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<div class="headertitle"><div class="title">memory.hpp</div></div>
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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_CORE_MEMORY_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_CORE_MEMORY_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 <memory></span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include <tuple></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 "../config/config.h"</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</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="l00012" name="l00012"></a><span class="lineno"> 12</span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keyword">template</span><<span class="keyword">typename</span> Type></div>
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<div class="foldopen" id="foldopen00020" data-start="{" data-end="}">
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"><a class="line" href="namespaceentt.html#af0ecb90b45a53e3272d761c237a0d850"> 20</a></span>[[nodiscard]] <span class="keyword">constexpr</span> <span class="keyword">auto</span> <a class="code hl_function" href="namespaceentt.html#af0ecb90b45a53e3272d761c237a0d850">to_address</a>(Type &&ptr) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <span class="keywordflow">if</span> <span class="keyword">constexpr</span>(std::is_pointer_v<std::decay_t<Type>>) {</div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <span class="keywordflow">return</span> ptr;</div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceentt.html#af0ecb90b45a53e3272d761c237a0d850">to_address</a>(std::forward<Type>(ptr).operator->());</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> }</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span>}</div>
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</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="keyword">template</span><<span class="keyword">typename</span> Allocator></div>
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<div class="foldopen" id="foldopen00035" data-start="{" data-end="}">
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"><a class="line" href="namespaceentt.html#ae934980252d1f2ce8f2473c8d74347df"> 35</a></span><span class="keyword">constexpr</span> <span class="keywordtype">void</span> <a class="code hl_function" href="namespaceentt.html#ae934980252d1f2ce8f2473c8d74347df">propagate_on_container_copy_assignment</a>([[maybe_unused]] Allocator &lhs, [[maybe_unused]] Allocator &rhs) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordflow">if</span> <span class="keyword">constexpr</span>(std::allocator_traits<Allocator>::propagate_on_container_copy_assignment::value) {</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> lhs = rhs;</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> }</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span>}</div>
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</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span><span class="keyword">template</span><<span class="keyword">typename</span> Allocator></div>
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<div class="foldopen" id="foldopen00048" data-start="{" data-end="}">
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"><a class="line" href="namespaceentt.html#a46cd263b358a2d495d4f4ee27d4537d7"> 48</a></span><span class="keyword">constexpr</span> <span class="keywordtype">void</span> <a class="code hl_function" href="namespaceentt.html#a46cd263b358a2d495d4f4ee27d4537d7">propagate_on_container_move_assignment</a>([[maybe_unused]] Allocator &lhs, [[maybe_unused]] Allocator &rhs) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keywordflow">if</span> <span class="keyword">constexpr</span>(std::allocator_traits<Allocator>::propagate_on_container_move_assignment::value) {</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> lhs = std::move(rhs);</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> }</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>}</div>
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</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span></div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="keyword">template</span><<span class="keyword">typename</span> Allocator></div>
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<div class="foldopen" id="foldopen00061" data-start="{" data-end="}">
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"><a class="line" href="namespaceentt.html#a0dd7ed3d3f11933cd542d8f4646cd695"> 61</a></span><span class="keyword">constexpr</span> <span class="keywordtype">void</span> <a class="code hl_function" href="namespaceentt.html#a0dd7ed3d3f11933cd542d8f4646cd695">propagate_on_container_swap</a>([[maybe_unused]] Allocator &lhs, [[maybe_unused]] Allocator &rhs) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keywordflow">if</span> <span class="keyword">constexpr</span>(std::allocator_traits<Allocator>::propagate_on_container_swap::value) {</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keyword">using </span>std::swap;</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <a class="code hl_function" href="namespaceentt.html#a2e05563b8d3e3b61cf9b06e9e0904cc7">swap</a>(lhs, rhs);</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> ENTT_ASSERT_CONSTEXPR(lhs == rhs, <span class="stringliteral">"Cannot swap the containers"</span>);</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> }</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span>}</div>
