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 <span id="projectnumber">3.2.2</span>
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<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="dir_66e9674e8206a335795995fa32a03c91.html">entt</a></li><li class="navelem"><a class="el" href="dir_a53318306f6ac0f7fe657839abd543ab.html">signal</a></li> </ul>
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<div class="title">delegate.hpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef ENTT_SIGNAL_DELEGATE_HPP</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define ENTT_SIGNAL_DELEGATE_HPP</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>  </div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>  </div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include <tuple></span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include <cstring></span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include <utility></span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include <algorithm></span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <functional></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <type_traits></span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "../config/config.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keyword">namespace </span><a class="code" href="namespaceentt.html">entt</a> {</div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>internal {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  </div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  </div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">template</span><<span class="keyword">typename</span> Ret, <span class="keyword">typename</span>... Args></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">auto</span> to_function_pointer(Ret(*)(Args...)) -> Ret(*)(Args...);</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">template</span><<span class="keyword">typename</span> Ret, <span class="keyword">typename</span>... Args, <span class="keyword">typename</span> Type, <span class="keyword">typename</span> Payload, <span class="keyword">typename</span> = std::enable_if_t<std::is_convertible_v<const Payload *, const Type *>>></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">auto</span> to_function_pointer(Ret(*)(Type &, Args...), <span class="keyword">const</span> Payload *) -> Ret(*)(Args...);</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">template</span><<span class="keyword">typename</span> Ret, <span class="keyword">typename</span>... Args, <span class="keyword">typename</span> Type, <span class="keyword">typename</span> Payload, <span class="keyword">typename</span> = std::enable_if_t<std::is_convertible_v<const Payload *, const Type *>>></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">auto</span> to_function_pointer(Ret(*)(Type *, Args...), <span class="keyword">const</span> Payload *) -> Ret(*)(Args...);</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  </div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">template</span><<span class="keyword">typename</span> Class, <span class="keyword">typename</span> Ret, <span class="keyword">typename</span>... Args></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">auto</span> to_function_pointer(Ret(Class:: *)(Args...), <span class="keyword">const</span> Class *) -> Ret(*)(Args...);</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  </div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">template</span><<span class="keyword">typename</span> Class, <span class="keyword">typename</span> Ret, <span class="keyword">typename</span>... Args></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">auto</span> to_function_pointer(Ret(Class:: *)(Args...) <span class="keyword">const</span>, <span class="keyword">const</span> Class *) -> Ret(*)(Args...);</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  </div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">template</span><<span class="keyword">typename</span> Class, <span class="keyword">typename</span> Type></div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">auto</span> to_function_pointer(Type Class:: *, <span class="keyword">const</span> Class *) -> Type(*)();</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">template</span><<span class="keyword">typename</span>... Type></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">using</span> to_function_pointer_t = decltype(internal::to_function_pointer(std::declval<Type>()...));</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">template</span><<span class="keyword">typename</span> Ret, <span class="keyword">typename</span>... Args></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> constexpr <span class="keyword">auto</span> index_sequence_for(Ret(*)(Args...)) {</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> std::index_sequence_for<Args...>{};</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> }</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  </div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  </div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> }</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  </div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  </div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">template</span><auto></div>
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<div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="structentt_1_1connect__arg__t.html"> 71</a></span> <span class="keyword">struct </span><a class="code" href="structentt_1_1connect__arg__t.html">connect_arg_t</a> {};</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  </div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="keyword">template</span><auto Func></div>
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<div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="namespaceentt.html#af1e73acd6f3d892955819677dc2664b7"> 76</a></span> constexpr <a class="code" href="structentt_1_1connect__arg__t.html">connect_arg_t<Func></a> <a class="code" href="namespaceentt.html#af1e73acd6f3d892955819677dc2664b7">connect_arg</a>{};</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">template</span><<span class="keyword">typename</span>></div>
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<div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="classentt_1_1delegate.html"> 86</a></span> <span class="keyword">class </span><a class="code" href="classentt_1_1delegate.html">delegate</a>;</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  </div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  </div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">template</span><<span class="keyword">typename</span> Ret, <span class="keyword">typename</span>... Args></div>
