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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">sparse_set.hpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef ENTT_ENTITY_SPARSE_SET_HPP</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define ENTT_ENTITY_SPARSE_SET_HPP</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> </div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include <algorithm></span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include <iterator></span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include <utility></span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <cstddef></span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <numeric></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "../config/config.h"</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "../core/algorithm.hpp"</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "entity.hpp"</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "fwd.hpp"</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">namespace </span><a class="code" href="namespaceentt.html">entt</a> {</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">template</span><<span class="keyword">typename</span> Entity></div><div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html"> 50</a></span> <span class="keyword">class </span><a class="code" href="classentt_1_1sparse__set.html">sparse_set</a> {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">using</span> <a class="code" href="structentt_1_1entt__traits.html">traits_type</a> = <a class="code" href="structentt_1_1entt__traits.html">entt_traits<std::underlying_type_t<Entity></a>>;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  static_assert(ENTT_PAGE_SIZE && ((ENTT_PAGE_SIZE & (ENTT_PAGE_SIZE - 1)) == 0));</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">static</span> constexpr <span class="keyword">auto</span> entt_per_page = ENTT_PAGE_SIZE / <span class="keyword">sizeof</span>(<span class="keyword">typename</span> traits_type::entity_type);</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">class </span>iterator {</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classentt_1_1sparse__set.html">sparse_set</a><Entity>;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">using</span> direct_type = <span class="keyword">const</span> std::vector<Entity>;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">using</span> index_type = <span class="keyword">typename</span> traits_type::difference_type;</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  iterator(direct_type *ref, <span class="keyword">const</span> index_type idx) ENTT_NOEXCEPT</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  : direct{ref}, <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>{idx}</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {}</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">using</span> difference_type = index_type;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">using</span> value_type = Entity;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">using</span> pointer = <span class="keyword">const</span> value_type *;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">using</span> reference = <span class="keyword">const</span> value_type &;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">using</span> iterator_category = std::random_access_iterator_tag;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  iterator() ENTT_NOEXCEPT = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  iterator & operator++() ENTT_NOEXCEPT {</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> --<a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>, *<span class="keyword">this</span>;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  iterator operator++(<span class="keywordtype">int</span>) ENTT_NOEXCEPT {</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  iterator orig = *<span class="keyword">this</span>;</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">return</span> ++(*this), orig;</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  iterator & operator--() ENTT_NOEXCEPT {</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> ++<a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>, *<span class="keyword">this</span>;</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  }</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  iterator operator--(<span class="keywordtype">int</span>) ENTT_NOEXCEPT {</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  iterator orig = *<span class="keyword">this</span>;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> --(*this), orig;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  iterator & operator+=(<span class="keyword">const</span> difference_type value) ENTT_NOEXCEPT {</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a> -= value;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  }</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  iterator operator+(<span class="keyword">const</span> difference_type value) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> iterator{direct, <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>-value};</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  iterator & operator-=(<span class="keyword">const</span> difference_type value) ENTT_NOEXCEPT {</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">return</span> (*<span class="keyword">this</span> += -value);</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  iterator operator-(<span class="keyword">const</span> difference_type value) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> (*<span class="keyword">this</span> + -value);</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  difference_type operator-(<span class="keyword">const</span> iterator &other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> other.index - <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>;</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  reference operator[](<span class="keyword">const</span> difference_type value) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">const</span> <span class="keyword">auto</span> pos = <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a>(<a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>-value-1);</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">return</span> (*direct)[pos];</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> iterator &other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> other.index == <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordtype">bool</span> <a class="code" href="namespaceentt.html#a1a211752d12273a08015c524133e27c3">operator!