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 <span id="projectnumber">3.6.0</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_e3a7bb56c55e5c2286e2fe96e197d4f5.html">entity</a></li> </ul>
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<div class="title">observer.hpp</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef ENTT_ENTITY_OBSERVER_HPP</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define ENTT_ENTITY_OBSERVER_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 <limits></span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include <cstddef></span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include <cstdint></span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include <utility></span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <type_traits></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "../config/config.h"</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "../core/type_traits.hpp"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "../signal/delegate.hpp"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "registry.hpp"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "storage.hpp"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "utility.hpp"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "entity.hpp"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "fwd.hpp"</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">namespace </span><a class="code" href="namespaceentt.html">entt</a> {</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">template</span><<span class="keyword">typename</span>...></div>
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<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="structentt_1_1matcher.html"> 25</a></span> <span class="keyword">struct </span><a class="code" href="structentt_1_1matcher.html">matcher</a> {};</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</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>...></div>
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<div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector.html"> 35</a></span> <span class="keyword">struct </span><a class="code" href="structentt_1_1basic__collector.html">basic_collector</a>;</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="l00046"></a><span class="lineno"> 46</span> <span class="keyword">template</span><></div>
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<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_4.html"> 47</a></span> <span class="keyword">struct </span><a class="code" href="structentt_1_1basic__collector_3_4.html">basic_collector<></a> {</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>... AllOf, <span class="keyword">typename</span>... NoneOf></div>
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<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_4.html#a1e948449e1102be0df84120d1422267b"> 55</a></span>  <span class="keyword">static</span> constexpr <span class="keyword">auto</span> <a class="code" href="structentt_1_1basic__collector_3_4.html#a1e948449e1102be0df84120d1422267b">group</a>(<a class="code" href="structentt_1_1exclude__t.html">exclude_t<NoneOf...></a> = {}) ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> <a class="code" href="structentt_1_1basic__collector.html">basic_collector<matcher<type_list<></a>, <a class="code" href="structentt_1_1type__list.html">type_list<></a>, <a class="code" href="structentt_1_1type__list.html">type_list</a><NoneOf...>, AllOf...>>{};</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="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">template</span><<span class="keyword">typename</span> AnyOf></div>
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<div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_4.html#a13ce2f2ee1d5e8c852fa055cb693a210"> 65</a></span>  <span class="keyword">static</span> constexpr <span class="keyword">auto</span> <a class="code" href="structentt_1_1basic__collector_3_4.html#a13ce2f2ee1d5e8c852fa055cb693a210">update</a>() ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">return</span> <a class="code" href="structentt_1_1basic__collector.html">basic_collector<matcher<type_list<></a>, <a class="code" href="structentt_1_1type__list.html">type_list<></a>, AnyOf>>{};</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> };</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  </div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="keyword">template</span><<span class="keyword">typename</span>... Reject, <span class="keyword">typename</span>... Require, <span class="keyword">typename</span>... Rule, <span class="keyword">typename</span>... Other></div>
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<div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html"> 79</a></span> <span class="keyword">struct </span><a class="code" href="structentt_1_1basic__collector.html">basic_collector</a><<a class="code" href="structentt_1_1matcher.html">matcher</a><<a class="code" href="structentt_1_1type__list.html">type_list</a><Reject...>, <a class="code" href="structentt_1_1type__list.html">type_list</a><Require...>, Rule...>, Other...> {</div>
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<div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#ac7c32cf26795aa4fc08d21597c68bc3d"> 81</a></span>  <span class="keyword">using</span> <a class="code" href="structentt_1_1matcher.html">current_type</a> = <a class="code" href="structentt_1_1matcher.html">matcher</a><<a class="code" href="structentt_1_1type__list.html">type_list</a><Reject...>, <a class="code" href="structentt_1_1type__list.html">type_list</a><Require...>, Rule...>;</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  </div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... AllOf, <span class="keyword">typename</span>... NoneOf></div>
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<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#aa0d0dc1a30f20f45bf5e7ce15d7d0a62"> 90</a></span>  <span class="keyword">static</span> constexpr <span class="keyword">auto</span> <a class="code" href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#aa0d0dc1a30f20f45bf5e7ce15d7d0a62">group</a>(<a class="code" href="structentt_1_1exclude__t.html">exclude_t<NoneOf...></a> = {}) ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">return</span> <a class="code" href="structentt_1_1basic__collector.html">basic_collector<matcher<type_list<></a>, <a class="code" href="structentt_1_1type__list.html">type_list<></a>, <a class="code" href="structentt_1_1type__list.html">type_list</a><NoneOf...>, AllOf...>, current_type, Other...>{};</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  }</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">template</span><<span class="keyword">typename</span> AnyOf></div>
