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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="fragment"><div class="line"><a id="l00001" 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 id="l00002" 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 id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include <cstddef></span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include <cstdint></span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include <limits></span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include <type_traits></span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include <utility></span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include "../core/type_traits.hpp"</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include "../signal/delegate.hpp"</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include "fwd.hpp"</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include "storage.hpp"</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceentt.html">entt</a> {</div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="keyword">template</span><<span class="keyword">typename</span>...></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"><a class="line" href="structentt_1_1matcher.html"> 18</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structentt_1_1matcher.html">matcher</a> {};</div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="keyword">template</span><<span class="keyword">typename</span>...></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector.html"> 27</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structentt_1_1basic__collector.html">basic_collector</a>;</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="keyword">template</span><></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_4.html"> 38</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structentt_1_1basic__collector_3_4.html">basic_collector<></a> {</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</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 id="l00046" name="l00046"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_4.html#a718ff87ec2db7fa4332b2b3d47a7998f"> 46</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> <a class="code hl_function" href="structentt_1_1basic__collector_3_4.html#a718ff87ec2db7fa4332b2b3d47a7998f">group</a>(<a class="code hl_struct" href="structentt_1_1exclude__t.html">exclude_t<NoneOf...></a> = <a class="code hl_struct" href="structentt_1_1exclude__t.html">exclude_t</a>{}) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="structentt_1_1basic__collector.html">basic_collector<matcher<type_list<></a>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list<></a>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><NoneOf...>, AllOf...>>{};</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> }</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">template</span><<span class="keyword">typename</span> AnyOf></div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"><a class="line" href="structentt_1_1basic__collector_3_4.html#a13ce2f2ee1d5e8c852fa055cb693a210"> 56</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> <a class="code hl_function" href="structentt_1_1basic__collector_3_4.html#a13ce2f2ee1d5e8c852fa055cb693a210">update</a>() noexcept {</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="structentt_1_1basic__collector.html">basic_collector<matcher<type_list<></a>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list<></a>, AnyOf>>{};</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> }</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span>};</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> </div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</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 id="l00070" name="l00070"></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"> 70</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structentt_1_1basic__collector.html">basic_collector</a><<a class="code hl_struct" href="structentt_1_1matcher.html">matcher</a><<a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><Reject...>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><Require...>, Rule...>, Other...> {</div>
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<div class="line"><a id="l00072" name="l00072"></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"> 72</a></span> <span class="keyword">using </span><a class="code hl_struct" href="structentt_1_1matcher.html">current_type</a> = <a class="code hl_struct" href="structentt_1_1matcher.html">matcher</a><<a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><Reject...>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><Require...>, Rule...>;</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</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 id="l00081" 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#a84a5b944f463c1b1e1907a2906793b54"> 81</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> <a class="code hl_function" href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#a84a5b944f463c1b1e1907a2906793b54">group</a>(<a class="code hl_struct" href="structentt_1_1exclude__t.html">exclude_t<NoneOf...></a> = <a class="code hl_struct" href="structentt_1_1exclude__t.html">exclude_t</a>{}) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="structentt_1_1basic__collector.html">basic_collector<matcher<type_list<></a>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list<></a>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><NoneOf...>, AllOf...>, current_type, Other...>{};</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> }</div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">template</span><<span class="keyword">typename</span> AnyOf></div>
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<div class="line"><a id="l00091" name="l00091"></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"> 91</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> <a class="code hl_function" 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>() noexcept {</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="structentt_1_1basic__collector.html">basic_collector<matcher<type_list<></a>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list<></a>, AnyOf>, <a class="code hl_struct" href="structentt_1_1matcher.html">current_type</a>, Other...>{};</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> }</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> </div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</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 id="l00102" name="l00102"></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#add41fb03c0e129a63e616501cc2e1ea4"> 102</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> <a class="code hl_function" href="structentt_1_1basic__collector_3_01matcher_3_01type__list_3_01Reject_8_8_8_01_4_00_01type__list_98a79514dcad34a82f321f0796064ffb.html#add41fb03c0e129a63e616501cc2e1ea4">where</a>(<a class="code hl_struct" href="structentt_1_1exclude__t.html">exclude_t<NoneOf...></a> = <a class="code hl_struct" href="structentt_1_1exclude__t.html">exclude_t</a>{}) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">using </span>extended_type = <a class="code hl_struct" href="structentt_1_1matcher.html">matcher</a><<a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><Reject..., NoneOf...>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><Require..., AllOf...>, Rule...>;</div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="structentt_1_1basic__collector.html">basic_collector</a><extended_type, Other...>{};</div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> }</div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span>};</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> </div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"><a class="line" href="namespaceentt.html#aea8b073b774362fe800d9cce3542927a"> 109</a></span><span class="keyword">inline</span> <span class="keyword">constexpr</span> <a class="code hl_struct" href="structentt_1_1basic__collector_3_4.html">basic_collector<></a> <a class="code hl_variable" href="namespaceentt.html#aea8b073b774362fe800d9cce3542927a">collector</a>{};</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> </div>