=</a>(<span class="keyword">const</span> iterator &other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span> !(*<span class="keyword">this</span> == other);</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  }</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordtype">bool</span> operator<(<span class="keyword">const</span> iterator &other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a> > other.index;</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  }</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordtype">bool</span> operator>(<span class="keyword">const</span> iterator &other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a> < other.index;</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  }</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordtype">bool</span> operator<=(<span class="keyword">const</span> iterator &other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">return</span> !(*<span class="keyword">this</span> > other);</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordtype">bool</span> operator>=(<span class="keyword">const</span> iterator &other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">return</span> !(*<span class="keyword">this</span> < other);</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  }</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  pointer operator->() <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keyword">const</span> <span class="keyword">auto</span> pos = <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a>(<a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>-1);</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">return</span> &(*direct)[pos];</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  }</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  reference operator*() <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">return</span> *operator->();</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  direct_type *direct;</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  index_type <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>;</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  };</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordtype">void</span> assure(<span class="keyword">const</span> std::size_t page) {</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span>(!(page < reverse.size())) {</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  reverse.resize(page+1);</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">if</span>(!reverse[page]) {</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  reverse[page] = std::make_unique<entity_type[]>(entt_per_page);</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">// null is safe in all cases for our purposes</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  std::fill_n(reverse[page].<span class="keyword">get</span>(), entt_per_page, <a class="code" href="namespaceentt.html#a588326af8f6f902a6c0b57d3f9fc6c17">null</a>);</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  }</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keyword">auto</span> map(<span class="keyword">const</span> Entity <a class="code" href="namespaceentt.html">entt</a>) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">const</span> <span class="keyword">auto</span> <a class="code" href="classentt_1_1identifier.html">identifier</a> = to_integer(entt) & traits_type::entity_mask;</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">const</span> <span class="keyword">auto</span> page = <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a>(<a class="code" href="classentt_1_1identifier.html">identifier</a> / entt_per_page);</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keyword">const</span> <span class="keyword">auto</span> offset = <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a>(<a class="code" href="classentt_1_1identifier.html">identifier</a> & (entt_per_page - 1));</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">return</span> std::make_pair(page, offset);</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  }</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00178"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780"> 178</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a> = Entity;</div><div class="line"><a name="l00180"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1"> 180</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a> = std::size_t;</div><div class="line"><a name="l00182"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469"> 182</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">iterator_type</a> = iterator;</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <a class="code" href="classentt_1_1sparse__set.html#a8ef544aaed30126797f6f0b9a9f8b9e8">sparse_set</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div><div class="line"><a name="l00191"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#af684a44e129f3aafd311814b5972378f"> 191</a></span>  <a class="code" href="classentt_1_1sparse__set.html#af684a44e129f3aafd311814b5972378f">sparse_set</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html">sparse_set</a> &other)</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  : reverse{},</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  direct{other.direct}</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  {</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">for</span>(<a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a> pos{}, last = other.reverse.size(); pos < last; ++pos) {</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">if</span>(other.reverse[pos]) {</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  assure(pos);</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  std::copy_n(other.reverse[pos].get(), entt_per_page, reverse[pos].get());</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <a class="code" href="classentt_1_1sparse__set.html#a8ef544aaed30126797f6f0b9a9f8b9e8">sparse_set</a>(<a