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</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span></div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="keyword">template</span><<span class="keyword">typename</span> Allocator></div>
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<div class="foldopen" id="foldopen00075" data-start="{" data-end="};">
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"><a class="line" href="structentt_1_1allocation__deleter.html"> 75</a></span><span class="keyword">struct </span><a class="code hl_function" href="structentt_1_1allocation__deleter.html#a5adbf1ba5d47a86d0b67d2c565fed220">allocation_deleter</a>: <span class="keyword">private</span> Allocator {</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"><a class="line" href="structentt_1_1allocation__deleter.html#abce9d9de78a31b79e98745f4e029c863"> 77</a></span> <span class="keyword">using </span><a class="code hl_typedef" href="structentt_1_1allocation__deleter.html#abce9d9de78a31b79e98745f4e029c863">allocator_type</a> = Allocator;</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"><a class="line" href="structentt_1_1allocation__deleter.html#a37186f63eb16409b00b0261041b68c5c"> 79</a></span> <span class="keyword">using </span><a class="code hl_typedef" href="structentt_1_1allocation__deleter.html#a37186f63eb16409b00b0261041b68c5c">pointer</a> = <span class="keyword">typename</span> std::allocator_traits<Allocator>::pointer;</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span></div>
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<div class="foldopen" id="foldopen00085" data-start="{" data-end="}">
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"><a class="line" href="structentt_1_1allocation__deleter.html#a5adbf1ba5d47a86d0b67d2c565fed220"> 85</a></span> <span class="keyword">constexpr</span> <a class="code hl_function" href="structentt_1_1allocation__deleter.html#a5adbf1ba5d47a86d0b67d2c565fed220">allocation_deleter</a>(<span class="keyword">const</span> <a class="code hl_typedef" href="structentt_1_1allocation__deleter.html#abce9d9de78a31b79e98745f4e029c863">allocator_type</a> &alloc) <span class="keyword">noexcept</span>(std::is_nothrow_copy_constructible_v<allocator_type>)</div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> : Allocator{alloc} {}</div>
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</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span></div>
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<div class="foldopen" id="foldopen00092" data-start="{" data-end="}">
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"><a class="line" href="structentt_1_1allocation__deleter.html#aaeea55e9539671ec5d6b1660f25e57d3"> 92</a></span> <span class="keyword">constexpr</span> <span class="keywordtype">void</span> <a class="code hl_function" href="structentt_1_1allocation__deleter.html#aaeea55e9539671ec5d6b1660f25e57d3">operator()</a>(<a class="code hl_typedef" href="structentt_1_1allocation__deleter.html#a37186f63eb16409b00b0261041b68c5c">pointer</a> ptr) <span class="keyword">noexcept</span>(std::is_nothrow_destructible_v<typename allocator_type::value_type>) {</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keyword">using </span>alloc_traits = std::allocator_traits<Allocator>;</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> alloc_traits::destroy(*<span class="keyword">this</span>, <a class="code hl_function" href="namespaceentt.html#af0ecb90b45a53e3272d761c237a0d850">to_address</a>(ptr));</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> alloc_traits::deallocate(*<span class="keyword">this</span>, ptr, 1u);</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> }</div>
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</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span>};</div>
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</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span></div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span><span class="keyword">template</span><<span class="keyword">typename</span> Type, <span class="keyword">typename</span> Allocator, <span class="keyword">typename</span>... Args></div>
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<div class="foldopen" id="foldopen00109" data-start="{" data-end="}">
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"><a class="line" href="namespaceentt.html#ae3729f1b7699d013f982b2de2ec781f9"> 109</a></span>ENTT_CONSTEXPR <span class="keyword">auto</span> <a class="code hl_function" href="namespaceentt.html#ae3729f1b7699d013f982b2de2ec781f9">allocate_unique</a>(Allocator &allocator, Args &&...args) {</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">static_assert</span>(!std::is_array_v<Type>, <span class="stringliteral">"Array types are not supported"</span>);</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="keyword">using </span>alloc_traits = <span class="keyword">typename</span> std::allocator_traits<Allocator>::template rebind_traits<Type>;</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <span class="keyword">using </span>allocator_type = <span