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<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#a57c1366ef7a47ff4e859deddaa8e8f64"> 100</a></span>  <span class="keyword">static</span> constexpr <span class="keyword">auto</span> <a class="code" href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#a57c1366ef7a47ff4e859deddaa8e8f64">update</a>() ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">return</span> <a class="code" href="structentt_1_1basic__collector.html">basic_collector<matcher<type_list<></a>, <a class="code" href="structentt_1_1type__list.html">type_list<></a>, AnyOf>, <a class="code" href="structentt_1_1matcher.html">current_type</a>, Other...>{};</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... AllOf, <span class="keyword">typename</span>... NoneOf></div>
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<div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#ac9497e14628be6c9fa2758bc5fffb373"> 111</a></span>  <span class="keyword">static</span> constexpr <span class="keyword">auto</span> <a class="code" href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#ac9497e14628be6c9fa2758bc5fffb373">where</a>(<a class="code" href="structentt_1_1exclude__t.html">exclude_t<NoneOf...></a> = {}) ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">using</span> extended_type = <a class="code" href="structentt_1_1matcher.html">matcher</a><<a class="code" href="structentt_1_1type__list.html">type_list</a><Reject..., NoneOf...>, <a class="code" href="structentt_1_1type__list.html">type_list</a><Require..., AllOf...>, Rule...>;</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">return</span> <a class="code" href="structentt_1_1basic__collector.html">basic_collector</a><extended_type, Other...>{};</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>  </div>
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<div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="namespaceentt.html#aea8b073b774362fe800d9cce3542927a"> 119</a></span> <span class="keyword">inline</span> constexpr <a class="code" href="structentt_1_1basic__collector_3_4.html">basic_collector<></a> <a class="code" href="namespaceentt.html#aea8b073b774362fe800d9cce3542927a">collector</a>{};</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  </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="l00171"></a><span class="lineno"> 171</span> <span class="keyword">template</span><<span class="keyword">typename</span> Entity></div>
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<div class="line"><a name="l00172"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html"> 172</a></span> <span class="keyword">class </span><a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> {</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keyword">using</span> payload_type = std::uint32_t;</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="l00175"></a><span class="lineno"> 175</span>  <span class="keyword">template</span><<span class="keyword">typename</span>></div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keyword">struct </span>matcher_handler;</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  </div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... Reject, <span class="keyword">typename</span>... Require, <span class="keyword">typename</span> AnyOf></div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keyword">struct </span>matcher_handler<<a class="code" href="structentt_1_1matcher.html">matcher</a><<a class="code" href="structentt_1_1type__list.html">type_list</a><Reject...>, <a class="code" href="structentt_1_1type__list.html">type_list</a><Require...>, AnyOf>> {</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">template</span><std::<span class="keywordtype">size_t</span> Index></div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> maybe_valid_if(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, <a class="code" href="classentt_1_1basic__registry.html">basic_registry<Entity></a> &reg, <span class="keyword">const</span> Entity <a class="code" href="namespaceentt.html">entt</a>) {</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">if</span>(reg.template has<Require...>(<a class="code" href="namespaceentt.html">entt</a>) && !reg.template <a class="code" href="classentt_1_1any.html">any<Reject...></a>(<a class="code" href="namespaceentt.html">entt</a>)) {</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">if</span>(!obs.view.contains(<a class="code" href="namespaceentt.html">entt</a>)) {</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  obs.view.<a class="code" href="classentt_1_1basic__storage.html#af7eca6c57538e87443ce9be3f294c563">emplace</a>(<a class="code" href="namespaceentt.html">entt</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>  </div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  obs.view.<a class="code" href="classentt_1_1basic__storage.html#a2ed5094d61941d46c34e6e18fd73f578">get</a>(<a class="code" href="namespaceentt.html">entt</a>) |= (1 << Index);</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="l00189"></a><span class="lineno"> 189</span>  }</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  </div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">template</span><std::<span class="keywordtype">size_t</span> Index></div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> discard_if(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, <a class="code" href="classentt_1_1basic__registry.html">basic_registry<Entity></a> &, <span class="keyword">const</span> Entity <a class="code" href="namespaceentt.html">entt</a>) {</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">if</span>(obs.view.contains(<a class="code" href="namespaceentt.html">entt</a>) && !(obs.view.<a class="code" href="classentt_1_1basic__storage.html#a2ed5094d61941d46c34e6e18fd73f578">get</a>(<a class="code" href="namespaceentt.html">entt</a>) &= (~(1 << Index)))) {</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  obs.view.remove(<a class="code" href="namespaceentt.html">entt</a>);</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  }</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="l00198"></a><span class="lineno"> 198</span>  <span class="keyword">template</span><std::<span class="keywordtype">size_t</span> Index></div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> connect(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, <a class="code" href="classentt_1_1basic__registry.html">basic_registry<Entity></a> &reg) {</div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  (reg.template on_destroy<Require>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  (reg.template on_construct<Reject>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  reg.template on_update<AnyOf>().template connect<&maybe_valid_if<Index>>(obs);</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  reg.template on_destroy<AnyOf>().template connect<&discard_if<Index>>(obs);</div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  }</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  </div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1basic__observer.html#a1337e8f885ca963383e5a3ed2a354955">disconnect</a>(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, <a