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<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span><span class="keyword">template</span><<span class="keyword">typename</span> Registry, <span class="keyword">typename</span> Mask, <span class="keyword">typename</span> Allocator></div>
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<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html"> 162</a></span><span class="keyword">class </span><a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a>: <span class="keyword">private</span> <a class="code hl_class" href="classentt_1_1basic__storage.html">basic_storage</a><Mask, typename Registry::entity_type, Allocator> {</div>
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<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> <span class="keyword">using </span><a class="code hl_class" href="classentt_1_1basic__storage.html">base_type</a> = <a class="code hl_class" href="classentt_1_1basic__storage.html">basic_storage<Mask, typename Registry::entity_type, Allocator></a>;</div>
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<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> </div>
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<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keyword">template</span><<span class="keyword">typename</span>></div>
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<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> <span class="keyword">struct </span>matcher_handler;</div>
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<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> </div>
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<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</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 id="l00169" name="l00169"></a><span class="lineno"> 169</span> <span class="keyword">struct </span>matcher_handler<<a class="code hl_struct" href="structentt_1_1matcher.html">matcher</a><<a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><Reject...>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><Require...>, AnyOf>> {</div>
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<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> <span class="keyword">template</span><std::<span class="keywordtype">size_t</span> Index></div>
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="keyword">static</span> <span class="keywordtype">void</span> maybe_valid_if(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, Registry &reg, <span class="keyword">const</span> <span class="keyword">typename</span> Registry::entity_type <a class="code hl_namespace" href="namespaceentt.html">entt</a>) {</div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keywordflow">if</span>(reg.template all_of<Require...>(<a class="code hl_namespace" href="namespaceentt.html">entt</a>) && !reg.template any_of<Reject...>(<a class="code hl_namespace" href="namespaceentt.html">entt</a>)) {</div>
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<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="keywordflow">if</span>(!obs.contains(<a class="code hl_namespace" href="namespaceentt.html">entt</a>)) {</div>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> obs.emplace(<a class="code hl_namespace" href="namespaceentt.html">entt</a>);</div>
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<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> }</div>
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<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> </div>
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<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> obs.get(<a class="code hl_namespace" href="namespaceentt.html">entt</a>) |= (1 << Index);</div>
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<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> }</div>
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<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> }</div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> </div>
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<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">template</span><std::<span class="keywordtype">size_t</span> Index></div>
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<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="keyword">static</span> <span class="keywordtype">void</span> discard_if(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, Registry &, <span class="keyword">const</span> <span class="keyword">typename</span> Registry::entity_type <a class="code hl_namespace" href="namespaceentt.html">entt</a>) {</div>
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<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="keywordflow">if</span>(obs.contains(<a class="code hl_namespace" href="namespaceentt.html">entt</a>) && !(obs.get(<a class="code hl_namespace" href="namespaceentt.html">entt</a>) &= (~(1 << Index)))) {</div>
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<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> obs.erase(<a class="code hl_namespace" href="namespaceentt.html">entt</a>);</div>
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<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> }</div>
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<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> }</div>
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<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> </div>
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<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> <span class="keyword">template</span><std::<span class="keywordtype">size_t</span> Index></div>
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<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="keyword">static</span> <span class="keywordtype">void</span> connect(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, Registry &reg) {</div>
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<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> (reg.template on_destroy<Require>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> (reg.template on_construct<Reject>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> reg.template on_update<AnyOf>().template connect<&maybe_valid_if<Index>>(obs);</div>
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<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> reg.template on_destroy<AnyOf>().template connect<&discard_if<Index>>(obs);</div>
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<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> }</div>