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<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html"> 103</a></span> <span class="keyword">class </span><a class="code" href="classentt_1_1delegate.html">delegate</a><Ret(Args...)> {</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">using</span> proto_fn_type = Ret(<span class="keyword">const</span> <span class="keywordtype">void</span> *, std::tuple<Args &&...>);</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  </div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">template</span><<span class="keyword">auto</span> Function, std::size_t... Index></div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordtype">void</span> connect(std::index_sequence<Index...>) ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  static_assert(std::is_invocable_r_v<Ret, decltype(Function), std::tuple_element_t<Index, std::tuple<Args...>>...>);</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  data = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  fn = [](<span class="keyword">const</span> <span class="keywordtype">void</span> *, std::tuple<Args &&...> args) -> Ret {</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// Ret(...) makes void(...) eat the return values to avoid errors</span></div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">return</span> Ret(std::invoke(Function, std::forward<std::tuple_element_t<Index, std::tuple<Args...>>>(std::get<Index>(args))...));</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  };</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  </div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">template</span><<span class="keyword">auto</span> Candidate, <span class="keyword">typename</span> Type, std::size_t... Index></div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordtype">void</span> connect(Type &value_or_instance, std::index_sequence<Index...>) ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  static_assert(std::is_invocable_r_v<Ret, decltype(Candidate), Type &, std::tuple_element_t<Index, std::tuple<Args...>>...>);</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  data = &value_or_instance;</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  fn = [](<span class="keyword">const</span> <span class="keywordtype">void</span> *payload, std::tuple<Args &&...> args) -> Ret {</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  Type *curr = static_cast<Type *>(<span class="keyword">const_cast<</span>std::conditional_t<std::is_const_v<Type>, <span class="keyword">const </span><span class="keywordtype">void</span> *, <span class="keywordtype">void</span> *<span class="keyword">></span>>(payload));</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="comment">// Ret(...) makes void(...) eat the return values to avoid errors</span></div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">return</span> Ret(std::invoke(Candidate, *curr, std::forward<std::tuple_element_t<Index, std::tuple<Args...>>>(std::get<Index>(args))...));</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  };</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  }</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keyword">template</span><<span class="keyword">auto</span> Candidate, <span class="keyword">typename</span> Type, std::size_t... Index></div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordtype">void</span> connect(Type *value_or_instance, std::index_sequence<Index...>) ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  static_assert(std::is_invocable_r_v<Ret, decltype(Candidate), Type *, std::tuple_element_t<Index, std::tuple<Args...>>...>);</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  data = value_or_instance;</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  </div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  fn = [](<span class="keyword">const</span> <span class="keywordtype">void</span> *payload, std::tuple<Args &&...> args) -> Ret {</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  Type *curr = static_cast<Type *>(<span class="keyword">const_cast<</span>std::conditional_t<std::is_const_v<Type>, <span class="keyword">const </span><span class="keywordtype">void</span> *, <span class="keywordtype">void</span> *<span class="keyword">></span>>(payload));</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="comment">// Ret(...) makes void(...) eat the return values to avoid errors</span></div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">return</span> Ret(std::invoke(Candidate, curr, std::forward<std::tuple_element_t<Index, std::tuple<Args...>>>(std::get<Index>(args))...));</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  };</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a235927a00f56e4b56dbfdc4e6cf5ddb4"> 143</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a235927a00f56e4b56dbfdc4e6cf5ddb4">function_type</a> = Ret(Args...);</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  </div>
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<div class="line"><a name="l00146"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a5c4828a5df5ed1e8fd18465ff63eb73c"> 146</a></span>  <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a5c4828a5df5ed1e8fd18465ff63eb73c">delegate</a>() ENTT_NOEXCEPT</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  : fn{<span class="keyword">nullptr</span>}, data{<span class="keyword">nullptr</span>}</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  {}</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  </div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keyword">template</span><auto Function></div>
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<div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#ad07c76f552619d55edc17a3722958215"> 155</a></span>  <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#ad07c76f552619d55edc17a3722958215">delegate</a>(<a class="code" href="structentt_1_1connect__arg__t.html">connect_arg_t<Function></a>) ENTT_NOEXCEPT</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  : <a class="code" href="classentt_1_1delegate.html">delegate</a>{}</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  connect<Function>();</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  }</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  </div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">template</span><auto Cand<span class="keywordtype">id</span>ate, <span class="keyword">typename</span> Type></div>