class="code" href="classentt_1_1basic__registry.html">basic_registry<Entity></a> &reg) {</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  (reg.template on_destroy<Require>().disconnect(obs), ...);</div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  (reg.template on_construct<Reject>().disconnect(obs), ...);</div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  reg.template on_update<AnyOf>().disconnect(obs);</div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  reg.template on_destroy<AnyOf>().disconnect(obs);</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  }</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  };</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  </div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... Reject, <span class="keyword">typename</span>... Require, <span class="keyword">typename</span>... NoneOf, <span class="keyword">typename</span>... AllOf></div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keyword">struct </span>matcher_handler<<a class="code" href="structentt_1_1matcher.html">matcher</a><<a class="code" href="structentt_1_1type__list.html">type_list</a><Reject...>, <a class="code" href="structentt_1_1type__list.html">type_list</a><Require...>, <a class="code" href="structentt_1_1type__list.html">type_list</a><NoneOf...>, AllOf...>> {</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keyword">template</span><std::size_t Index, <span class="keyword">typename</span>... Ignore></div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> maybe_valid_if(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, <a class="code" href="classentt_1_1basic__registry.html">basic_registry<Entity></a> &reg, <span class="keyword">const</span> Entity <a class="code" href="namespaceentt.html">entt</a>) {</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span>([&reg, <a class="code" href="namespaceentt.html">entt</a>]() {</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">if</span> constexpr(<span class="keyword">sizeof</span>...(Ignore) == 0) {</div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">return</span> reg.template has<AllOf..., Require...>(<a class="code" href="namespaceentt.html">entt</a>) && !reg.template <a class="code" href="classentt_1_1any.html">any<NoneOf..., Reject...></a>(<a class="code" href="namespaceentt.html">entt</a>);</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">return</span> reg.template has<AllOf..., Require...>(<a class="code" href="namespaceentt.html">entt</a>) && ((std::is_same_v<Ignore..., NoneOf> || !reg.template <a class="code" href="classentt_1_1any.html">any<NoneOf></a>(<a class="code" href="namespaceentt.html">entt</a>)) && ...) && !reg.template <a class="code" href="classentt_1_1any.html">any</a><Reject...>(<a class="code" href="namespaceentt.html">entt</a>);</div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  }</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }())</div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  {</div>
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<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">if</span>(!obs.view.contains(<a class="code" href="namespaceentt.html">entt</a>)) {</div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  obs.view.<a class="code" href="classentt_1_1basic__storage.html#af7eca6c57538e87443ce9be3f294c563">emplace</a>(<a class="code" href="namespaceentt.html">entt</a>);</div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  }</div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  </div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  obs.view.<a class="code" href="classentt_1_1basic__storage.html#a2ed5094d61941d46c34e6e18fd73f578">get</a>(<a class="code" href="namespaceentt.html">entt</a>) |= (1 << Index);</div>
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|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  }</div>
|
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  }</div>
|
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  </div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keyword">template</span><std::<span class="keywordtype">size_t</span> Index></div>
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|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> discard_if(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, <a class="code" href="classentt_1_1basic__registry.html">basic_registry<Entity></a> &, <span class="keyword">const</span> Entity <a class="code" href="namespaceentt.html">entt</a>) {</div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">if</span>(obs.view.contains(<a class="code" href="namespaceentt.html">entt</a>) && !(obs.view.<a class="code" href="classentt_1_1basic__storage.html#a2ed5094d61941d46c34e6e18fd73f578">get</a>(<a class="code" href="namespaceentt.html">entt</a>) &= (~(1 << Index)))) {</div>
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|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  obs.view.remove(<a class="code" href="namespaceentt.html">entt</a>);</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  }</div>
|
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  }</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  </div>
|
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keyword">template</span><std::<span class="keywordtype">size_t</span> Index></div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> connect(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, <a class="code" href="classentt_1_1basic__registry.html">basic_registry<Entity></a> &reg) {</div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  (reg.template on_destroy<Require>().template connect<&discard_if<Index>>(obs), ...);</div>
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|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  (reg.template on_construct<Reject>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  (reg.template on_construct<AllOf>().template connect<&maybe_valid_if<Index>>(obs), ...);</div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  (reg.template on_destroy<NoneOf>().template connect<&maybe_valid_if<Index, NoneOf>>(obs), ...);</div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  (reg.template on_destroy<AllOf>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  (reg.template on_construct<NoneOf>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  }</div>
|
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  </div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1basic__observer.html#a1337e8f885ca963383e5a3ed2a354955">disconnect</a>(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, <a class="code" href="classentt_1_1basic__registry.html">basic_registry<Entity></a> &reg) {</div>
|
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  (reg.template on_destroy<Require>().disconnect(obs), ...);</div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  (reg.template on_construct<Reject>().disconnect(obs), ...);</div>
|