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<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> </div>
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<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#a06f2a99203ce87fde7e594ee32c8eeef">disconnect</a>(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, Registry &reg) {</div>
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<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> (reg.template on_destroy<Require>().disconnect(&obs), ...);</div>
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<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> (reg.template on_construct<Reject>().disconnect(&obs), ...);</div>
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<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> reg.template on_update<AnyOf>().disconnect(&obs);</div>
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<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> reg.template on_destroy<AnyOf>().disconnect(&obs);</div>
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<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> }</div>
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<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> };</div>
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<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> </div>
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<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</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 id="l00205" name="l00205"></a><span class="lineno"> 205</span> <span class="keyword">struct </span>matcher_handler<<a class="code hl_struct" href="structentt_1_1matcher.html">matcher</a><<a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><Reject...>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><Require...>, <a class="code hl_struct" href="structentt_1_1type__list.html">type_list</a><NoneOf...>, AllOf...>> {</div>
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<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</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 id="l00207" name="l00207"></a><span class="lineno"> 207</span> <span class="keyword">static</span> <span class="keywordtype">void</span> maybe_valid_if(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, Registry &reg, <span class="keyword">const</span> <span class="keyword">typename</span> Registry::entity_type <a class="code hl_namespace" href="namespaceentt.html">entt</a>) {</div>
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<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">auto</span> condition = [&reg, <a class="code hl_namespace" href="namespaceentt.html">entt</a>]() {</div>
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<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> <span class="keywordflow">if</span> <span class="keyword">constexpr</span>(<span class="keyword">sizeof</span>...(Ignore) == 0) {</div>
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<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> <span class="keywordflow">return</span> reg.template all_of<AllOf..., Require...>(<a class="code hl_namespace" href="namespaceentt.html">entt</a>) && !reg.template any_of<NoneOf..., Reject...>(<a class="code hl_namespace" href="namespaceentt.html">entt</a>);</div>
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<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> <span class="keywordflow">return</span> reg.template all_of<AllOf..., Require...>(<a class="code hl_namespace" href="namespaceentt.html">entt</a>) && ((std::is_same_v<Ignore..., NoneOf> || !reg.template any_of<NoneOf>(<a class="code hl_namespace" href="namespaceentt.html">entt</a>)) && ...) && !reg.template any_of<Reject...>(<a class="code hl_namespace" href="namespaceentt.html">entt</a>);</div>
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<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> }</div>
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<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> };</div>
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<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> </div>
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<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> <span class="keywordflow">if</span>(condition()) {</div>
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<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> <span class="keywordflow">if</span>(!obs.contains(<a class="code hl_namespace" href="namespaceentt.html">entt</a>)) {</div>
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<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> obs.emplace(<a class="code hl_namespace" href="namespaceentt.html">entt</a>);</div>
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<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> }</div>
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<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> </div>
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<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> obs.get(<a class="code hl_namespace" href="namespaceentt.html">entt</a>) |= (1 << Index);</div>
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<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> }</div>
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<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> }</div>
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<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> </div>
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<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> <span class="keyword">template</span><std::<span class="keywordtype">size_t</span> Index></div>
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<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> <span class="keyword">static</span> <span class="keywordtype">void</span> discard_if(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, Registry &, <span class="keyword">const</span> <span class="keyword">typename</span> Registry::entity_type <a class="code hl_namespace" href="namespaceentt.html">entt</a>) {</div>
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<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> <span class="keywordflow">if</span>(obs.contains(<a class="code hl_namespace" href="namespaceentt.html">entt</a>) && !(obs.get(<a class="code hl_namespace" href="namespaceentt.html">entt</a>) &= (~(1 << Index)))) {</div>
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<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> obs.erase(<a class="code hl_namespace" href="namespaceentt.html">entt</a>);</div>
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<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> }</div>
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<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> }</div>
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<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> </div>
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<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> <span class="keyword">template</span><std::<span class="keywordtype">size_t</span> Index></div>
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<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <span class="keyword">static</span> <span class="keywordtype">void</span> connect(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, Registry &reg) {</div>