class="keyword">typename</span> alloc_traits::allocator_type;</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> allocator_type alloc{allocator};</div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keyword">auto</span> ptr = alloc_traits::allocate(alloc, 1u);</div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> </div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> ENTT_TRY {</div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> alloc_traits::construct(alloc, <a class="code hl_function" href="namespaceentt.html#af0ecb90b45a53e3272d761c237a0d850">to_address</a>(ptr), std::forward<Args>(args)...);</div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> }</div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> ENTT_CATCH {</div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> alloc_traits::deallocate(alloc, ptr, 1u);</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> ENTT_THROW;</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> }</div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> </div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <span class="keywordflow">return</span> std::unique_ptr<Type, allocation_deleter<allocator_type>>{ptr, alloc};</div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span>}</div>
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</div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span></div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span><span class="keyword">namespace </span>internal {</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> </div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span><span class="keyword">template</span><<span class="keyword">typename</span> Type></div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span><span class="keyword">struct </span>uses_allocator_construction {</div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="keyword">template</span><<span class="keyword">typename</span> Allocator, <span class="keyword">typename</span>... Params></div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> args([[maybe_unused]] <span class="keyword">const</span> Allocator &allocator, Params &&...params) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keywordflow">if</span> <span class="keyword">constexpr</span>(!std::uses_allocator_v<Type, Allocator> && std::is_constructible_v<Type, Params...>) {</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keywordflow">return</span> std::forward_as_tuple(std::forward<Params>(params)...);</div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="keyword">static_assert</span>(std::uses_allocator_v<Type, Allocator>, <span class="stringliteral">"Ill-formed request"</span>);</div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> </div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keywordflow">if</span> <span class="keyword">constexpr</span>(std::is_constructible_v<Type, std::allocator_arg_t, <span class="keyword">const</span> Allocator &, Params...>) {</div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="keywordflow">return</span> std::tuple<std::allocator_arg_t, <span class="keyword">const</span> Allocator &, Params &&...>{std::allocator_arg, allocator, std::forward<Params>(params)...};</div>
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<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <span class="keyword">static_assert</span>(std::is_constructible_v<Type, Params..., <span class="keyword">const</span> Allocator &>, <span class="stringliteral">"Ill-formed request"</span>);</div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">return</span> std::forward_as_tuple(std::forward<Params>(params)..., allocator);</div>
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<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> }</div>
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<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> }</div>
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<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> }</div>
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span>};</div>
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<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> </div>
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<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span><span class="keyword">template</span><<span class="keyword">typename</span> Type, <span class="keyword">typename</span> Other></div>
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<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span><span class="keyword">struct </span>uses_allocator_construction<std::pair<Type, Other>> {</div>
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<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="keyword">using </span>type = std::pair<Type, Other>;</div>
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<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> </div>
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<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keyword">template</span><<span class="keyword">typename</span> Allocator, <span class="keyword">typename</span> First, <span class="keyword">typename</span> Second></div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> args(<span class="keyword">const</span> Allocator &allocator, std::piecewise_construct_t, First &&first, Second &&second) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keywordflow">return</span> std::make_tuple(</div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> std::piecewise_construct,</div>