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  (reg.template on_construct<AllOf>().disconnect(obs), ...);</div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  (reg.template on_destroy<NoneOf>().disconnect(obs), ...);</div>
|
|
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  (reg.template on_destroy<AllOf>().disconnect(obs), ...);</div>
|
|
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  (reg.template on_construct<NoneOf>().disconnect(obs), ...);</div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  }</div>
|
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  };</div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  </div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... Matcher></div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1basic__observer.html#a1337e8f885ca963383e5a3ed2a354955">disconnect</a>(<a class="code" href="classentt_1_1basic__registry.html">basic_registry<Entity></a> &reg, <a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &obs) {</div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  (matcher_handler<Matcher>::disconnect(obs, reg), ...);</div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  }</div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  </div>
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<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... Matcher, std::size_t... Index></div>
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<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keywordtype">void</span> connect(<a class="code" href="classentt_1_1basic__registry.html">basic_registry<Entity></a> &reg, std::index_sequence<Index...>) {</div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  static_assert(<span class="keyword">sizeof</span>...(Matcher) < std::numeric_limits<payload_type>::digits, <span class="stringliteral">"Too many matchers"</span>);</div>
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<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  (matcher_handler<Matcher>::template connect<Index>(*<span class="keyword">this</span>, reg), ...);</div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  release.template connect<&<a class="code" href="classentt_1_1basic__observer.html#a1337e8f885ca963383e5a3ed2a354955">basic_observer::disconnect</a><Matcher...>>(reg);</div>
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  }</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  </div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00275"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#af7a57f53ed7a6c835129480ff6594f7d"> 275</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1basic__observer.html#af7a57f53ed7a6c835129480ff6594f7d">entity_type</a> = Entity;</div>
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<div class="line"><a name="l00277"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a147a0e35035fc3c19b67b31d66d2d80b"> 277</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1basic__observer.html#a147a0e35035fc3c19b67b31d66d2d80b">size_type</a> = std::size_t;</div>
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<div class="line"><a name="l00279"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a3b57e5efae80301542b1b4011debb680"> 279</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1basic__observer.html#a3b57e5efae80301542b1b4011debb680">iterator</a> = <span class="keyword">typename</span> <a class="code" href="classentt_1_1basic__sparse__set.html#ac1ec801822e07322ff37412472bc040a">basic_sparse_set<Entity>::iterator</a>;</div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  </div>
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<div class="line"><a name="l00282"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#adfb08de0ef1c0f57fadc6f6d171b931a"> 282</a></span>  <a class="code" href="classentt_1_1basic__observer.html#adfb08de0ef1c0f57fadc6f6d171b931a">basic_observer</a>()</div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  : release{},</div>
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <a class="code" href="classentt_1_1basic__view.html">view</a>{}</div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  {}</div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  </div>
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<div class="line"><a name="l00288"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#aa685204c94266b5631c13540012e73c2"> 288</a></span>  <a class="code" href="classentt_1_1basic__observer.html#aa685204c94266b5631c13540012e73c2">basic_observer</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &) = <span class="keyword">delete</span>;</div>
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<div class="line"><a name="l00290"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#accbe2546b1b74de1a59e673cb6250413"> 290</a></span>  <a class="code" href="classentt_1_1basic__observer.html#accbe2546b1b74de1a59e673cb6250413">basic_observer</a>(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &&) = <span class="keyword">delete</span>;</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="l00297"></a><span class="lineno"> 297</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... Matcher></div>
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<div class="line"><a name="l00298"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#abef3c847acf610f1a6f856b05f0f0721"> 298</a></span>  <a class="code" href="classentt_1_1basic__observer.html#abef3c847acf610f1a6f856b05f0f0721">basic_observer</a>(<a class="code" href="classentt_1_1basic__registry.html">basic_registry<entity_type></a> &reg, <a class="code" href="structentt_1_1basic__collector.html">basic_collector<Matcher...></a>)</div>
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<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  : <a class="code" href="classentt_1_1basic__observer.html">basic_observer</a>{}</div>
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<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  {</div>
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<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  connect<Matcher...>(reg, std::index_sequence_for<Matcher...>{});</div>
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<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  }</div>
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<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  </div>
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<div class="line"><a name="l00305"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#afb6fbd2a5ce7bc57013b0bd9ad482599"> 305</a></span>  <a class="code" href="classentt_1_1basic__observer.html#afb6fbd2a5ce7bc57013b0bd9ad482599">~basic_observer</a>() = <span class="keywordflow">default</span>;</div>
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<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  </div>
