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entt/structentt_1_1meta__func.html
Michele Caini 1e23a11311 API reference v3.15.0
2025-03-19 15:49:42 +01:00

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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__func.html">meta_func</a></li> </ul>
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<a href="#pub-types">Public Types</a> &#124;
<a href="#pub-methods">Public Member Functions</a> &#124;
<a href="structentt_1_1meta__func-members.html">List of all members</a> </div>
<div class="headertitle"><div class="title">entt::meta_func Struct Reference</div></div>
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<p>Opaque wrapper for member functions.
<a href="#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:a422ec572c7c56d3cb46d09704be64f65" id="r_a422ec572c7c56d3cb46d09704be64f65"><td class="memItemLeft" align="right" valign="top">using&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a422ec572c7c56d3cb46d09704be64f65">size_type</a> = typename internal::meta_func_node::size_type</td></tr>
<tr class="memdesc:a422ec572c7c56d3cb46d09704be64f65"><td class="mdescLeft">&#160;</td><td class="mdescRight">Unsigned integer type. <br /></td></tr>
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Public Member Functions</h2></td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><b>meta_func</b> () noexcept=default</td></tr>
<tr class="memdesc:a4d90c32da75cd41f8b4692431b6a07ae"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default constructor. <br /></td></tr>
<tr class="separator:a4d90c32da75cd41f8b4692431b6a07ae"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9885a8438083912faa40038c45ee7a53" id="r_a9885a8438083912faa40038c45ee7a53"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a9885a8438083912faa40038c45ee7a53">meta_func</a> (const <a class="el" href="classentt_1_1meta__ctx.html">meta_ctx</a> &amp;area, internal::meta_func_node curr) noexcept</td></tr>
<tr class="memdesc:a9885a8438083912faa40038c45ee7a53"><td class="mdescLeft">&#160;</td><td class="mdescRight">Context aware constructor for meta objects. <br /></td></tr>
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<tr class="memitem:ae4b3fd3397828894d1a8e9df4d69ad6e" id="r_ae4b3fd3397828894d1a8e9df4d69ad6e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="#a422ec572c7c56d3cb46d09704be64f65">size_type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ae4b3fd3397828894d1a8e9df4d69ad6e">arity</a> () const noexcept</td></tr>
<tr class="memdesc:ae4b3fd3397828894d1a8e9df4d69ad6e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the number of arguments accepted by a member function. <br /></td></tr>
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<tr class="memdesc:a8a935c3b78d74afbc953bdcfabe12d4b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Indicates whether a member function is constant or not. <br /></td></tr>
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<tr class="memitem:a143a54f1f653717762ac43622eab5a99" id="r_a143a54f1f653717762ac43622eab5a99"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a143a54f1f653717762ac43622eab5a99">is_static</a> () const noexcept</td></tr>
<tr class="memdesc:a143a54f1f653717762ac43622eab5a99"><td class="mdescLeft">&#160;</td><td class="mdescRight">Indicates whether a member function is static or not. <br /></td></tr>
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<tr class="memitem:a63fd4cf3b926de060c847f7b60c2c28a" id="r_a63fd4cf3b926de060c847f7b60c2c28a"><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="#a63fd4cf3b926de060c847f7b60c2c28a">ret</a> () const noexcept</td></tr>
<tr class="memdesc:a63fd4cf3b926de060c847f7b60c2c28a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the return type of a member function. <br /></td></tr>
<tr class="separator:a63fd4cf3b926de060c847f7b60c2c28a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad1194298057174d7eaa0c5501b053453" id="r_ad1194298057174d7eaa0c5501b053453"><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="#ad1194298057174d7eaa0c5501b053453">arg</a> (<a class="el" href="#a422ec572c7c56d3cb46d09704be64f65">size_type</a> index) const noexcept</td></tr>
<tr class="memdesc:ad1194298057174d7eaa0c5501b053453"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the type of the i-th argument of a member function. <br /></td></tr>
<tr class="separator:ad1194298057174d7eaa0c5501b053453"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a83fb3576c1a3873de1e1e041f759180b" id="r_a83fb3576c1a3873de1e1e041f759180b"><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="#a83fb3576c1a3873de1e1e041f759180b">invoke</a> (<a class="el" href="structentt_1_1meta__handle.html">meta_handle</a> instance, <a class="el" href="classentt_1_1meta__any.html">meta_any</a> *const args, const <a class="el" href="#a422ec572c7c56d3cb46d09704be64f65">size_type</a> sz) const</td></tr>
<tr class="memdesc:a83fb3576c1a3873de1e1e041f759180b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Invokes the underlying function, if possible. <br /></td></tr>
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<tr class="memitem:aa10b325b5da2a1c04259f2d6dc1f6746" id="r_aa10b325b5da2a1c04259f2d6dc1f6746"><td class="memTemplParams" colspan="2">template&lt;typename... Args&gt; </td></tr>
<tr class="memitem:aa10b325b5da2a1c04259f2d6dc1f6746"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="classentt_1_1meta__any.html">meta_any</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#aa10b325b5da2a1c04259f2d6dc1f6746">invoke</a> (<a class="el" href="structentt_1_1meta__handle.html">meta_handle</a> instance, Args &amp;&amp;...args) const</td></tr>
<tr class="memdesc:aa10b325b5da2a1c04259f2d6dc1f6746"><td class="mdescLeft">&#160;</td><td class="mdescRight">Invokes the underlying function, if possible. <br /></td></tr>
<tr class="separator:aa10b325b5da2a1c04259f2d6dc1f6746"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a78372e6ee35cdefc14c635d414392c75" id="r_a78372e6ee35cdefc14c635d414392c75"><td class="memTemplParams" colspan="2">template&lt;typename Type&gt; </td></tr>
<tr class="memitem:a78372e6ee35cdefc14c635d414392c75"><td class="memTemplItemLeft" align="right" valign="top">Type&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#a78372e6ee35cdefc14c635d414392c75">traits</a> () const noexcept</td></tr>
