</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00831">831</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="a5cc9cb64699384eb010cd1abe220a2f4" name="a5cc9cb64699384eb010cd1abe220a2f4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5cc9cb64699384eb010cd1abe220a2f4">&#9670;&#160;</a></span>arg()</h2>
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<td class="memname"><a class="el" href="classentt_1_1meta__type.html">meta_type</a> entt::meta_data::arg </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="structentt_1_1meta__data.html#a312216483707bb667c8bf833eee0dff9">size_type</a>&#160;</td>
<td class="paramname"><em>index</em></td><td>)</td>
<td> const</td>
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<p>Returns the type accepted by the i-th setter. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">index</td><td>Index of the setter of which to return the accepted type. </td></tr>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The type accepted by the i-th setter. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l01643">1643</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a898b9be5e2a435fb3f9e4d5243275451">&#9670;&#160;</a></span>arity()</h2>
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<td class="memname"><a class="el" href="structentt_1_1meta__data.html#a312216483707bb667c8bf833eee0dff9">size_type</a> entt::meta_data::arity </td>
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<td class="paramname"></td><td>)</td>
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<p>Returns the number of setters available. </p>
<dl class="section return"><dt>Returns</dt><dd>The number of setters available. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00839">839</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a754da41b4c8057f7c9a3ff4738935d04">&#9670;&#160;</a></span>get()</h2>
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<td class="memname"><a class="el" href="classentt_1_1meta__any.html">meta_any</a> entt::meta_data::get </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structentt_1_1meta__handle.html">meta_handle</a>&#160;</td>
<td class="paramname"><em>instance</em></td><td>)</td>
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<p>Gets the value of a given variable. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">instance</td><td>An opaque instance of the underlying type. </td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>A wrapper containing the value of the underlying variable. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00879">879</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a148f106584bfdd2bb33591d790c4a1c1">&#9670;&#160;</a></span>is_const()</h2>
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<p>Indicates whether a data member is constant or not. </p>
<dl class="section return"><dt>Returns</dt><dd>True if the data member is constant, false otherwise. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00847">847</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#adeddff29e0b47f621f1bc77cb9d2be80">&#9670;&#160;</a></span>is_static()</h2>
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<p>Indicates whether a data member is static or not. </p>
<dl class="section return"><dt>Returns</dt><dd>True if the data member is static, false otherwise. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00855">855</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a1127923d5d2f1c59af5e739c95f4798a">&#9670;&#160;</a></span>operator bool()</h2>
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<p>Returns true if an object is valid, false otherwise. </p>
<dl class="section return"><dt>Returns</dt><dd>True if the object is valid, false otherwise. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00912">912</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9316b0562ce25724c72a271344d856ca">&#9670;&#160;</a></span>operator==()</h2>
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<td class="memname">bool entt::meta_data::operator== </td>
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<p>Checks if two objects refer to the same type. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">other</td><td>The object with which to compare. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>True if the objects refer to the same type, false otherwise. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00917">917</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a8dc86b923a3a2c46e0077d0222529696">&#9670;&#160;</a></span>prop() <span class="overload">[1/2]</span></h2>
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<td class="memname"><a class="el" href="namespaceentt.html#a19a0f990ac8ad302430ef72224fb02eb">meta_range</a>&lt; <a class="el" href="structentt_1_1meta__prop.html">meta_prop</a>, typename decltype(internal::meta_data_node::prop)::const_iterator &gt; entt::meta_data::prop </td>
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<p>Returns a range to visit registered meta properties. </p>
<dl class="section return"><dt>Returns</dt><dd>An iterable range to visit registered meta properties. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00894">894</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a66cf4f9de4950b6cccada44832c77c35">&#9670;&#160;</a></span>prop() <span class="overload">[2/2]</span></h2>
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<td class="memname"><a class="el" href="structentt_1_1meta__prop.html">meta_prop</a> entt::meta_data::prop </td>
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<p>Lookup utility for meta properties. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>The key to use to search for a property. </td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>The registered meta property for the given key, if any. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00903">903</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9cec301b83378b11ad316663e8ece835">&#9670;&#160;</a></span>set()</h2>
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<p>Sets the value of a given variable. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
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<tr><td class="paramname">Type</td><td>Type of value to assign. </td></tr>
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</dd>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">instance</td><td>An opaque instance of the underlying type. </td></tr>
<tr><td class="paramname">value</td><td>Parameter to use to set the underlying variable. </td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>True in case of success, false otherwise. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00870">870</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aa81980c2d202f511ec8afcb8b324afb4">&#9670;&#160;</a></span>type()</h2>
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<td class="memname"><a class="el" href="classentt_1_1meta__type.html">meta_type</a> entt::meta_data::type </td>
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<p>Returns the object type if any, <code>type_id&lt;void&gt;()</code> otherwise. </p>
<dl class="section return"><dt>Returns</dt><dd>The object type if any, <code>type_id&lt;void&gt;()</code> otherwise. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l01639">1639</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>src/entt/meta/<a class="el" href="meta_8hpp_source.html">meta.hpp</a></li>
</ul>
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