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> std::apply([&allocator](<span class="keyword">auto</span> &&...curr) { <span class="keywordflow">return</span> uses_allocator_construction<Type>::args(allocator, std::forward<<span class="keyword">decltype</span>(curr)>(curr)...); }, std::forward<First>(first)),</div>
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<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> std::apply([&allocator](<span class="keyword">auto</span> &&...curr) { <span class="keywordflow">return</span> uses_allocator_construction<Other>::args(allocator, std::forward<<span class="keyword">decltype</span>(curr)>(curr)...); }, std::forward<Second>(second)));</div>
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<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> }</div>
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<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> </div>
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<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> <span class="keyword">template</span><<span class="keyword">typename</span> Allocator></div>
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<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> args(<span class="keyword">const</span> Allocator &allocator) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keywordflow">return</span> uses_allocator_construction<type>::args(allocator, std::piecewise_construct, std::tuple<>{}, std::tuple<>{});</div>
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<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> }</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> Allocator, <span class="keyword">typename</span> First, <span class="keyword">typename</span> Second></div>
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<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> args(<span class="keyword">const</span> Allocator &allocator, First &&first, Second &&second) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> <span class="keywordflow">return</span> uses_allocator_construction<type>::args(allocator, std::piecewise_construct, std::forward_as_tuple(std::forward<First>(first)), std::forward_as_tuple(std::forward<Second>(second)));</div>
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> }</div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> </div>
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<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="keyword">template</span><<span class="keyword">typename</span> Allocator, <span class="keyword">typename</span> First, <span class="keyword">typename</span> Second></div>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> args(<span class="keyword">const</span> Allocator &allocator, <span class="keyword">const</span> std::pair<First, Second> &value) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> <span class="keywordflow">return</span> uses_allocator_construction<type>::args(allocator, std::piecewise_construct, std::forward_as_tuple(value.first), std::forward_as_tuple(value.second));</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> </div>
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<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> <span class="keyword">template</span><<span class="keyword">typename</span> Allocator, <span class="keyword">typename</span> First, <span class="keyword">typename</span> Second></div>
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<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> args(<span class="keyword">const</span> Allocator &allocator, std::pair<First, Second> &&value) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> <span class="keywordflow">return</span> uses_allocator_construction<type>::args(allocator, std::piecewise_construct, std::forward_as_tuple(std::move(value.first)), std::forward_as_tuple(std::move(value.second)));</div>
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<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> }</div>
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<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span>};</div>
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<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> </div>
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<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span>} <span class="comment">// namespace internal</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="l00200" name="l00200"></a><span class="lineno"> 200</span><span class="keyword">template</span><<span class="keyword">typename</span> Type, <span class="keyword">typename</span> Allocator, <span class="keyword">typename</span>... Args></div>
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<div class="foldopen" id="foldopen00201" data-start="{" data-end="}">
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<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"><a class="line" href="namespaceentt.html#ac447ddab9d528647a79fd9aca429faed"> 201</a></span><span class="keyword">constexpr</span> <span class="keyword">auto</span> <a class="code hl_function" href="namespaceentt.html#ac447ddab9d528647a79fd9aca429faed">uses_allocator_construction_args</a>(<span class="keyword">const</span> Allocator &allocator, Args &&...args) <span class="keyword">noexcept</span> {</div>