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<div class="line"><a name="l00311"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a03dcb6b0999d29bc39410d7ae6d9ac53"> 311</a></span>  <a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> & <a class="code" href="classentt_1_1basic__observer.html#a03dcb6b0999d29bc39410d7ae6d9ac53">operator=</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &) = <span class="keyword">delete</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="l00317"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a8b7cd199f236a4dee02f202ec0fd6281"> 317</a></span>  <a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> & <a class="code" href="classentt_1_1basic__observer.html#a8b7cd199f236a4dee02f202ec0fd6281">operator=</a>(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &&) = <span class="keyword">delete</span>;</div>
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<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  </div>
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<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... Matcher></div>
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<div class="line"><a name="l00325"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a7d69a8bc866b01cc677de492bc436209"> 325</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1basic__observer.html#a7d69a8bc866b01cc677de492bc436209">connect</a>(<a class="code" href="classentt_1_1basic__registry.html">basic_registry<entity_type></a> &reg, <a class="code" href="structentt_1_1basic__collector.html">basic_collector<Matcher...></a>) {</div>
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<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <a class="code" href="classentt_1_1basic__observer.html#a1337e8f885ca963383e5a3ed2a354955">disconnect</a>();</div>
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<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  connect<Matcher...>(reg, std::index_sequence_for<Matcher...>{});</div>
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<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <a class="code" href="classentt_1_1basic__view.html">view</a>.clear();</div>
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<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  }</div>
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<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  </div>
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<div class="line"><a name="l00332"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a1337e8f885ca963383e5a3ed2a354955"> 332</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1basic__observer.html#a1337e8f885ca963383e5a3ed2a354955">disconnect</a>() {</div>
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<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordflow">if</span>(release) {</div>
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<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  release(*<span class="keyword">this</span>);</div>
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<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  release.reset();</div>
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<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  }</div>
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<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  }</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="l00343"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a17bb685d6b0aa60481355dc36fe01f38"> 343</a></span>  [[nodiscard]] <a class="code" href="classentt_1_1basic__observer.html#a147a0e35035fc3c19b67b31d66d2d80b">size_type</a> <a class="code" href="classentt_1_1basic__observer.html#a17bb685d6b0aa60481355dc36fe01f38">size</a>() const ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1basic__view.html">view</a>.size();</div>
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<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  }</div>
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<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  </div>
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<div class="line"><a name="l00351"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#ae8a12b1fcf4721ad4067d2a8146992bf"> 351</a></span>  [[nodiscard]] <span class="keywordtype">bool</span> <a class="code" href="classentt_1_1basic__observer.html#ae8a12b1fcf4721ad4067d2a8146992bf">empty</a>() const ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1basic__view.html">view</a>.empty();</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="l00367"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#ab5c179b05b96173f1e371ae8622bbb49"> 367</a></span>  [[nodiscard]] <span class="keyword">const</span> <a class="code" href="classentt_1_1basic__observer.html#af7a57f53ed7a6c835129480ff6594f7d">entity_type</a> * <a class="code" href="classentt_1_1basic__observer.html#ab5c179b05b96173f1e371ae8622bbb49">data</a>() const ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1basic__view.html">view</a>.data();</div>
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<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  }</div>
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<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  </div>
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<div class="line"><a name="l00379"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a5c0ea51acb993d6cf4cf88d68ea7fd11"> 379</a></span>  [[nodiscard]] <a class="code" href="classentt_1_1basic__observer.html#a3b57e5efae80301542b1b4011debb680">iterator</a> <a class="code" href="classentt_1_1basic__observer.html#a5c0ea51acb993d6cf4cf88d68ea7fd11">begin</a>() const ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1basic__view.html">view</a>.basic_sparse_set<entity_type>::begin();</div>
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<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  }</div>
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<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  </div>
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<div class="line"><a name="l00393"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a341f56706be1c2dd80ecba885a52af31"> 393</a></span>  [[nodiscard]] <a class="code" href="classentt_1_1basic__observer.html#a3b57e5efae80301542b1b4011debb680">iterator</a> <a class="code" href="classentt_1_1basic__observer.html#a341f56706be1c2dd80ecba885a52af31">end</a>() const ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1basic__view.html">view</a>.basic_sparse_set<entity_type>::end();</div>
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<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  }</div>
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<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  </div>
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<div class="line"><a name="l00398"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#abc321a1ee0f053785e872af32ab374ff"> 398</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1basic__observer.html#abc321a1ee0f053785e872af32ab374ff">clear</a>() ENTT_NOEXCEPT {</div>