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<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> (reg.template on_destroy<Require>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> (reg.template on_construct<Reject>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> (reg.template on_construct<AllOf>().template connect<&maybe_valid_if<Index>>(obs), ...);</div>
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<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> (reg.template on_destroy<NoneOf>().template connect<&maybe_valid_if<Index, NoneOf>>(obs), ...);</div>
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<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> (reg.template on_destroy<AllOf>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> (reg.template on_construct<NoneOf>().template connect<&discard_if<Index>>(obs), ...);</div>
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<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> }</div>
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<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> </div>
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<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#a06f2a99203ce87fde7e594ee32c8eeef">disconnect</a>(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &obs, Registry &reg) {</div>
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<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> (reg.template on_destroy<Require>().disconnect(&obs), ...);</div>
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<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> (reg.template on_construct<Reject>().disconnect(&obs), ...);</div>
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<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> (reg.template on_construct<AllOf>().disconnect(&obs), ...);</div>
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<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> (reg.template on_destroy<NoneOf>().disconnect(&obs), ...);</div>
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<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> (reg.template on_destroy<AllOf>().disconnect(&obs), ...);</div>
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<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> (reg.template on_construct<NoneOf>().disconnect(&obs), ...);</div>
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<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> }</div>
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<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> };</div>
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<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> </div>
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<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> <span class="keyword">template</span><<span class="keyword">typename</span>... Matcher></div>
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<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#a06f2a99203ce87fde7e594ee32c8eeef">disconnect</a>(Registry &reg, <a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &obs) {</div>
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<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> (matcher_handler<Matcher>::disconnect(obs, reg), ...);</div>
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<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> }</div>
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<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> </div>
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<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</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 id="l00258" name="l00258"></a><span class="lineno"> 258</span> <span class="keywordtype">void</span> connect(Registry &reg, std::index_sequence<Index...>) {</div>
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<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> <span class="keyword">static_assert</span>(<span class="keyword">sizeof</span>...(Matcher) < std::numeric_limits<typename base_type::value_type>::digits, <span class="stringliteral">"Too many matchers"</span>);</div>
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<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> (matcher_handler<Matcher>::template connect<Index>(*<span class="keyword">this</span>, reg), ...);</div>
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<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> release.template connect<&<a class="code hl_function" href="classentt_1_1basic__observer.html#a06f2a99203ce87fde7e594ee32c8eeef">basic_observer::disconnect</a><Matcher...>>(reg);</div>
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<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> }</div>
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<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> </div>
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<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span><span class="keyword">public</span>:</div>
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<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a021a064e7fbcb947358ffb6a46e5c04b"> 266</a></span> <span class="keyword">using </span><a class="code hl_typedef" href="classentt_1_1basic__observer.html#a021a064e7fbcb947358ffb6a46e5c04b">registry_type</a> = Registry;</div>
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<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#ae3bdfe60bc117c06935edfa74d9ef61a"> 268</a></span> <span class="keyword">using </span><a class="code hl_typedef" href="classentt_1_1basic__observer.html#ae3bdfe60bc117c06935edfa74d9ef61a">entity_type</a> = <span class="keyword">typename</span> registry_type::entity_type;</div>
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<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#af22100cd6a23b5853a26bb783169cdce"> 270</a></span> <span class="keyword">using </span><a class="code hl_typedef" href="classentt_1_1basic__observer.html#af22100cd6a23b5853a26bb783169cdce">size_type</a> = std::size_t;</div>
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<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a930d26323c8cfacaf63e82b0b740ca12"> 272</a></span> <span class="keyword">using </span><a class="code hl_typedef" href="classentt_1_1basic__observer.html#a930d26323c8cfacaf63e82b0b740ca12">allocator_type</a> = Allocator;</div>
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<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a5f34b4d0a80edd7b05a9d47687e0d75f"> 274</a></span> <span class="keyword">using </span><a class="code hl_typedef" href="classentt_1_1basic__observer.html#a5f34b4d0a80edd7b05a9d47687e0d75f">iterator</a> = <span class="keyword">typename</span> registry_type::common_type::iterator;</div>
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<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> </div>
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<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#abf191f17057f7452d5a4e621790c7a29"> 277</a></span> <a class="code hl_function" href="classentt_1_1basic__observer.html#abf191f17057f7452d5a4e621790c7a29">basic_observer</a>()</div>