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<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> <span class="keywordflow">return</span> internal::uses_allocator_construction<Type>::args(allocator, std::forward<Args>(args)...);</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>
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<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span></div>
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<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span><span class="keyword">template</span><<span class="keyword">typename</span> Type, <span class="keyword">typename</span> Allocator, <span class="keyword">typename</span>... Args></div>
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<div class="foldopen" id="foldopen00219" data-start="{" data-end="}">
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<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"><a class="line" href="namespaceentt.html#a12e4d0c58f9c4cc6f5513c39c530b9b7"> 219</a></span><span class="keyword">constexpr</span> Type <a class="code hl_function" href="namespaceentt.html#a12e4d0c58f9c4cc6f5513c39c530b9b7">make_obj_using_allocator</a>(<span class="keyword">const</span> Allocator &allocator, Args &&...args) {</div>
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<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> <span class="keywordflow">return</span> std::make_from_tuple<Type>(internal::uses_allocator_construction<Type>::args(allocator, std::forward<Args>(args)...));</div>
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<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span>}</div>
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</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="l00237" name="l00237"></a><span class="lineno"> 237</span><span class="keyword">template</span><<span class="keyword">typename</span> Type, <span class="keyword">typename</span> Allocator, <span class="keyword">typename</span>... Args></div>
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<div class="foldopen" id="foldopen00238" data-start="{" data-end="}">
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<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"><a class="line" href="namespaceentt.html#a81f946567d220e7c8814636333d0cbe0"> 238</a></span><span class="keyword">constexpr</span> Type *<a class="code hl_function" href="namespaceentt.html#a81f946567d220e7c8814636333d0cbe0">uninitialized_construct_using_allocator</a>(Type *value, <span class="keyword">const</span> Allocator &allocator, Args &&...args) {</div>
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<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> <span class="keywordflow">return</span> std::apply([value](<span class="keyword">auto</span> &&...curr) { return ::new(value) Type(std::forward<<span class="keyword">decltype</span>(curr)>(curr)...); }, internal::uses_allocator_construction<Type>::args(allocator, std::forward<Args>(args)...));</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>
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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="comment">// namespace entt</span></div>
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<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> </div>
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<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span><span class="preprocessor">#endif</span></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#l00022">dense_map.hpp:22</a></div></div>
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<div class="ttc" id="anamespaceentt_html_a0dd7ed3d3f11933cd542d8f4646cd695"><div class="ttname"><a href="namespaceentt.html#a0dd7ed3d3f11933cd542d8f4646cd695">entt::propagate_on_container_swap</a></div><div class="ttdeci">constexpr void propagate_on_container_swap(Allocator &lhs, Allocator &rhs) noexcept</div><div class="ttdoc">Utility function to design allocation-aware containers.</div><div class="ttdef"><b>Definition</b> <a href="#l00061">memory.hpp:61</a></div></div>
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<div class="ttc" id="anamespaceentt_html_a12e4d0c58f9c4cc6f5513c39c530b9b7"><div class="ttname"><a href="namespaceentt.html#a12e4d0c58f9c4cc6f5513c39c530b9b7">entt::make_obj_using_allocator</a></div><div class="ttdeci">constexpr Type make_obj_using_allocator(const Allocator &allocator, Args &&...args)</div><div class="ttdoc">Uses-allocator construction utility (waiting for C++20).</div><div class="ttdef"><b>Definition</b> <a href="#l00219">memory.hpp:219</a></div></div>
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<div class="ttc" id="anamespaceentt_html_a2e05563b8d3e3b61cf9b06e9e0904cc7"><div class="ttname"><a href="namespaceentt.html#a2e05563b8d3e3b61cf9b06e9e0904cc7">entt::swap</a></div><div class="ttdeci">constexpr void swap(compressed_pair< First, Second > &lhs, compressed_pair< First, Second > &rhs) noexcept</div><div class="ttdoc">Swaps two compressed pair objects.</div><div class="ttdef"><b>Definition</b> <a href="compressed__pair_8hpp_source.html#l00243">compressed_pair.hpp:243</a></div></div>