class="code" href="classentt_1_1sparse__set.html">sparse_set</a> &&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keyword">virtual</span> <a class="code" href="classentt_1_1sparse__set.html#a74c49e0d205b6240bf14ac3003cfcbd1">~sparse_set</a>() ENTT_NOEXCEPT = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span> </div><div class="line"><a name="l00214"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a32a00ca96cc7e78089fb7120d144de34"> 214</a></span>  <a class="code" href="classentt_1_1sparse__set.html">sparse_set</a> & <a class="code" href="classentt_1_1sparse__set.html#a32a00ca96cc7e78089fb7120d144de34">operator=</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html">sparse_set</a> &other) {</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">if</span>(&other != <span class="keyword">this</span>) {</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keyword">auto</span> tmp{other};</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  *<span class="keyword">this</span> = std::move(tmp);</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  }</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  }</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <a class="code" href="classentt_1_1sparse__set.html">sparse_set</a> & <a class="code" href="classentt_1_1sparse__set.html#a32a00ca96cc7e78089fb7120d144de34">operator=</a>(<a class="code" href="classentt_1_1sparse__set.html">sparse_set</a> &&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div><div class="line"><a name="l00234"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a8b4b9dd989877bc333fdc455fcd068d7"> 234</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1sparse__set.html#a8b4b9dd989877bc333fdc455fcd068d7">reserve</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a> cap) {</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  direct.reserve(cap);</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  }</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div><div class="line"><a name="l00243"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a30267005e552fce0d2a9b4e4d70d6656"> 243</a></span>  <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a> <a class="code" href="classentt_1_1sparse__set.html#a30267005e552fce0d2a9b4e4d70d6656">capacity</a>() const ENTT_NOEXCEPT {</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">return</span> direct.capacity();</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  }</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div><div class="line"><a name="l00248"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a75f5d70148a149e4cbc485c7a7b00dda"> 248</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1sparse__set.html#a75f5d70148a149e4cbc485c7a7b00dda">shrink_to_fit</a>() {</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">// conservative approach</span></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">if</span>(direct.empty()) {</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  reverse.clear();</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  }</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  reverse.shrink_to_fit();</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  direct.shrink_to_fit();</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  }</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div><div class="line"><a name="l00268"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#af79345df59154e5ea9e58b7efa7ff8f0"> 268</a></span>  <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a> <a class="code" href="classentt_1_1sparse__set.html#af79345df59154e5ea9e58b7efa7ff8f0">extent</a>() const ENTT_NOEXCEPT {</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keywordflow">return</span> reverse.size() * entt_per_page;</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  }</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div><div class="line"><a name="l00282"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a340dff7484f1e58feff58a5f0627e190"> 282</a></span>  <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a> <a class="code" href="classentt_1_1sparse__set.html#a340dff7484f1e58feff58a5f0627e190">size</a>() const ENTT_NOEXCEPT {</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordflow">return</span> direct.size();</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  }</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span> </div><div class="line"><a name="l00290"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#ae1a16cb354a9ed5ded92b6edcddce15e"> 290</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classentt_1_1sparse__set.html#ae1a16cb354a9ed5ded92b6edcddce15e">empty</a>() const ENTT_NOEXCEPT {</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">return</span> direct.empty();</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  }</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span> </div><div class="line"><a name="l00309"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a2eafe4975271769b08fe7f7d4924992f"> 309</a></span>  <span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a> * <a class="code" href="classentt_1_1sparse__set.html#a2eafe4975271769b08fe7f7d4924992f">data</a>() const ENTT_NOEXCEPT {</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">return</span> direct.data();</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  }</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div><div class="line"><a name="l00326"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a06743336f265989b48e106a3d3bd1562"> 326</a></span>  <a class="code" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">iterator_type</a> <a class="code" href="classentt_1_1sparse__set.html#a06743336f265989b48e106a3d3bd1562">begin</a>() const ENTT_NOEXCEPT {</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keyword">const</span> <span class="keyword">typename</span> traits_type::difference_type pos = direct.size();</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">iterator_type</a>{&direct, pos};</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  }</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span> </div><div class="line"><a name="l00345"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75"> 345</a></span>  <a class="code" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">iterator_type</a> <a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a>() const