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<div class="line"><a name="l00169"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a24fbe634fda0fe5c67ec6deba0deaa66"> 169</a></span>  <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a24fbe634fda0fe5c67ec6deba0deaa66">delegate</a>(<a class="code" href="structentt_1_1connect__arg__t.html">connect_arg_t<Candidate></a>, Type &value_or_instance) ENTT_NOEXCEPT</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  : <a class="code" href="classentt_1_1delegate.html">delegate</a>{}</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  {</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  connect<Candidate>(value_or_instance);</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  </div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">template</span><auto Cand<span class="keywordtype">id</span>ate, <span class="keyword">typename</span> Type></div>
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<div class="line"><a name="l00183"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a3c3391085b16cba9024b4bbb372f7326"> 183</a></span>  <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a3c3391085b16cba9024b4bbb372f7326">delegate</a>(<a class="code" href="structentt_1_1connect__arg__t.html">connect_arg_t<Candidate></a>, Type *value_or_instance) ENTT_NOEXCEPT</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  : <a class="code" href="classentt_1_1delegate.html">delegate</a>{}</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  {</div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  connect<Candidate>(value_or_instance);</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  }</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  </div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keyword">template</span><auto Function></div>
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<div class="line"><a name="l00194"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a6e732abcbc4aa9b8899c92d8f21e55a6"> 194</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a6e732abcbc4aa9b8899c92d8f21e55a6">connect</a>() ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  connect<Function>(internal::index_sequence_for(internal::to_function_pointer_t<decltype(Function)>{}));</div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  }</div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  </div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keyword">template</span><auto Cand<span class="keywordtype">id</span>ate, <span class="keyword">typename</span> Type></div>
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<div class="line"><a name="l00214"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#aae828d209ffe33590c2bb8e4b37f47ef"> 214</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#aae828d209ffe33590c2bb8e4b37f47ef">connect</a>(Type &value_or_instance) ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  connect<Candidate>(value_or_instance, internal::index_sequence_for(internal::to_function_pointer_t<decltype(Candidate), Type *>{}));</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  }</div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  </div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keyword">template</span><auto Cand<span class="keywordtype">id</span>ate, <span class="keyword">typename</span> Type></div>
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<div class="line"><a name="l00234"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#afcdce5ab5ae55520cce86f3f79b38e9c"> 234</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#afcdce5ab5ae55520cce86f3f79b38e9c">connect</a>(Type *value_or_instance) ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  connect<Candidate>(value_or_instance, internal::index_sequence_for(internal::to_function_pointer_t<decltype(Candidate), Type *>{}));</div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  }</div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  </div>
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<div class="line"><a name="l00243"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a0d81bb1bde6abd78914cd0a07084bcd7"> 243</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a0d81bb1bde6abd78914cd0a07084bcd7">reset</a>() ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  fn = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  data = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  }</div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  </div>
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<div class="line"><a name="l00252"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a3e0495b7612d458cbc59dc4b657d586f"> 252</a></span>  <span class="keyword">const</span> <span class="keywordtype">void</span> * <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a3e0495b7612d458cbc59dc4b657d586f">instance</a>() const ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">return</span> data;</div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  }</div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  </div>
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<div class="line"><a name="l00270"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a0e53caedb53810bc96aa71bce199c990"> 270</a></span>  Ret <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a0e53caedb53810bc96aa71bce199c990">operator()</a>(Args... args)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  ENTT_ASSERT(fn);</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">return</span> fn(data, std::forward_as_tuple(std::forward<Args>(args)...));</div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  }</div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  </div>
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<div class="line"><a name="l00279"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a73e1029cbb6359d803a6cc06b82f80d7"> 279</a></span>  <span class="keyword">explicit</span> <span class="keyword">operator</span> bool() const ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="comment">// no need to test also data</span></div>
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keywordflow">return</span> fn;</div>
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<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  }</div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  </div>
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<div class="line"><a name="l00289"></a><span class="lineno"><a class="line" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a54ca30c9a3f7a9662363c48db4e86aae"> 289</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a54ca30c9a3f7a9662363c48db4e86aae">operator==</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1delegate.html">delegate</a><Ret(Args...)> &other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordflow">return</span> fn == other.fn && data == other.data;</div>