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<div class="ttc" id="anamespaceentt_html_a46cd263b358a2d495d4f4ee27d4537d7"><div class="ttname"><a href="namespaceentt.html#a46cd263b358a2d495d4f4ee27d4537d7">entt::propagate_on_container_move_assignment</a></div><div class="ttdeci">constexpr void propagate_on_container_move_assignment(Allocator &lhs, Allocator &rhs) noexcept</div><div class="ttdoc">Utility function to design allocation-aware containers.</div><div class="ttdef"><b>Definition</b> <a href="#l00048">memory.hpp:48</a></div></div>
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<div class="ttc" id="anamespaceentt_html_a81f946567d220e7c8814636333d0cbe0"><div class="ttname"><a href="namespaceentt.html#a81f946567d220e7c8814636333d0cbe0">entt::uninitialized_construct_using_allocator</a></div><div class="ttdeci">constexpr Type * uninitialized_construct_using_allocator(Type *value, const Allocator &allocator, Args &&...args)</div><div class="ttdoc">Uses-allocator construction utility (waiting for C++20).</div><div class="ttdef"><b>Definition</b> <a href="#l00238">memory.hpp:238</a></div></div>
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<div class="ttc" id="anamespaceentt_html_ac447ddab9d528647a79fd9aca429faed"><div class="ttname"><a href="namespaceentt.html#ac447ddab9d528647a79fd9aca429faed">entt::uses_allocator_construction_args</a></div><div class="ttdeci">constexpr auto uses_allocator_construction_args(const Allocator &allocator, Args &&...args) noexcept</div><div class="ttdoc">Uses-allocator construction utility (waiting for C++20).</div><div class="ttdef"><b>Definition</b> <a href="#l00201">memory.hpp:201</a></div></div>
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<div class="ttc" id="anamespaceentt_html_ae3729f1b7699d013f982b2de2ec781f9"><div class="ttname"><a href="namespaceentt.html#ae3729f1b7699d013f982b2de2ec781f9">entt::allocate_unique</a></div><div class="ttdeci">constexpr auto allocate_unique(Allocator &allocator, Args &&...args)</div><div class="ttdoc">Allows std::unique_ptr to use allocators (waiting for C++20).</div><div class="ttdef"><b>Definition</b> <a href="#l00109">memory.hpp:109</a></div></div>
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<div class="ttc" id="anamespaceentt_html_ae934980252d1f2ce8f2473c8d74347df"><div class="ttname"><a href="namespaceentt.html#ae934980252d1f2ce8f2473c8d74347df">entt::propagate_on_container_copy_assignment</a></div><div class="ttdeci">constexpr void propagate_on_container_copy_assignment(Allocator &lhs, Allocator &rhs) noexcept</div><div class="ttdoc">Utility function to design allocation-aware containers.</div><div class="ttdef"><b>Definition</b> <a href="#l00035">memory.hpp:35</a></div></div>
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<div class="ttc" id="anamespaceentt_html_af0ecb90b45a53e3272d761c237a0d850"><div class="ttname"><a href="namespaceentt.html#af0ecb90b45a53e3272d761c237a0d850">entt::to_address</a></div><div class="ttdeci">constexpr auto to_address(Type &&ptr) noexcept</div><div class="ttdoc">Unwraps fancy pointers, does nothing otherwise (waiting for C++20).</div><div class="ttdef"><b>Definition</b> <a href="#l00020">memory.hpp:20</a></div></div>
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<div class="ttc" id="astructentt_1_1allocation__deleter_html_a37186f63eb16409b00b0261041b68c5c"><div class="ttname"><a href="structentt_1_1allocation__deleter.html#a37186f63eb16409b00b0261041b68c5c">entt::allocation_deleter::pointer</a></div><div class="ttdeci">typename std::allocator_traits< Allocator >::pointer pointer</div><div class="ttdoc">Pointer type.</div><div class="ttdef"><b>Definition</b> <a href="#l00079">memory.hpp:79</a></div></div>
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<div class="ttc" id="astructentt_1_1allocation__deleter_html_a5adbf1ba5d47a86d0b67d2c565fed220"><div class="ttname"><a href="structentt_1_1allocation__deleter.html#a5adbf1ba5d47a86d0b67d2c565fed220">entt::allocation_deleter::allocation_deleter</a></div><div class="ttdeci">constexpr allocation_deleter(const allocator_type &alloc) noexcept(std::is_nothrow_copy_constructible_v< allocator_type >)</div><div class="ttdoc">Inherited constructors.</div><div class="ttdef"><b>Definition</b> <a href="#l00085">memory.hpp:85</a></div></div>
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<div class="ttc" id="astructentt_1_1allocation__deleter_html_aaeea55e9539671ec5d6b1660f25e57d3"><div class="ttname"><a href="structentt_1_1allocation__deleter.html#aaeea55e9539671ec5d6b1660f25e57d3">entt::allocation_deleter::operator()</a></div><div class="ttdeci">constexpr void operator()(pointer ptr) noexcept(std::is_nothrow_destructible_v< typename allocator_type::value_type >)</div><div class="ttdoc">Destroys the pointed object and deallocates its memory.</div><div class="ttdef"><b>Definition</b> <a href="#l00092">memory.hpp:92</a></div></div>
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<div class="ttc" id="astructentt_1_1allocation__deleter_html_abce9d9de78a31b79e98745f4e029c863"><div class="ttname"><a href="structentt_1_1allocation__deleter.html#abce9d9de78a31b79e98745f4e029c863">entt::allocation_deleter::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="#l00077">memory.hpp:77</a></div></div>
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