ENTT_NOEXCEPT {</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">iterator_type</a>{&direct, {}};</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  }</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span> </div><div class="line"><a name="l00355"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a0ed57521bb3279b5ed3cd397b65abf01"> 355</a></span>  <a class="code" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">iterator_type</a> <a class="code" href="classentt_1_1sparse__set.html#a0ed57521bb3279b5ed3cd397b65abf01">find</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a> entt) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1sparse__set.html#af4eb4faf1aa28d20717716bea7981f5b">has</a>(entt) ? --(<a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a>() - <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>(entt)) : <a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a>();</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  }</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span> </div><div class="line"><a name="l00364"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#af4eb4faf1aa28d20717716bea7981f5b"> 364</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classentt_1_1sparse__set.html#af4eb4faf1aa28d20717716bea7981f5b">has</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a> entt) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keyword">auto</span> [page, offset] = map(entt);</div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="comment">// testing against null permits to avoid accessing the direct vector</span></div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordflow">return</span> (page < reverse.size() && reverse[page] && reverse[page][offset] != <a class="code" href="namespaceentt.html#a588326af8f6f902a6c0b57d3f9fc6c17">null</a>);</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  }</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span> </div><div class="line"><a name="l00382"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2"> 382</a></span>  <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a> <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a> entt) <span class="keyword">const</span> ENTT_NOEXCEPT {</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  ENTT_ASSERT(<a class="code" href="classentt_1_1sparse__set.html#af4eb4faf1aa28d20717716bea7981f5b">has</a>(entt));</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keyword">auto</span> [page, offset] = map(entt);</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordflow">return</span> <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a>(reverse[page][offset]);</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  }</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span> </div><div class="line"><a name="l00399"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a4f6d293b9bc7227de22c86722881083f"> 399</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1sparse__set.html#a4f6d293b9bc7227de22c86722881083f">construct</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a> entt) {</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  ENTT_ASSERT(!<a class="code" href="classentt_1_1sparse__set.html#af4eb4faf1aa28d20717716bea7981f5b">has</a>(entt));</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="keyword">auto</span> [page, offset] = map(entt);</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  assure(page);</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  reverse[page][offset] = <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a>(direct.size());</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  direct.push_back(entt);</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  }</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span> </div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keyword">template</span><<span class="keyword">typename</span> It></div><div class="line"><a name="l00421"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a642460f7f0ca8e42220c43c785467063"> 421</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1sparse__set.html#a642460f7f0ca8e42220c43c785467063">batch</a>(It first, It last) {</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  std::for_each(first, last, [<span class="keyword">this</span>, next = direct.size()](<span class="keyword">const</span> <span class="keyword">auto</span> entt) <span class="keyword">mutable</span> {</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  ENTT_ASSERT(!<a class="code" href="classentt_1_1sparse__set.html#af4eb4faf1aa28d20717716bea7981f5b">has</a>(entt));</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="keyword">auto</span> [page, offset] = map(entt);</div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  assure(page);</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  reverse[page][offset] = <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a>(next++);</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  });</div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span> </div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  direct.insert(direct.end(), first, last);</div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  }</div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span> </div><div class="line"><a name="l00443"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#ab69719626bee1add76096046db86a170"> 443</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1sparse__set.html#ab69719626bee1add76096046db86a170">destroy</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a> entt) {</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  ENTT_ASSERT(<a class="code" href="classentt_1_1sparse__set.html#af4eb4faf1aa28d20717716bea7981f5b">has</a>(entt));</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="keyword">auto</span> [from_page, from_offset] = map(entt);</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keyword">auto</span> [to_page, to_offset] = map(direct.back());</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  direct[<a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a>(reverse[from_page][from_offset])] = <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a>(direct.back());</div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  