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<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  }</div>
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<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  </div>
|
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<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  proto_fn_type *fn;</div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="keyword">const</span> <span class="keywordtype">void</span> *data;</div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> };</div>
|
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<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  </div>
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<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  </div>
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<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="keyword">template</span><<span class="keyword">typename</span> Ret, <span class="keyword">typename</span>... Args></div>
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<div class="line"><a name="l00308"></a><span class="lineno"><a class="line" href="namespaceentt.html#a656b2ec80abf493ce1924b314d13fd18"> 308</a></span> <span class="keywordtype">bool</span> <a class="code" href="namespaceentt.html#a1a211752d12273a08015c524133e27c3">operator!=</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1delegate.html">delegate</a><Ret(Args...)> &lhs, <span class="keyword">const</span> <a class="code" href="classentt_1_1delegate.html">delegate</a><Ret(Args...)> &rhs) ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordflow">return</span> !(lhs == rhs);</div>
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<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> }</div>
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<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  </div>
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<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  </div>
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<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="keyword">template</span><auto Function></div>
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<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <a class="code" href="namespaceentt.html#a464a269b63d8c76395b0c54f33d3d6fb">delegate</a>(connect_arg_t<Function>) ENTT_NOEXCEPT</div>
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<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> -> <a class="code" href="namespaceentt.html#a464a269b63d8c76395b0c54f33d3d6fb">delegate</a><std::remove_pointer_t<internal::to_function_pointer_t<decltype(Function)>>>;</div>
|
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<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  </div>
|
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<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  </div>
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<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="keyword">template</span><auto Cand<span class="keywordtype">id</span>ate, <span class="keyword">typename</span> Type></div>
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<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <a class="code" href="namespaceentt.html#a464a269b63d8c76395b0c54f33d3d6fb">delegate</a>(connect_arg_t<Candidate>, Type &) ENTT_NOEXCEPT</div>
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<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> -> <a class="code" href="namespaceentt.html#a464a269b63d8c76395b0c54f33d3d6fb">delegate</a><std::remove_pointer_t<internal::to_function_pointer_t<decltype(Candidate), Type *>>>;</div>
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<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  </div>
|
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<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  </div>
|
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<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> <span class="keyword">template</span><auto Cand<span class="keywordtype">id</span>ate, <span class="keyword">typename</span> Type></div>
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<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> <a class="code" href="namespaceentt.html#a464a269b63d8c76395b0c54f33d3d6fb">delegate</a>(connect_arg_t<Candidate>, Type *) ENTT_NOEXCEPT</div>
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<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> -> <a class="code" href="namespaceentt.html#a464a269b63d8c76395b0c54f33d3d6fb">delegate</a><std::remove_pointer_t<internal::to_function_pointer_t<decltype(Candidate), Type *>>>;</div>
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<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  </div>
|
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<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  </div>
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<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> }</div>
|
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<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  </div>
|
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<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  </div>
|
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<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="preprocessor">#endif // ENTT_SIGNAL_DELEGATE_HPP</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_ad07c76f552619d55edc17a3722958215"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#ad07c76f552619d55edc17a3722958215">entt::delegate< Ret(Args...)>::delegate</a></div><div class="ttdeci">delegate(connect_arg_t< Function >) ENTT_NOEXCEPT</div><div class="ttdoc">Constructs a delegate and connects a free function to it.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00155">delegate.hpp:155</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_a0d81bb1bde6abd78914cd0a07084bcd7"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a0d81bb1bde6abd78914cd0a07084bcd7">entt::delegate< Ret(Args...)>::reset</a></div><div class="ttdeci">void reset() ENTT_NOEXCEPT</div><div class="ttdoc">Resets a delegate.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00243">delegate.hpp:243</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_aae828d209ffe33590c2bb8e4b37f47ef"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#aae828d209ffe33590c2bb8e4b37f47ef">entt::delegate< Ret(Args...)>::connect</a></div><div class="ttdeci">void connect(Type &value_or_instance) ENTT_NOEXCEPT</div><div class="ttdoc">Connects a member function for a given instance or a free function with payload to a delegate.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00214">delegate.hpp:214</a></div></div>