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<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <a class="code" href="classentt_1_1basic__view.html">view</a>.clear();</div>
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<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  }</div>
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<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  </div>
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<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Func></div>
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<div class="line"><a name="l00416"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a181a6724835a3a41e33610003f738525"> 416</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1basic__observer.html#a181a6724835a3a41e33610003f738525">each</a>(Func func)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordflow">for</span>(<span class="keyword">const</span> <span class="keyword">auto</span> <a class="code" href="namespaceentt.html#a0b54e231d069e8a231e14b223388808a">entity</a>: *<span class="keyword">this</span>) {</div>
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<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  func(<a class="code" href="namespaceentt.html#a0b54e231d069e8a231e14b223388808a">entity</a>);</div>
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<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  }</div>
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<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  }</div>
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<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  </div>
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<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Func></div>
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<div class="line"><a name="l00432"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a535f3ddf32641a54e1c8861519933c97"> 432</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1basic__observer.html#a535f3ddf32641a54e1c8861519933c97">each</a>(Func func) {</div>
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<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  std::as_const(*this).each(std::move(func));</div>
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<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <a class="code" href="classentt_1_1basic__observer.html#abc321a1ee0f053785e872af32ab374ff">clear</a>();</div>
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<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  }</div>
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<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  </div>
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<div class="line"><a name="l00437"></a><span class="lineno"> 437</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <a class="code" href="classentt_1_1delegate.html">delegate</a><void(<a class="code" href="classentt_1_1basic__observer.html">basic_observer</a> &)> release;</div>
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<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <a class="code" href="classentt_1_1basic__storage.html">basic_storage<entity_type, payload_type></a> <a class="code" href="classentt_1_1basic__view.html">view</a>;</div>
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<div class="line"><a name="l00440"></a><span class="lineno"> 440</span> };</div>
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<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  </div>
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<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  </div>
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<div class="line"><a name="l00443"></a><span class="lineno"> 443</span> }</div>
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<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  </div>
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<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  </div>
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<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="preprocessor">#endif</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<div class="ttc" id="aclassentt_1_1basic__observer_html"><div class="ttname"><a href="classentt_1_1basic__observer.html">entt::basic_observer</a></div><div class="ttdoc">Observer.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00172">observer.hpp:172</a></div></div>
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<div class="ttc" id="astructentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb_html_ac9497e14628be6c9fa2758bc5fffb373"><div class="ttname"><a href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#ac9497e14628be6c9fa2758bc5fffb373">entt::basic_collector< matcher< type_list< Reject... >, type_list< Require... >, Rule... >, Other... >::where</a></div><div class="ttdeci">static constexpr auto where(exclude_t< NoneOf... >={}) noexcept</div><div class="ttdoc">Updates the filter of the last added matcher.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00111">observer.hpp:111</a></div></div>
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<div class="ttc" id="astructentt_1_1type__list_html"><div class="ttname"><a href="structentt_1_1type__list.html">entt::type_list</a></div><div class="ttdoc">A class to use to push around lists of types, nothing more.</div><div class="ttdef"><b>Definition:</b> <a href="core_2type__traits_8hpp_source.html#l00127">type_traits.hpp:127</a></div></div>
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<div class="ttc" id="astructentt_1_1basic__collector_3_4_html"><div class="ttname"><a href="structentt_1_1basic__collector_3_4.html">entt::basic_collector<></a></div><div class="ttdoc">Collector.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00047">observer.hpp:47</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a5c0ea51acb993d6cf4cf88d68ea7fd11"><div class="ttname"><a href="classentt_1_1basic__observer.html#a5c0ea51acb993d6cf4cf88d68ea7fd11">entt::basic_observer::begin</a></div><div class="ttdeci">iterator begin() const noexcept</div><div class="ttdoc">Returns an iterator to the first entity of the observer.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00379">observer.hpp:379</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a341f56706be1c2dd80ecba885a52af31"><div class="ttname"><a href="classentt_1_1basic__observer.html#a341f56706be1c2dd80ecba885a52af31">entt::basic_observer::end</a></div><div class="ttdeci">iterator end() const noexcept</div><div class="ttdoc">Returns an iterator that is past the last entity of the observer.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00393">observer.hpp:393</a></div></div>