<tr class="memdesc:a78372e6ee35cdefc14c635d414392c75"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns all meta traits for a given meta object. <br /></td></tr>
<tr class="separator:a78372e6ee35cdefc14c635d414392c75"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa5b5bee63f5eb18605f8335a28ec6d01" id="r_aa5b5bee63f5eb18605f8335a28ec6d01"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structentt_1_1meta__custom.html">meta_custom</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#aa5b5bee63f5eb18605f8335a28ec6d01">custom</a> () const noexcept</td></tr>
<tr class="memdesc:aa5b5bee63f5eb18605f8335a28ec6d01"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns user defined data for a given meta object. <br /></td></tr>
<tr class="separator:aa5b5bee63f5eb18605f8335a28ec6d01"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad0eef8af9ef2a6b39dfbba40ea89c6ea" id="r_ad0eef8af9ef2a6b39dfbba40ea89c6ea"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structentt_1_1meta__func.html">meta_func</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ad0eef8af9ef2a6b39dfbba40ea89c6ea">next</a> () const</td></tr>
<tr class="memdesc:ad0eef8af9ef2a6b39dfbba40ea89c6ea"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the next overload of a given function, if any. <br /></td></tr>
<tr class="separator:ad0eef8af9ef2a6b39dfbba40ea89c6ea"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9727c67eadcaea8a0dc66b7d4b7637e0" id="r_a9727c67eadcaea8a0dc66b7d4b7637e0"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a9727c67eadcaea8a0dc66b7d4b7637e0">operator bool</a> () const noexcept</td></tr>
<tr class="memdesc:a9727c67eadcaea8a0dc66b7d4b7637e0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns true if an object is valid, false otherwise. <br /></td></tr>
<tr class="separator:a9727c67eadcaea8a0dc66b7d4b7637e0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a671bac8b8f15d534c5fa6c80cac22270" id="r_a671bac8b8f15d534c5fa6c80cac22270"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a671bac8b8f15d534c5fa6c80cac22270">operator==</a> (const <a class="el" href="structentt_1_1meta__func.html">meta_func</a> &amp;other) const noexcept</td></tr>
<tr class="memdesc:a671bac8b8f15d534c5fa6c80cac22270"><td class="mdescLeft">&#160;</td><td class="mdescRight">Checks if two objects refer to the same type. <br /></td></tr>
<tr class="separator:a671bac8b8f15d534c5fa6c80cac22270"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Opaque wrapper for member functions. </p>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00963">963</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="a422ec572c7c56d3cb46d09704be64f65" name="a422ec572c7c56d3cb46d09704be64f65"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a422ec572c7c56d3cb46d09704be64f65">&#9670;&#160;</a></span>size_type</h2>
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<td class="memname">using <a class="el" href="#a422ec572c7c56d3cb46d09704be64f65">entt::meta_func::size_type</a> = typename internal::meta_func_node::size_type</td>
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</table>
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<p>Unsigned integer type. </p>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00965">965</a> of file <a class="el" href="meta_8hpp_source.html">meta.hpp</a>.</p>
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<h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a9885a8438083912faa40038c45ee7a53" name="a9885a8438083912faa40038c45ee7a53"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9885a8438083912faa40038c45ee7a53">&#9670;&#160;</a></span>meta_func()</h2>
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<td class="memname">entt::meta_func::meta_func </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classentt_1_1meta__ctx.html">meta_ctx</a> &amp;</td> <td class="paramname"><span class="paramname"><em>area</em></span>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">internal::meta_func_node</td> <td class="paramname"><span class="paramname"><em>curr</em></span>&#160;)</td>
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<span class="mlabels"><span class="mlabel inline">inline</span><span class="mlabel noexcept">noexcept</span></span> </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>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00975">975</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="ad1194298057174d7eaa0c5501b053453" name="ad1194298057174d7eaa0c5501b053453"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad1194298057174d7eaa0c5501b053453">&#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_func::arg </td>
<td>(</td>
<td class="paramtype"><a class="el" href="#a422ec572c7c56d3cb46d09704be64f65">size_type</a></td> <td class="paramname"><span class="paramname"><em>index</em></span></td><td>)</td>
<td> const</td>
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<p>Returns the type of the i-th argument of a member function. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">index</td><td>Index of the argument of which to return the type. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The type of the i-th argument of a member function. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l01611">1611</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="#ae4b3fd3397828894d1a8e9df4d69ad6e">&#9670;&#160;</a></span>arity()</h2>
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<td class="memname"><a class="el" href="#a422ec572c7c56d3cb46d09704be64f65">size_type</a> entt::meta_func::arity </td>
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<p>Returns the number of arguments accepted by a member function. </p>
<dl class="section return"><dt>Returns</dt><dd>The number of arguments accepted by the member function. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00983">983</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="#aa5b5bee63f5eb18605f8335a28ec6d01">&#9670;&#160;</a></span>custom()</h2>
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<td class="memname"><a class="el" href="structentt_1_1meta__custom.html">meta_custom</a> entt::meta_func::custom </td>
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<p>Returns user defined data for a given meta object. </p>