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<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> : <a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a>{<a class="code hl_typedef" href="classentt_1_1basic__observer.html#a930d26323c8cfacaf63e82b0b740ca12">allocator_type</a>{}} {}</div>
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<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> </div>
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<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a05fb1d837929dfaa63a49cf37f486a7b"> 284</a></span> <span class="keyword">explicit</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#a05fb1d837929dfaa63a49cf37f486a7b">basic_observer</a>(<span class="keyword">const</span> <a class="code hl_typedef" href="classentt_1_1basic__observer.html#a930d26323c8cfacaf63e82b0b740ca12">allocator_type</a> &allocator)</div>
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<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> : <a class="code hl_class" href="classentt_1_1basic__storage.html">base_type</a>{allocator},</div>
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<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> release{} {}</div>
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<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> </div>
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<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#af0b1293a9cf82a352441255fe0e461b9"> 289</a></span> <a class="code hl_function" href="classentt_1_1basic__observer.html#af0b1293a9cf82a352441255fe0e461b9">basic_observer</a>(<span class="keyword">const</span> <a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &) = <span class="keyword">delete</span>;</div>
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<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> </div>
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<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a5e6d495dda4fa4d45ca823860117a7cb"> 292</a></span> <a class="code hl_function" href="classentt_1_1basic__observer.html#a5e6d495dda4fa4d45ca823860117a7cb">basic_observer</a>(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &&) = <span class="keyword">delete</span>;</div>
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<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> </div>
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<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> <span class="keyword">template</span><<span class="keyword">typename</span>... Matcher></div>
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<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#ab58e084e9afa69dbd05626e062f9602b"> 301</a></span> <a class="code hl_function" href="classentt_1_1basic__observer.html#ab58e084e9afa69dbd05626e062f9602b">basic_observer</a>(<a class="code hl_typedef" href="classentt_1_1basic__observer.html#a021a064e7fbcb947358ffb6a46e5c04b">registry_type</a> &reg, <a class="code hl_struct" href="structentt_1_1basic__collector.html">basic_collector<Matcher...></a>, <span class="keyword">const</span> <a class="code hl_typedef" href="classentt_1_1basic__observer.html#a930d26323c8cfacaf63e82b0b740ca12">allocator_type</a> &allocator = <a class="code hl_typedef" href="classentt_1_1basic__observer.html#a930d26323c8cfacaf63e82b0b740ca12">allocator_type</a>{})</div>
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<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> : <a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a>{allocator} {</div>
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<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span> connect<Matcher...>(reg, std::index_sequence_for<Matcher...>{});</div>
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<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> }</div>
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<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> </div>
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<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a1c363713ced7d7aceb168fb30999ed65"> 310</a></span> <a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &<a class="code hl_function" href="classentt_1_1basic__observer.html#a1c363713ced7d7aceb168fb30999ed65">operator=</a>(<span class="keyword">const</span> <a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &) = <span class="keyword">delete</span>;</div>
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<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> </div>
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<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#aa5495e24b980c64824f52b872f5dabfa"> 316</a></span> <a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &<a class="code hl_function" href="classentt_1_1basic__observer.html#aa5495e24b980c64824f52b872f5dabfa">operator=</a>(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &&) = <span class="keyword">delete</span>;</div>
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<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> </div>
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<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> <span class="keyword">template</span><<span class="keyword">typename</span>... Matcher></div>
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<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#ae8c28a1e41398e9ae08e0587e59bad48"> 324</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#ae8c28a1e41398e9ae08e0587e59bad48">connect</a>(<a class="code hl_typedef" href="classentt_1_1basic__observer.html#a021a064e7fbcb947358ffb6a46e5c04b">registry_type</a> &reg, <a class="code hl_struct" href="structentt_1_1basic__collector.html">basic_collector<Matcher...></a>) {</div>
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<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#a06f2a99203ce87fde7e594ee32c8eeef">disconnect</a>();</div>
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<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span> connect<Matcher...>(reg, std::index_sequence_for<Matcher...>{});</div>
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<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span> <a class="code hl_function" href="classentt_1_1basic__sparse__set.html#a6560773b887906122d50a413aea1faad">base_type::clear</a>();</div>
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<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span> }</div>
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<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span> </div>
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<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a06f2a99203ce87fde7e594ee32c8eeef"> 331</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#a06f2a99203ce87fde7e594ee32c8eeef">disconnect</a>() {</div>
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<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span> <span class="keywordflow">if</span>(release) {</div>
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<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span> release(*<span class="keyword">this</span>);</div>
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<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span> release.reset();</div>
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<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> }</div>
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<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> }</div>