reverse[to_page][to_offset] = reverse[from_page][from_offset];</div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  reverse[from_page][from_offset] = <a class="code" href="namespaceentt.html#a588326af8f6f902a6c0b57d3f9fc6c17">null</a>;</div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  direct.pop_back();</div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  }</div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span> </div><div class="line"><a name="l00468"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a5ef14da059528647a5d72f2e2ce0d762"> 468</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1sparse__set.html#a5ef14da059528647a5d72f2e2ce0d762">swap</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a> lhs, <span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a> rhs) ENTT_NOEXCEPT {</div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keyword">auto</span> [src_page, src_offset] = map(lhs);</div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="keyword">auto</span> [dst_page, dst_offset] = map(rhs);</div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="keyword">auto</span> &from = reverse[src_page][src_offset];</div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keyword">auto</span> &to = reverse[dst_page][dst_offset];</div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  std::swap(direct[<a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a>(from)], direct[<a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a>(to)]);</div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  std::swap(from, to);</div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  }</div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span> </div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Compare, <span class="keyword">typename</span> Sort = <a class="code" href="structentt_1_1std__sort.html">std_sort</a>, <span class="keyword">typename</span>... Args></div><div class="line"><a name="l00517"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#afae939a408911c573256cf0299d76828"> 517</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1sparse__set.html#afae939a408911c573256cf0299d76828">sort</a>(<a class="code" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">iterator_type</a> first, <a class="code" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">iterator_type</a> last, Compare compare, Sort algo = Sort{}, Args &&... args) {</div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  ENTT_ASSERT(!(last < first));</div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  ENTT_ASSERT(!(last > <a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a>()));</div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span> </div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keyword">const</span> <span class="keyword">auto</span> length = std::distance(first, last);</div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <span class="keyword">const</span> <span class="keyword">auto</span> skip = std::distance(last, <a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a>());</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="keyword">const</span> <span class="keyword">auto</span> to = direct.rend() - skip;</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="keyword">const</span> <span class="keyword">auto</span> from = to - length;</div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span> </div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  algo(from, to, std::move(compare), std::forward<Args>(args)...);</div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span> </div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <span class="keywordflow">for</span>(<a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a> pos = skip, <a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a> = skip+length; pos < <a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a>; ++pos) {</div><div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="keyword">auto</span> [page, offset] = map(direct[pos]);</div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  reverse[page][offset] = <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a>(pos);</div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  }</div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  }</div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span> </div><div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Apply, <span class="keyword">typename</span> Compare, <span class="keyword">typename</span> Sort = <a class="code" href="structentt_1_1std__sort.html">std_sort</a>, <span class="keyword">typename</span>... Args></div><div class="line"><a name="l00562"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#a28b36afb6ae6f91d995ff259184d6515"> 562</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1sparse__set.html#a28b36afb6ae6f91d995ff259184d6515">arrange</a>(<a class="code" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">iterator_type</a> first, <a class="code" href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">iterator_type</a> last, Apply apply, Compare compare, Sort algo = Sort{}, Args &&... args) {</div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  ENTT_ASSERT(!(last < first));</div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  ENTT_ASSERT(!(last > <a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a>()));</div><div class="line"><a name="l00565"></a><span class="lineno"> 565</span> </div><div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <span class="keyword">const</span> <span class="keyword">auto</span> length = std::distance(first, last);</div><div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <span class="keyword">const</span> <span class="keyword">auto</span> skip = std::distance(last, <a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a>());</div><div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <span class="keyword">const</span> <span class="keyword">auto</span> to = direct.rend() - skip;</div><div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="keyword">const</span> <span class="keyword">auto</span> from = to - length;</div><div class="line"><a name="l00570"></a><span class="lineno"> 570</span> </div><div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  algo(from, to, std::move(compare), std::forward<Args>(args)...);</div><div class="line"><a name="l00572"></a><span class="lineno"> 