<dl class="section return"><dt>Returns</dt><dd>User defined arbitrary data. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l01047">1047</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="#aa10b325b5da2a1c04259f2d6dc1f6746">&#9670;&#160;</a></span>invoke() <span class="overload">[1/2]</span></h2>
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template&lt;typename... Args&gt; </div>
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<td class="memname"><a class="el" href="classentt_1_1meta__any.html">meta_any</a> entt::meta_func::invoke </td>
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<td class="paramtype"><a class="el" href="structentt_1_1meta__handle.html">meta_handle</a></td> <td class="paramname"><span class="paramname"><em>instance</em></span>, </td>
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<td class="paramtype">Args &amp;&amp;...</td> <td class="paramname"><span class="paramname"><em>args</em></span>&#160;) const</td>
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<p>Invokes the underlying function, if possible. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
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<tr><td class="paramname">Args</td><td>Types of arguments to use to invoke the function. </td></tr>
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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">args</td><td>Parameters to use to invoke the function. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>A wrapper containing the returned value, if any. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l01036">1036</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="#a83fb3576c1a3873de1e1e041f759180b">&#9670;&#160;</a></span>invoke() <span class="overload">[2/2]</span></h2>
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<td class="memname"><a class="el" href="classentt_1_1meta__any.html">meta_any</a> entt::meta_func::invoke </td>
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<td class="paramtype">const <a class="el" href="#a422ec572c7c56d3cb46d09704be64f65">size_type</a></td> <td class="paramname"><span class="paramname"><em>sz</em></span>&#160;) const</td>
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<p>Invokes the underlying function, if possible. </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>
<tr><td class="paramname">args</td><td>Parameters to use to invoke the function. </td></tr>
<tr><td class="paramname">sz</td><td>Number of parameters to use to invoke the function. </td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>A wrapper containing the returned value, if any. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l01023">1023</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="#a8a935c3b78d74afbc953bdcfabe12d4b">&#9670;&#160;</a></span>is_const()</h2>
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<td class="memname">bool entt::meta_func::is_const </td>
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<p>Indicates whether a member function is constant or not. </p>
<dl class="section return"><dt>Returns</dt><dd>True if the member function is constant, false otherwise. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00991">991</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="#a143a54f1f653717762ac43622eab5a99">&#9670;&#160;</a></span>is_static()</h2>
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<td class="memname">bool entt::meta_func::is_static </td>
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<p>Indicates whether a member function is static or not. </p>
<dl class="section return"><dt>Returns</dt><dd>True if the member function is static, false otherwise. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l00999">999</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="#ad0eef8af9ef2a6b39dfbba40ea89c6ea">&#9670;&#160;</a></span>next()</h2>
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<td class="memname"><a class="el" href="structentt_1_1meta__func.html">meta_func</a> entt::meta_func::next </td>
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<p>Returns the next overload of a given function, if any. </p>
<dl class="section return"><dt>Returns</dt><dd>The next overload of the given function, if any. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l01055">1055</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="#a9727c67eadcaea8a0dc66b7d4b7637e0">&#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#l01063">1063</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="#a671bac8b8f15d534c5fa6c80cac22270">&#9670;&#160;</a></span>operator==()</h2>
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<td class="memname">bool entt::meta_func::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#l01068">1068</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="#a63fd4cf3b926de060c847f7b60c2c28a">&#9670;&#160;</a></span>ret()</h2>
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<td class="memname"><a class="el" href="classentt_1_1meta__type.html">meta_type</a> entt::meta_func::ret </td>
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<p>Returns the return type of a member function. </p>
<dl class="section return"><dt>Returns</dt><dd>The return type of the member function. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l01607">1607</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="#a78372e6ee35cdefc14c635d414392c75">&#9670;&#160;</a></span>traits()</h2>
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template&lt;typename Type&gt; </div>
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<td class="memname">Type entt::meta_func::traits </td>
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<p>Returns all meta traits for a given meta object. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
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<tr><td class="paramname">Type</td><td>The type to convert the meta traits to. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The registered meta traits, if any. </dd></dl>
<p class="definition">Definition at line <a class="el" href="meta_8hpp_source.html#l01042">1042</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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