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<div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span> </div>
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<div class="line"><a id="l00342" name="l00342"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#acf19cd47f11a4b9a65c2e31bd17ffa28"> 342</a></span> [[nodiscard]] <a class="code hl_typedef" href="classentt_1_1basic__observer.html#af22100cd6a23b5853a26bb783169cdce">size_type</a> <a class="code hl_function" href="classentt_1_1basic__observer.html#acf19cd47f11a4b9a65c2e31bd17ffa28">size</a>() const noexcept {</div>
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<div class="line"><a id="l00343" name="l00343"></a><span class="lineno"> 343</span> <span class="keywordflow">return</span> <a class="code hl_function" href="classentt_1_1basic__sparse__set.html#a69ad0662838fd351985a51ee3017fb6c">base_type::size</a>();</div>
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<div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span> }</div>
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<div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span> </div>
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<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a7238cc98aaa103fbde3c819416034648"> 350</a></span> [[nodiscard]] <span class="keywordtype">bool</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#a7238cc98aaa103fbde3c819416034648">empty</a>() const noexcept {</div>
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<div class="line"><a id="l00351" name="l00351"></a><span class="lineno"> 351</span> <span class="keywordflow">return</span> <a class="code hl_function" href="classentt_1_1basic__sparse__set.html#ad8936d80c3656449118a7a7a08be6258">base_type::empty</a>();</div>
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<div class="line"><a id="l00352" name="l00352"></a><span class="lineno"> 352</span> }</div>
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<div class="line"><a id="l00353" name="l00353"></a><span class="lineno"> 353</span> </div>
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<div class="line"><a id="l00366" name="l00366"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a11b0eea2f231d079f64075c2c23df799"> 366</a></span> [[nodiscard]] <span class="keyword">const</span> <a class="code hl_typedef" href="classentt_1_1basic__observer.html#ae3bdfe60bc117c06935edfa74d9ef61a">entity_type</a> *<a class="code hl_function" href="classentt_1_1basic__observer.html#a11b0eea2f231d079f64075c2c23df799">data</a>() const noexcept {</div>
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<div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> <span class="keywordflow">return</span> <a class="code hl_function" href="classentt_1_1basic__sparse__set.html#a4c540ff32bca204b1adbd9e4f4a0240b">base_type::data</a>();</div>
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<div class="line"><a id="l00368" name="l00368"></a><span class="lineno"> 368</span> }</div>
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<div class="line"><a id="l00369" name="l00369"></a><span class="lineno"> 369</span> </div>
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<div class="line"><a id="l00377" name="l00377"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a5bacae17f1d80e110d7d9666ecf4100b"> 377</a></span> [[nodiscard]] <a class="code hl_typedef" href="classentt_1_1basic__observer.html#a5f34b4d0a80edd7b05a9d47687e0d75f">iterator</a> <a class="code hl_function" href="classentt_1_1basic__observer.html#a5bacae17f1d80e110d7d9666ecf4100b">begin</a>() const noexcept {</div>
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<div class="line"><a id="l00378" name="l00378"></a><span class="lineno"> 378</span> <span class="keywordflow">return</span> <a class="code hl_function" href="classentt_1_1basic__storage.html#a826c6603fc4f3ed07b2453ff477f1fee">base_type::base_type::begin</a>();</div>
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<div class="line"><a id="l00379" name="l00379"></a><span class="lineno"> 379</span> }</div>
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<div class="line"><a id="l00380" name="l00380"></a><span class="lineno"> 380</span> </div>
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<div class="line"><a id="l00386" name="l00386"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a11daa4bb341b83ebaf17717a6cd84ac9"> 386</a></span> [[nodiscard]] <a class="code hl_typedef" href="classentt_1_1basic__observer.html#a5f34b4d0a80edd7b05a9d47687e0d75f">iterator</a> <a class="code hl_function" href="classentt_1_1basic__observer.html#a11daa4bb341b83ebaf17717a6cd84ac9">end</a>() const noexcept {</div>
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<div class="line"><a id="l00387" name="l00387"></a><span class="lineno"> 387</span> <span class="keywordflow">return</span> <a class="code hl_function" href="classentt_1_1basic__storage.html#a28c6c2fb6e1c840a014656568249efc1">base_type::base_type::end</a>();</div>
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<div class="line"><a id="l00388" name="l00388"></a><span class="lineno"> 388</span> }</div>
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<div class="line"><a id="l00389" name="l00389"></a><span class="lineno"> 389</span> </div>
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<div class="line"><a id="l00391" name="l00391"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#ae829e54d336b7b01851ba9fefdb14297"> 391</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#ae829e54d336b7b01851ba9fefdb14297">clear</a>() noexcept {</div>
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<div class="line"><a id="l00392" name="l00392"></a><span class="lineno"> 392</span> <a class="code hl_function" href="classentt_1_1basic__sparse__set.html#a6560773b887906122d50a413aea1faad">base_type::clear</a>();</div>
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<div class="line"><a id="l00393" name="l00393"></a><span class="lineno"> 393</span> }</div>
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<div class="line"><a id="l00394" name="l00394"></a><span class="lineno"> 394</span> </div>
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<div class="line"><a id="l00408" name="l00408"></a><span class="lineno"> 408</span> <span class="keyword">template</span><<span class="keyword">typename</span> Func></div>
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<div class="line"><a id="l00409" name="l00409"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#ab6ee0bb106fd01424ffb82a52e0826f3"> 409</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#ab6ee0bb106fd01424ffb82a52e0826f3">each</a>(Func func)<span class="keyword"> const </span>{</div>
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<div class="line"><a id="l00410" name="l00410"></a><span class="lineno"> 410</span> <span class="keywordflow">for</span>(<span class="keyword">const</span> <span class="keyword">auto</span> <a class="code hl_enumeration" href="namespaceentt.html#a0b54e231d069e8a231e14b223388808a">entity</a>: *<span class="keyword">this</span>) {</div>
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<div class="line"><a id="l00411" name="l00411"></a><span class="lineno"> 411</span> func(<a class="code hl_enumeration" href="namespaceentt.html#a0b54e231d069e8a231e14b223388808a">entity</a>);</div>
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<div class="line"><a id="l00412" name="l00412"></a><span class="lineno"> 412</span> }</div>