572</span> </div><div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <span class="keywordflow">for</span>(<a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a> pos = skip, <a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a> = skip+length; pos < <a class="code" href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">end</a>; ++pos) {</div><div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <span class="keyword">auto</span> curr = pos;</div><div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <span class="keyword">auto</span> next = <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>(direct[curr]);</div><div class="line"><a name="l00576"></a><span class="lineno"> 576</span> </div><div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keywordflow">while</span>(curr != next) {</div><div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  apply(direct[curr], direct[next]);</div><div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  <span class="keyword">auto</span> [page, offset] = map(direct[curr]);</div><div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  reverse[page][offset] = <a class="code" href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entity_type</a>(curr);</div><div class="line"><a name="l00581"></a><span class="lineno"> 581</span> </div><div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  curr = next;</div><div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  next = <a class="code" href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">index</a>(direct[curr]);</div><div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  }</div><div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  }</div><div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  }</div><div class="line"><a name="l00587"></a><span class="lineno"> 587</span> </div><div class="line"><a name="l00608"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#ab0481dde89f07e9ca50d79777de898b6"> 608</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1sparse__set.html#ab0481dde89f07e9ca50d79777de898b6">respect</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1sparse__set.html">sparse_set</a> &other) ENTT_NOEXCEPT {</div><div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="keyword">const</span> <span class="keyword">auto</span> to = other.end();</div><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="keyword">auto</span> from = other.begin();</div><div class="line"><a name="l00611"></a><span class="lineno"> 611</span> </div><div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <a class="code" href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">size_type</a> pos = direct.size() - 1;</div><div class="line"><a name="l00613"></a><span class="lineno"> 613</span> </div><div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">while</span>(pos && from != to) {</div><div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keywordflow">if</span>(<a class="code" href="classentt_1_1sparse__set.html#af4eb4faf1aa28d20717716bea7981f5b">has</a>(*from)) {</div><div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="keywordflow">if</span>(*from != direct[pos]) {</div><div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <a class="code" href="classentt_1_1sparse__set.html#a5ef14da059528647a5d72f2e2ce0d762">swap</a>(direct[pos], *from);</div><div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  }</div><div class="line"><a name="l00619"></a><span class="lineno"> 619</span> </div><div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  --pos;</div><div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  }</div><div class="line"><a name="l00622"></a><span class="lineno"> 622</span> </div><div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  ++from;</div><div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  }</div><div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  }</div><div class="line"><a name="l00626"></a><span class="lineno"> 626</span> </div><div class="line"><a name="l00630"></a><span class="lineno"><a class="line" href="classentt_1_1sparse__set.html#abcf1b927ccc18fba0fef178d168c1fa7"> 630</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1sparse__set.html#abcf1b927ccc18fba0fef178d168c1fa7">reset</a>() {</div><div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  reverse.clear();</div><div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  direct.clear();</div><div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  }</div><div class="line"><a name="l00634"></a><span class="lineno"> 634</span> </div><div class="line"><a name="l00635"></a><span class="lineno"> 635</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  std::vector<std::unique_ptr<entity_type[]>> reverse;</div><div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  std::vector<entity_type> direct;</div><div class="line"><a name="l00638"></a><span class="lineno"> 638</span> };</div><div class="line"><a name="l00639"></a><span class="lineno"> 639</span> </div><div class="line"><a name="l00640"></a><span class="lineno"> 640</span> </div><div class="line"><a name="l00641"></a><span class="lineno"> 641</span> }</div><div class="line"><a name="l00642"></a><span class="lineno"> 642</span> </div><div class="line"><a name="l00643"></a><span class="lineno"> 643</span> </div><div class="line"><a name="l00644"></a><span class="lineno"> 644</span> <span class="preprocessor">#endif // ENTT_ENTITY_SPARSE_SET_HPP</span></div><div class="ttc" id="classentt_1_1sparse__set_html_a28b36afb6ae6f91d995ff259184d6515"><div class="ttname"><a href="classentt_1_1sparse__set.html#a28b36afb6ae6f91d995ff259184d6515">entt::sparse_set::arrange</a></div><div class="ttdeci">void arrange(iterator_type first, iterator_type last, Apply apply, Compare compare, Sort algo=Sort{}, Args &&... args)</div><div class="ttdoc">Sort elements according to the given comparison function. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00562">sparse_set.hpp:562</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a75f5d70148a149e4cbc485c7a7b00dda"><div class="ttname"><a href="classentt_1_1sparse__set.html#a75f5d70148a149e4cbc485c7a7b00dda">entt::sparse_set::shrink_to_fit</a></div><div class="ttdeci">void shrink_to_fit()</div><div class="ttdoc">Requests the removal of unused capacity. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00248">sparse_set.hpp:248</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html"><div class="ttname"><a href="classentt_1_1sparse__set.html">entt::sparse_set</a></div><div class="ttdoc">Basic sparse set implementation. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00050">sparse_set.hpp:50</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a32a00ca96cc7e78089fb7120d144de34"><div class="ttname"><a href="classentt_1_1sparse__set.html#a32a00ca96cc7e78089fb7120d144de34">entt::sparse_set::operator=</a></div><div class="ttdeci">sparse_set & operator=(const sparse_set &other)</div><div class="ttdoc">Copy assignment operator. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00214">sparse_set.hpp:214</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a8b4b9dd989877bc333fdc455fcd068d7"><div class="ttname"><a href="classentt_1_1sparse__set.html#a8b4b9dd989877bc333fdc455fcd068d7">entt::sparse_set::reserve</a></div><div class="ttdeci">void reserve(const size_type cap)</div><div class="ttdoc">Increases the capacity of a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00234">sparse_set.hpp:234</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_ab0481dde89f07e9ca50d79777de898b6"><div class="ttname"><a href="classentt_1_1sparse__set.html#ab0481dde89f07e9ca50d79777de898b6">entt::sparse_set::respect</a></div><div class="ttdeci">void respect(const sparse_set &other) ENTT_NOEXCEPT</div><div class="ttdoc">Sort entities according to their order in another sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00608">sparse_set.hpp:608</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_af684a44e129f3aafd311814b5972378f"><div class="ttname"><a href="classentt_1_1sparse__set.html#af684a44e129f3aafd311814b5972378f">entt::sparse_set::sparse_set</a></div><div class="ttdeci">sparse_set(const sparse_set &other)</div><div class="ttdoc">Copy constructor. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00191">sparse_set.hpp:191</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a340dff7484f1e58feff58a5f0627e190"><div class="ttname"><a href="classentt_1_1sparse__set.html#a340dff7484f1e58feff58a5f0627e190">entt::sparse_set::size</a></div><div class="ttdeci">size_type size() const ENTT_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#l00282">sparse_set.hpp:282</a></div></div>
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<div class="ttc" id="namespaceentt_html_a1a211752d12273a08015c524133e27c3"><div class="ttname"><a href="namespaceentt.html#a1a211752d12273a08015c524133e27c3">entt::operator!=</a></div><div class="ttdeci">constexpr bool operator!=(const basic_hashed_string< Char > &lhs, const basic_hashed_string< Char > &rhs) ENTT_NOEXCEPT</div><div class="ttdoc">Compares two hashed strings. </div><div class="ttdef"><b>Definition:</b> <a href="hashed__string_8hpp_source.html#l00217">hashed_string.hpp:217</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a642460f7f0ca8e42220c43c785467063"><div class="ttname"><a href="classentt_1_1sparse__set.html#a642460f7f0ca8e42220c43c785467063">entt::sparse_set::batch</a></div><div class="ttdeci">void batch(It first, It last)</div><div class="ttdoc">Assigns one or more entities to a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00421">sparse_set.hpp:421</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a2eafe4975271769b08fe7f7d4924992f"><div class="ttname"><a href="classentt_1_1sparse__set.html#a2eafe4975271769b08fe7f7d4924992f">entt::sparse_set::data</a></div><div class="ttdeci">const entity_type * data() const ENTT_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#l00309">sparse_set.hpp:309</a></div></div>
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<div class="ttc" id="namespaceentt_html"><div class="ttname"><a href="namespaceentt.html">entt</a></div><div class="ttdoc">EnTT default namespace. </div><div class="ttdef"><b>Definition:</b> <a href="algorithm_8hpp_source.html#l00012">algorithm.hpp:12</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_af4eb4faf1aa28d20717716bea7981f5b"><div class="ttname"><a href="classentt_1_1sparse__set.html#af4eb4faf1aa28d20717716bea7981f5b">entt::sparse_set::has</a></div><div class="ttdeci">bool has(const entity_type entt) const ENTT_NOEXCEPT</div><div class="ttdoc">Checks if a sparse set contains an entity. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00364">sparse_set.hpp:364</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a3d2138b0eb8c7ac968e9e38a9e981ec1"><div class="ttname"><a href="classentt_1_1sparse__set.html#a3d2138b0eb8c7ac968e9e38a9e981ec1">entt::sparse_set::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="sparse__set_8hpp_source.html#l00180">sparse_set.hpp:180</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_afbdea531952ca6857abdfddf7866b5a2"><div class="ttname"><a href="classentt_1_1sparse__set.html#afbdea531952ca6857abdfddf7866b5a2">entt::sparse_set::index</a></div><div class="ttdeci">size_type index(const entity_type entt) const ENTT_NOEXCEPT</div><div class="ttdoc">Returns the position of an entity in a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00382">sparse_set.hpp:382</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_ab69719626bee1add76096046db86a170"><div class="ttname"><a href="classentt_1_1sparse__set.html#ab69719626bee1add76096046db86a170">entt::sparse_set::destroy</a></div><div class="ttdeci">void destroy(const entity_type entt)</div><div class="ttdoc">Removes an entity from a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00443">sparse_set.hpp:443</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a06743336f265989b48e106a3d3bd1562"><div class="ttname"><a href="classentt_1_1sparse__set.html#a06743336f265989b48e106a3d3bd1562">entt::sparse_set::begin</a></div><div class="ttdeci">iterator_type begin() const ENTT_NOEXCEPT</div><div class="ttdoc">Returns an iterator to the beginning. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00326">sparse_set.hpp:326</a></div></div>