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<div class="ttc" id="astructentt_1_1matcher_html"><div class="ttname"><a href="structentt_1_1matcher.html">entt::matcher</a></div><div class="ttdoc">Grouping matcher.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00025">observer.hpp:25</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a535f3ddf32641a54e1c8861519933c97"><div class="ttname"><a href="classentt_1_1basic__observer.html#a535f3ddf32641a54e1c8861519933c97">entt::basic_observer::each</a></div><div class="ttdeci">void each(Func func)</div><div class="ttdoc">Iterates entities and applies the given function object to them, then clears the observer.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00432">observer.hpp:432</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_ae8a12b1fcf4721ad4067d2a8146992bf"><div class="ttname"><a href="classentt_1_1basic__observer.html#ae8a12b1fcf4721ad4067d2a8146992bf">entt::basic_observer::empty</a></div><div class="ttdeci">bool empty() const noexcept</div><div class="ttdoc">Checks whether an observer is empty.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00351">observer.hpp:351</a></div></div>
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<div class="ttc" id="astructentt_1_1exclude__t_html"><div class="ttname"><a href="structentt_1_1exclude__t.html">entt::exclude_t</a></div><div class="ttdoc">Alias for exclusion lists.</div><div class="ttdef"><b>Definition:</b> <a href="entity_2utility_8hpp_source.html#l00016">utility.hpp:16</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_af7a57f53ed7a6c835129480ff6594f7d"><div class="ttname"><a href="classentt_1_1basic__observer.html#af7a57f53ed7a6c835129480ff6594f7d">entt::basic_observer::entity_type</a></div><div class="ttdeci">Entity entity_type</div><div class="ttdoc">Underlying entity identifier.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00275">observer.hpp:275</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__storage_html"><div class="ttname"><a href="classentt_1_1basic__storage.html">entt::basic_storage< entity_type, payload_type ></a></div></div>
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<div class="ttc" id="astructentt_1_1basic__collector_3_4_html_a13ce2f2ee1d5e8c852fa055cb693a210"><div class="ttname"><a href="structentt_1_1basic__collector_3_4.html#a13ce2f2ee1d5e8c852fa055cb693a210">entt::basic_collector<>::update</a></div><div class="ttdeci">static constexpr auto update() noexcept</div><div class="ttdoc">Adds an observing matcher to the collector.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00065">observer.hpp:65</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_abc321a1ee0f053785e872af32ab374ff"><div class="ttname"><a href="classentt_1_1basic__observer.html#abc321a1ee0f053785e872af32ab374ff">entt::basic_observer::clear</a></div><div class="ttdeci">void clear() noexcept</div><div class="ttdoc">Clears the underlying container.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00398">observer.hpp:398</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a181a6724835a3a41e33610003f738525"><div class="ttname"><a href="classentt_1_1basic__observer.html#a181a6724835a3a41e33610003f738525">entt::basic_observer::each</a></div><div class="ttdeci">void each(Func func) const</div><div class="ttdoc">Iterates entities and applies the given function object to them.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00416">observer.hpp:416</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_abef3c847acf610f1a6f856b05f0f0721"><div class="ttname"><a href="classentt_1_1basic__observer.html#abef3c847acf610f1a6f856b05f0f0721">entt::basic_observer::basic_observer</a></div><div class="ttdeci">basic_observer(basic_registry< entity_type > &reg, basic_collector< Matcher... >)</div><div class="ttdoc">Creates an observer and connects it to a given registry.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00298">observer.hpp:298</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a3b57e5efae80301542b1b4011debb680"><div class="ttname"><a href="classentt_1_1basic__observer.html#a3b57e5efae80301542b1b4011debb680">entt::basic_observer::iterator</a></div><div class="ttdeci">typename basic_sparse_set< Entity >::iterator iterator</div><div class="ttdoc">Random access iterator type.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00279">observer.hpp:279</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_accbe2546b1b74de1a59e673cb6250413"><div class="ttname"><a href="classentt_1_1basic__observer.html#accbe2546b1b74de1a59e673cb6250413">entt::basic_observer::basic_observer</a></div><div class="ttdeci">basic_observer(basic_observer &&)=delete</div><div class="ttdoc">Default move constructor, deleted on purpose.</div></div>
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<div class="ttc" id="aclassentt_1_1basic__storage_html_af7eca6c57538e87443ce9be3f294c563"><div class="ttname"><a href="classentt_1_1basic__storage.html#af7eca6c57538e87443ce9be3f294c563">entt::basic_storage::emplace</a></div><div class="ttdeci">value_type & emplace(const entity_type entt, Args &&... args)</div><div class="ttdoc">Assigns an entity to a storage and constructs its object.</div><div class="ttdef"><b>Definition:</b> <a href="storage_8hpp_source.html#l00370">storage.hpp:370</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__sparse__set_html_ac1ec801822e07322ff37412472bc040a"><div class="ttname"><a href="classentt_1_1basic__sparse__set.html#ac1ec801822e07322ff37412472bc040a">entt::basic_sparse_set::iterator</a></div><div class="ttdeci">sparse_set_iterator iterator</div><div class="ttdoc">Random access iterator type.</div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00186">sparse_set.hpp:186</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#l00013">algorithm.hpp:13</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__storage_html_a2ed5094d61941d46c34e6e18fd73f578"><div class="ttname"><a href="classentt_1_1basic__storage.html#a2ed5094d61941d46c34e6e18fd73f578">entt::basic_storage::get</a></div><div class="ttdeci">const value_type & get(const entity_type entt) const</div><div class="ttdoc">Returns the object associated with an entity.</div><div class="ttdef"><b>Definition:</b> <a href="storage_8hpp_source.html#l00344">storage.hpp:344</a></div></div>
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<div class="ttc" id="astructentt_1_1basic__collector_3_4_html_a1e948449e1102be0df84120d1422267b"><div class="ttname"><a href="structentt_1_1basic__collector_3_4.html#a1e948449e1102be0df84120d1422267b">entt::basic_collector<>::group</a></div><div class="ttdeci">static constexpr auto group(exclude_t< NoneOf... >={}) noexcept</div><div class="ttdoc">Adds a grouping matcher to the collector.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00055">observer.hpp:55</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_aa685204c94266b5631c13540012e73c2"><div class="ttname"><a href="classentt_1_1basic__observer.html#aa685204c94266b5631c13540012e73c2">entt::basic_observer::basic_observer</a></div><div class="ttdeci">basic_observer(const basic_observer &)=delete</div><div class="ttdoc">Default copy constructor, deleted on purpose.</div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_ab5c179b05b96173f1e371ae8622bbb49"><div class="ttname"><a href="classentt_1_1basic__observer.html#ab5c179b05b96173f1e371ae8622bbb49">entt::basic_observer::data</a></div><div class="ttdeci">const entity_type * data() const noexcept</div><div class="ttdoc">Direct access to the list of entities of the observer.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00367">observer.hpp:367</a></div></div>