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<div class="line"><a id="l00413" name="l00413"></a><span class="lineno"> 413</span> }</div>
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<div class="line"><a id="l00414" name="l00414"></a><span class="lineno"> 414</span> </div>
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<div class="line"><a id="l00424" name="l00424"></a><span class="lineno"> 424</span> <span class="keyword">template</span><<span class="keyword">typename</span> Func></div>
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<div class="line"><a id="l00425" name="l00425"></a><span class="lineno"><a class="line" href="classentt_1_1basic__observer.html#a0250a672ba5770775d25cc4dd07b25b0"> 425</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#a0250a672ba5770775d25cc4dd07b25b0">each</a>(Func func) {</div>
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<div class="line"><a id="l00426" name="l00426"></a><span class="lineno"> 426</span> std::as_const(*this).each(std::move(func));</div>
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<div class="line"><a id="l00427" name="l00427"></a><span class="lineno"> 427</span> <a class="code hl_function" href="classentt_1_1basic__observer.html#ae829e54d336b7b01851ba9fefdb14297">clear</a>();</div>
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<div class="line"><a id="l00428" name="l00428"></a><span class="lineno"> 428</span> }</div>
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<div class="line"><a id="l00429" name="l00429"></a><span class="lineno"> 429</span> </div>
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<div class="line"><a id="l00430" name="l00430"></a><span class="lineno"> 430</span><span class="keyword">private</span>:</div>
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<div class="line"><a id="l00431" name="l00431"></a><span class="lineno"> 431</span> <a class="code hl_class" href="classentt_1_1delegate.html">delegate</a><void(<a class="code hl_class" href="classentt_1_1basic__observer.html">basic_observer</a> &)> release;</div>
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<div class="line"><a id="l00432" name="l00432"></a><span class="lineno"> 432</span>};</div>
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<div class="line"><a id="l00433" name="l00433"></a><span class="lineno"> 433</span> </div>
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<div class="line"><a id="l00434" name="l00434"></a><span class="lineno"> 434</span>} <span class="comment">// namespace entt</span></div>
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<div class="line"><a id="l00435" name="l00435"></a><span class="lineno"> 435</span> </div>
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<div class="line"><a id="l00436" name="l00436"></a><span class="lineno"> 436</span><span class="preprocessor">#endif</span></div>
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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#l00162">observer.hpp:162</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a021a064e7fbcb947358ffb6a46e5c04b"><div class="ttname"><a href="classentt_1_1basic__observer.html#a021a064e7fbcb947358ffb6a46e5c04b">entt::basic_observer::registry_type</a></div><div class="ttdeci">Registry registry_type</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00266">observer.hpp:266</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a0250a672ba5770775d25cc4dd07b25b0"><div class="ttname"><a href="classentt_1_1basic__observer.html#a0250a672ba5770775d25cc4dd07b25b0">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#l00425">observer.hpp:425</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a05fb1d837929dfaa63a49cf37f486a7b"><div class="ttname"><a href="classentt_1_1basic__observer.html#a05fb1d837929dfaa63a49cf37f486a7b">entt::basic_observer::basic_observer</a></div><div class="ttdeci">basic_observer(const allocator_type &allocator)</div><div class="ttdoc">Constructs an empty storage with a given allocator.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00284">observer.hpp:284</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a06f2a99203ce87fde7e594ee32c8eeef"><div class="ttname"><a href="classentt_1_1basic__observer.html#a06f2a99203ce87fde7e594ee32c8eeef">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#l00331">observer.hpp:331</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a11b0eea2f231d079f64075c2c23df799"><div class="ttname"><a href="classentt_1_1basic__observer.html#a11b0eea2f231d079f64075c2c23df799">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#l00366">observer.hpp:366</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a11daa4bb341b83ebaf17717a6cd84ac9"><div class="ttname"><a href="classentt_1_1basic__observer.html#a11daa4bb341b83ebaf17717a6cd84ac9">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#l00386">observer.hpp:386</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a1c363713ced7d7aceb168fb30999ed65"><div class="ttname"><a href="classentt_1_1basic__observer.html#a1c363713ced7d7aceb168fb30999ed65">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_1basic__observer_html_a5bacae17f1d80e110d7d9666ecf4100b"><div class="ttname"><a href="classentt_1_1basic__observer.html#a5bacae17f1d80e110d7d9666ecf4100b">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#l00377">observer.hpp:377</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a5e6d495dda4fa4d45ca823860117a7cb"><div class="ttname"><a href="classentt_1_1basic__observer.html#a5e6d495dda4fa4d45ca823860117a7cb">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__observer_html_a5f34b4d0a80edd7b05a9d47687e0d75f"><div class="ttname"><a href="classentt_1_1basic__observer.html#a5f34b4d0a80edd7b05a9d47687e0d75f">entt::basic_observer::iterator</a></div><div class="ttdeci">typename registry_type::common_type::iterator iterator</div><div class="ttdoc">Random access iterator type.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00274">observer.hpp:274</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a7238cc98aaa103fbde3c819416034648"><div class="ttname"><a href="classentt_1_1basic__observer.html#a7238cc98aaa103fbde3c819416034648">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#l00350">observer.hpp:350</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_a930d26323c8cfacaf63e82b0b740ca12"><div class="ttname"><a href="classentt_1_1basic__observer.html#a930d26323c8cfacaf63e82b0b740ca12">entt::basic_observer::allocator_type</a></div><div class="ttdeci">Allocator allocator_type</div><div class="ttdoc">Allocator type.