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<div class="ttc" id="namespaceentt_html_a588326af8f6f902a6c0b57d3f9fc6c17"><div class="ttname"><a href="namespaceentt.html#a588326af8f6f902a6c0b57d3f9fc6c17">entt::null</a></div><div class="ttdeci">constexpr auto null</div><div class="ttdoc">Compile-time constant for null entities. </div><div class="ttdef"><b>Definition:</b> <a href="entity_8hpp_source.html#l00168">entity.hpp:168</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a74c49e0d205b6240bf14ac3003cfcbd1"><div class="ttname"><a href="classentt_1_1sparse__set.html#a74c49e0d205b6240bf14ac3003cfcbd1">entt::sparse_set::~sparse_set</a></div><div class="ttdeci">virtual ~sparse_set() ENTT_NOEXCEPT=default</div><div class="ttdoc">Default destructor. </div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_af79345df59154e5ea9e58b7efa7ff8f0"><div class="ttname"><a href="classentt_1_1sparse__set.html#af79345df59154e5ea9e58b7efa7ff8f0">entt::sparse_set::extent</a></div><div class="ttdeci">size_type extent() const ENTT_NOEXCEPT</div><div class="ttdoc">Returns the extent of a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00268">sparse_set.hpp:268</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_afae939a408911c573256cf0299d76828"><div class="ttname"><a href="classentt_1_1sparse__set.html#afae939a408911c573256cf0299d76828">entt::sparse_set::sort</a></div><div class="ttdeci">void sort(iterator_type first, iterator_type last, Compare compare, Sort algo=Sort{}, Args &&... args)</div><div class="ttdoc">Sort elements according to the given comparison function. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00517">sparse_set.hpp:517</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a30267005e552fce0d2a9b4e4d70d6656"><div class="ttname"><a href="classentt_1_1sparse__set.html#a30267005e552fce0d2a9b4e4d70d6656">entt::sparse_set::capacity</a></div><div class="ttdeci">size_type capacity() const ENTT_NOEXCEPT</div><div class="ttdoc">Returns the number of elements that a sparse set has currently allocated space for. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00243">sparse_set.hpp:243</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a9a1dbe5ab2dbb098beae0bff56bbf780"><div class="ttname"><a href="classentt_1_1sparse__set.html#a9a1dbe5ab2dbb098beae0bff56bbf780">entt::sparse_set< entity_type >::entity_type</a></div><div class="ttdeci">entity_type entity_type</div><div class="ttdoc">Underlying entity identifier. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00178">sparse_set.hpp:178</a></div></div>
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<div class="ttc" id="classentt_1_1identifier_html"><div class="ttname"><a href="classentt_1_1identifier.html">entt::identifier</a></div><div class="ttdoc">Types identifiers. </div><div class="ttdef"><b>Definition:</b> <a href="ident_8hpp_source.html#l00042">ident.hpp:42</a></div></div>
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<div class="ttc" id="structentt_1_1std__sort_html"><div class="ttname"><a href="structentt_1_1std__sort.html">entt::std_sort</a></div><div class="ttdoc">Function object to wrap std::sort in a class type. </div><div class="ttdef"><b>Definition:</b> <a href="algorithm_8hpp_source.html#l00023">algorithm.hpp:23</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a5ef14da059528647a5d72f2e2ce0d762"><div class="ttname"><a href="classentt_1_1sparse__set.html#a5ef14da059528647a5d72f2e2ce0d762">entt::sparse_set::swap</a></div><div class="ttdeci">virtual void swap(const entity_type lhs, const entity_type rhs) ENTT_NOEXCEPT</div><div class="ttdoc">Swaps two entities in the internal packed array. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00468">sparse_set.hpp:468</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_ae1a16cb354a9ed5ded92b6edcddce15e"><div class="ttname"><a href="classentt_1_1sparse__set.html#ae1a16cb354a9ed5ded92b6edcddce15e">entt::sparse_set::empty</a></div><div class="ttdeci">bool empty() const ENTT_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#l00290">sparse_set.hpp:290</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a8ef544aaed30126797f6f0b9a9f8b9e8"><div class="ttname"><a href="classentt_1_1sparse__set.html#a8ef544aaed30126797f6f0b9a9f8b9e8">entt::sparse_set::sparse_set</a></div><div class="ttdeci">sparse_set()=default</div><div class="ttdoc">Default constructor. </div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a69d6c1288f673c6f92d2b1b028d6aa75"><div class="ttname"><a href="classentt_1_1sparse__set.html#a69d6c1288f673c6f92d2b1b028d6aa75">entt::sparse_set::end</a></div><div class="ttdeci">iterator_type end() const ENTT_NOEXCEPT</div><div class="ttdoc">Returns an iterator to the end. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00345">sparse_set.hpp:345</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_abcf1b927ccc18fba0fef178d168c1fa7"><div class="ttname"><a href="classentt_1_1sparse__set.html#abcf1b927ccc18fba0fef178d168c1fa7">entt::sparse_set::reset</a></div><div class="ttdeci">void reset()</div><div class="ttdoc">Resets a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00630">sparse_set.hpp:630</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a0ed57521bb3279b5ed3cd397b65abf01"><div class="ttname"><a href="classentt_1_1sparse__set.html#a0ed57521bb3279b5ed3cd397b65abf01">entt::sparse_set::find</a></div><div class="ttdeci">iterator_type find(const entity_type entt) const ENTT_NOEXCEPT</div><div class="ttdoc">Finds an entity. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00355">sparse_set.hpp:355</a></div></div>
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<div class="ttc" id="structentt_1_1entt__traits_html"><div class="ttname"><a href="structentt_1_1entt__traits.html">entt::entt_traits</a></div><div class="ttdoc">Entity traits. </div><div class="ttdef"><b>Definition:</b> <a href="entity_8hpp_source.html#l00020">entity.hpp:20</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a580b210d5a24c49ca8c255646f3bb469"><div class="ttname"><a href="classentt_1_1sparse__set.html#a580b210d5a24c49ca8c255646f3bb469">entt::sparse_set< entity_type >::iterator_type</a></div><div class="ttdeci">iterator iterator_type</div><div class="ttdoc">Random access iterator type. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00182">sparse_set.hpp:182</a></div></div>
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<div class="ttc" id="classentt_1_1sparse__set_html_a4f6d293b9bc7227de22c86722881083f"><div class="ttname"><a href="classentt_1_1sparse__set.html#a4f6d293b9bc7227de22c86722881083f">entt::sparse_set::construct</a></div><div class="ttdeci">void construct(const entity_type entt)</div><div class="ttdoc">Assigns an entity to a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00399">sparse_set.hpp:399</a></div></div>
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