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<div class="ttc" id="aclassentt_1_1any_html"><div class="ttname"><a href="classentt_1_1any.html">entt::any</a></div><div class="ttdoc">A SBO friendly, type-safe container for single values of any type.</div><div class="ttdef"><b>Definition:</b> <a href="any_8hpp_source.html#l00018">any.hpp:18</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a8b7cd199f236a4dee02f202ec0fd6281"><div class="ttname"><a href="classentt_1_1basic__observer.html#a8b7cd199f236a4dee02f202ec0fd6281">entt::basic_observer::operator=</a></div><div class="ttdeci">basic_observer & operator=(basic_observer &&)=delete</div><div class="ttdoc">Default move assignment operator, deleted on purpose.</div></div>
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<div class="ttc" id="astructentt_1_1basic__collector_html"><div class="ttname"><a href="structentt_1_1basic__collector.html">entt::basic_collector</a></div><div class="ttdoc">Collector.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00035">observer.hpp:35</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_afb6fbd2a5ce7bc57013b0bd9ad482599"><div class="ttname"><a href="classentt_1_1basic__observer.html#afb6fbd2a5ce7bc57013b0bd9ad482599">entt::basic_observer::~basic_observer</a></div><div class="ttdeci">~basic_observer()=default</div><div class="ttdoc">Default destructor.</div></div>
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<div class="ttc" id="anamespaceentt_html_aea8b073b774362fe800d9cce3542927a"><div class="ttname"><a href="namespaceentt.html#aea8b073b774362fe800d9cce3542927a">entt::collector</a></div><div class="ttdeci">constexpr basic_collector collector</div><div class="ttdoc">Variable template used to ease the definition of collectors.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00119">observer.hpp:119</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a147a0e35035fc3c19b67b31d66d2d80b"><div class="ttname"><a href="classentt_1_1basic__observer.html#a147a0e35035fc3c19b67b31d66d2d80b">entt::basic_observer::size_type</a></div><div class="ttdeci">std::size_t size_type</div><div class="ttdoc">Unsigned integer type.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00277">observer.hpp:277</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__registry_html"><div class="ttname"><a href="classentt_1_1basic__registry.html">entt::basic_registry</a></div><div class="ttdoc">Fast and reliable entity-component system.</div><div class="ttdef"><b>Definition:</b> <a href="registry_8hpp_source.html#l00044">registry.hpp:44</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a7d69a8bc866b01cc677de492bc436209"><div class="ttname"><a href="classentt_1_1basic__observer.html#a7d69a8bc866b01cc677de492bc436209">entt::basic_observer::connect</a></div><div class="ttdeci">void connect(basic_registry< entity_type > &reg, basic_collector< Matcher... >)</div><div class="ttdoc">Connects an observer to a given registry.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00325">observer.hpp:325</a></div></div>
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<div class="ttc" id="astructentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb_html_aa0d0dc1a30f20f45bf5e7ce15d7d0a62"><div class="ttname"><a href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#aa0d0dc1a30f20f45bf5e7ce15d7d0a62">entt::basic_collector< matcher< type_list< Reject... >, type_list< Require... >, Rule... >, Other... >::group</a></div><div class="ttdeci">static constexpr auto group(exclude_t< NoneOf... >={}) noexcept</div><div class="ttdoc">Adds a grouping matcher to the collector.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00090">observer.hpp:90</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a17bb685d6b0aa60481355dc36fe01f38"><div class="ttname"><a href="classentt_1_1basic__observer.html#a17bb685d6b0aa60481355dc36fe01f38">entt::basic_observer::size</a></div><div class="ttdeci">size_type size() const noexcept</div><div class="ttdoc">Returns the number of elements in an observer.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00343">observer.hpp:343</a></div></div>
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<div class="ttc" id="astructentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb_html_a57c1366ef7a47ff4e859deddaa8e8f64"><div class="ttname"><a href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#a57c1366ef7a47ff4e859deddaa8e8f64">entt::basic_collector< matcher< type_list< Reject... >, type_list< Require... >, Rule... >, Other... >::update</a></div><div class="ttdeci">static constexpr auto update() noexcept</div><div class="ttdoc">Adds an observing matcher to the collector.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00100">observer.hpp:100</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__view_html"><div class="ttname"><a href="classentt_1_1basic__view.html">entt::basic_view</a></div><div class="ttdoc">View.</div><div class="ttdef"><b>Definition:</b> <a href="entity_2fwd_8hpp_source.html#l00024">fwd.hpp:24</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a03dcb6b0999d29bc39410d7ae6d9ac53"><div class="ttname"><a href="classentt_1_1basic__observer.html#a03dcb6b0999d29bc39410d7ae6d9ac53">entt::basic_observer::operator=</a></div><div class="ttdeci">basic_observer & operator=(const basic_observer &)=delete</div><div class="ttdoc">Default copy assignment operator, deleted on purpose.</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#l00082">delegate.hpp:82</a></div></div>
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<div class="ttc" id="anamespaceentt_html_a0b54e231d069e8a231e14b223388808a"><div class="ttname"><a href="namespaceentt.html#a0b54e231d069e8a231e14b223388808a">entt::entity</a></div><div class="ttdeci">entity</div><div class="ttdoc">Default entity identifier.</div><div class="ttdef"><b>Definition:</b> <a href="entity_2fwd_8hpp_source.html#l00060">fwd.hpp:60</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_adfb08de0ef1c0f57fadc6f6d171b931a"><div class="ttname"><a href="classentt_1_1basic__observer.html#adfb08de0ef1c0f57fadc6f6d171b931a">entt::basic_observer::basic_observer</a></div><div class="ttdeci">basic_observer()</div><div class="ttdoc">Default constructor.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00282">observer.hpp:282</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a1337e8f885ca963383e5a3ed2a354955"><div class="ttname"><a href="classentt_1_1basic__observer.html#a1337e8f885ca963383e5a3ed2a354955">entt::basic_observer::disconnect</a></div><div class="ttdeci">void disconnect()</div><div class="ttdoc">Disconnects an observer from the registry it keeps track of.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00332">observer.hpp:332</a></div></div>
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