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00272">observer.hpp:272</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_aa5495e24b980c64824f52b872f5dabfa"><div class="ttname"><a href="classentt_1_1basic__observer.html#aa5495e24b980c64824f52b872f5dabfa">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="aclassentt_1_1basic__observer_html_ab58e084e9afa69dbd05626e062f9602b"><div class="ttname"><a href="classentt_1_1basic__observer.html#ab58e084e9afa69dbd05626e062f9602b">entt::basic_observer::basic_observer</a></div><div class="ttdeci">basic_observer(registry_type &reg, basic_collector< Matcher... >, const allocator_type &allocator=allocator_type{})</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#l00301">observer.hpp:301</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_ab6ee0bb106fd01424ffb82a52e0826f3"><div class="ttname"><a href="classentt_1_1basic__observer.html#ab6ee0bb106fd01424ffb82a52e0826f3">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#l00409">observer.hpp:409</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_abf191f17057f7452d5a4e621790c7a29"><div class="ttname"><a href="classentt_1_1basic__observer.html#abf191f17057f7452d5a4e621790c7a29">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#l00277">observer.hpp:277</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_acf19cd47f11a4b9a65c2e31bd17ffa28"><div class="ttname"><a href="classentt_1_1basic__observer.html#acf19cd47f11a4b9a65c2e31bd17ffa28">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#l00342">observer.hpp:342</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_ae3bdfe60bc117c06935edfa74d9ef61a"><div class="ttname"><a href="classentt_1_1basic__observer.html#ae3bdfe60bc117c06935edfa74d9ef61a">entt::basic_observer::entity_type</a></div><div class="ttdeci">typename registry_type::entity_type entity_type</div><div class="ttdoc">Underlying entity identifier.</div><div class="ttdef"><b>Definition:</b> <a href="observer_8hpp_source.html#l00268">observer.hpp:268</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_ae829e54d336b7b01851ba9fefdb14297"><div class="ttname"><a href="classentt_1_1basic__observer.html#ae829e54d336b7b01851ba9fefdb14297">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#l00391">observer.hpp:391</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_ae8c28a1e41398e9ae08e0587e59bad48"><div class="ttname"><a href="classentt_1_1basic__observer.html#ae8c28a1e41398e9ae08e0587e59bad48">entt::basic_observer::connect</a></div><div class="ttdeci">void connect(registry_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#l00324">observer.hpp:324</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__observer_html_af0b1293a9cf82a352441255fe0e461b9"><div class="ttname"><a href="classentt_1_1basic__observer.html#af0b1293a9cf82a352441255fe0e461b9">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_af22100cd6a23b5853a26bb783169cdce"><div class="ttname"><a href="classentt_1_1basic__observer.html#af22100cd6a23b5853a26bb783169cdce">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#l00270">observer.hpp:270</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__sparse__set_html_a4c540ff32bca204b1adbd9e4f4a0240b"><div class="ttname"><a href="classentt_1_1basic__sparse__set.html#a4c540ff32bca204b1adbd9e4f4a0240b">entt::basic_sparse_set< Entity, std::allocator_traits< Allocator >::template rebind_alloc< Entity > >::data</a></div><div class="ttdeci">pointer data() const noexcept</div><div class="ttdoc">Direct access to the internal packed array.</div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00534">sparse_set.hpp:534</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__sparse__set_html_a6560773b887906122d50a413aea1faad"><div class="ttname"><a href="classentt_1_1basic__sparse__set.html#a6560773b887906122d50a413aea1faad">entt::basic_sparse_set< Entity, std::allocator_traits< Allocator >::template rebind_alloc< Entity > >::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Clears a sparse set.</div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00968">sparse_set.hpp:968</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__sparse__set_html_a69ad0662838fd351985a51ee3017fb6c"><div class="ttname"><a href="classentt_1_1basic__sparse__set.html#a69ad0662838fd351985a51ee3017fb6c">entt::basic_sparse_set< Entity, std::allocator_traits< Allocator >::template rebind_alloc< Entity > >::size</a></div><div class="ttdeci">size_type size() const noexcept</div><div class="ttdoc">Returns the number of elements in a sparse set.</div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00510">sparse_set.hpp:510</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__sparse__set_html_ad8936d80c3656449118a7a7a08be6258"><div class="ttname"><a href="classentt_1_1basic__sparse__set.html#ad8936d80c3656449118a7a7a08be6258">entt::basic_sparse_set< Entity, std::allocator_traits< Allocator >::template rebind_alloc< Entity > >::empty</a></div><div class="ttdeci">bool empty() const noexcept</div><div class="ttdoc">Checks whether a sparse set is empty.</div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00518">sparse_set.hpp:518</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</a></div><div class="ttdoc">Basic storage implementation.</div><div class="ttdef"><b>Definition:</b> <a href="storage_8hpp_source.html#l00236">storage.hpp:236</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__storage_html_a28c6c2fb6e1c840a014656568249efc1"><div class="ttname"><a href="classentt_1_1basic__storage.html#a28c6c2fb6e1c840a014656568249efc1">entt::basic_storage::end</a></div><div class="ttdeci">const_iterator end() const noexcept</div><div class="ttdoc">Returns an iterator to the end.</div><div class="ttdef"><b>Definition:</b> <a href="storage_8hpp_source.html#l00576">storage.hpp:576</a></div></div>
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<div class="ttc" id="aclassentt_1_1basic__storage_html_a826c6603fc4f3ed07b2453ff477f1fee"><div class="ttname"><a href="classentt_1_1basic__storage.html#a826c6603fc4f3ed07b2453ff477f1fee">entt::basic_storage::begin</a></div><div class="ttdeci">const_iterator begin() const noexcept</div><div class="ttdoc">Returns an iterator to the beginning.</div><div class="ttdef"><b>Definition:</b> <a href="storage_8hpp_source.html#l00556">storage.hpp:556</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#l00059">delegate.hpp:59</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="dense__map_8hpp_source.html#l00021">dense_map.hpp:21</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#l00013">fwd.hpp:13</a></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#l00109">observer.hpp:109</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#l00091">observer.hpp:91</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_a84a5b944f463c1b1e1907a2906793b54"><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#a84a5b944f463c1b1e1907a2906793b54">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... >=exclude_t{}) 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#l00081">observer.hpp:81</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_add41fb03c0e129a63e616501cc2e1ea4"><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#add41fb03c0e129a63e616501cc2e1ea4">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... >=exclude_t{}) 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#l00102">observer.hpp:102</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#l00038">observer.hpp:38</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#l00056">observer.hpp:56</a></div></div>
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<div class="ttc" id="astructentt_1_1basic__collector_3_4_html_a718ff87ec2db7fa4332b2b3d47a7998f"><div class="ttname"><a href="structentt_1_1basic__collector_3_4.html#a718ff87ec2db7fa4332b2b3d47a7998f">entt::basic_collector<>::group</a></div><div class="ttdeci">static constexpr auto group(exclude_t< NoneOf... >=exclude_t{}) 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#l00046">observer.hpp:46</a></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#l00027">observer.hpp:27</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_2fwd_8hpp_source.html#l00105">fwd.hpp:105</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#l00018">observer.hpp:18</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#l00110">type_traits.hpp:110</a></div></div>
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