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<div class="ttc" id="anamespaceentt_html_a464a269b63d8c76395b0c54f33d3d6fb"><div class="ttname"><a href="namespaceentt.html#a464a269b63d8c76395b0c54f33d3d6fb">entt::delegate</a></div><div class="ttdeci">delegate(connect_arg_t< Function >) ENTT_NOEXCEPT -> delegate< std::remove_pointer_t< internal::to_function_pointer_t< decltype(Function)>>></div><div class="ttdoc">Deduction guide.</div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_a0e53caedb53810bc96aa71bce199c990"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a0e53caedb53810bc96aa71bce199c990">entt::delegate< Ret(Args...)>::operator()</a></div><div class="ttdeci">Ret operator()(Args... args) const</div><div class="ttdoc">Triggers a delegate.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00270">delegate.hpp:270</a></div></div>
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<div class="ttc" id="anamespaceentt_html_af1e73acd6f3d892955819677dc2664b7"><div class="ttname"><a href="namespaceentt.html#af1e73acd6f3d892955819677dc2664b7">entt::connect_arg</a></div><div class="ttdeci">constexpr connect_arg_t< Func > connect_arg</div><div class="ttdoc">Constant of type connect_arg_t used to disambiguate calls.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00076">delegate.hpp:76</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_a24fbe634fda0fe5c67ec6deba0deaa66"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a24fbe634fda0fe5c67ec6deba0deaa66">entt::delegate< Ret(Args...)>::delegate</a></div><div class="ttdeci">delegate(connect_arg_t< Candidate >, Type &value_or_instance) ENTT_NOEXCEPT</div><div class="ttdoc">Constructs a delegate and connects a member for a given instance or a free function with payload.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00169">delegate.hpp:169</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_a5c4828a5df5ed1e8fd18465ff63eb73c"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a5c4828a5df5ed1e8fd18465ff63eb73c">entt::delegate< Ret(Args...)>::delegate</a></div><div class="ttdeci">delegate() ENTT_NOEXCEPT</div><div class="ttdoc">Default constructor.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00146">delegate.hpp:146</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_a6e732abcbc4aa9b8899c92d8f21e55a6"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a6e732abcbc4aa9b8899c92d8f21e55a6">entt::delegate< Ret(Args...)>::connect</a></div><div class="ttdeci">void connect() ENTT_NOEXCEPT</div><div class="ttdoc">Connects a free function to a delegate.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00194">delegate.hpp:194</a></div></div>
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<div class="ttc" id="anamespaceentt_html"><div class="ttname"><a href="namespaceentt.html">entt</a></div><div class="ttdoc">EnTT default namespace.</div><div class="ttdef"><b>Definition:</b> <a href="algorithm_8hpp_source.html#l00012">algorithm.hpp:12</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_a235927a00f56e4b56dbfdc4e6cf5ddb4"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a235927a00f56e4b56dbfdc4e6cf5ddb4">entt::delegate< Ret(Args...)>::function_type</a></div><div class="ttdeci">Ret(Args...) function_type</div><div class="ttdoc">Function type of the delegate.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00143">delegate.hpp:143</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_a3e0495b7612d458cbc59dc4b657d586f"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a3e0495b7612d458cbc59dc4b657d586f">entt::delegate< Ret(Args...)>::instance</a></div><div class="ttdeci">const void * instance() const ENTT_NOEXCEPT</div><div class="ttdoc">Returns the instance or the payload linked to a delegate, if any.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00252">delegate.hpp:252</a></div></div>
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<div class="ttc" id="anamespaceentt_html_a1a211752d12273a08015c524133e27c3"><div class="ttname"><a href="namespaceentt.html#a1a211752d12273a08015c524133e27c3">entt::operator!=</a></div><div class="ttdeci">constexpr bool operator!=(const basic_hashed_string< Char > &lhs, const basic_hashed_string< Char > &rhs) ENTT_NOEXCEPT</div><div class="ttdoc">Compares two hashed strings.</div><div class="ttdef"><b>Definition:</b> <a href="hashed__string_8hpp_source.html#l00217">hashed_string.hpp:217</a></div></div>
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<div class="ttc" id="astructentt_1_1connect__arg__t_html"><div class="ttname"><a href="structentt_1_1connect__arg__t.html">entt::connect_arg_t</a></div><div class="ttdoc">Used to wrap a function or a member of a specified type.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00071">delegate.hpp:71</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_a3c3391085b16cba9024b4bbb372f7326"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a3c3391085b16cba9024b4bbb372f7326">entt::delegate< Ret(Args...)>::delegate</a></div><div class="ttdeci">delegate(connect_arg_t< Candidate >, Type *value_or_instance) ENTT_NOEXCEPT</div><div class="ttdoc">Constructs a delegate and connects a member for a given instance or a free function with payload.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00183">delegate.hpp:183</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_html"><div class="ttname"><a href="classentt_1_1delegate.html">entt::delegate</a></div><div class="ttdoc">Basic delegate implementation.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00086">delegate.hpp:86</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_a54ca30c9a3f7a9662363c48db4e86aae"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#a54ca30c9a3f7a9662363c48db4e86aae">entt::delegate< Ret(Args...)>::operator==</a></div><div class="ttdeci">bool operator==(const delegate< Ret(Args...)> &other) const ENTT_NOEXCEPT</div><div class="ttdoc">Compares the contents of two delegates.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00289">delegate.hpp:289</a></div></div>
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<div class="ttc" id="aclassentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4_html_afcdce5ab5ae55520cce86f3f79b38e9c"><div class="ttname"><a href="classentt_1_1delegate_3_01Ret_07Args_8_8_8_08_4.html#afcdce5ab5ae55520cce86f3f79b38e9c">entt::delegate< Ret(Args...)>::connect</a></div><div class="ttdeci">void connect(Type *value_or_instance) ENTT_NOEXCEPT</div><div class="ttdoc">Connects a member function for a given instance or a free function with payload to a delegate.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00234">delegate.hpp:234</a></div></div>
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