<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.15"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>libstdc++: array Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtreedata.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ $(document).ready(initResizable); /* @license-end */</script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td id="projectalign" style="padding-left: 0.5em;"> <div id="projectname">libstdc++ </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.15 --> </div><!-- top --> <div id="side-nav" class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> <div id="nav-sync" class="sync"></div> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ $(document).ready(function(){initNavTree('a16482_source.html','');}); /* @license-end */ </script> <div id="doc-content"> <div class="header"> <div class="headertitle"> <div class="title">experimental/array</div> </div> </div><!--header--> <div class="contents"> <a href="a16482.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// <experimental/array> -*- C++ -*-</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Copyright (C) 2015-2018 Free Software Foundation, Inc.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// software; you can redistribute it and/or modify it under the</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// terms of the GNU General Public License as published by the</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// any later version.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// GNU General Public License for more details.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/** @file experimental/array</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * This is a TS C++ Library header.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> */</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#ifndef _GLIBCXX_EXPERIMENTAL_ARRAY</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#define _GLIBCXX_EXPERIMENTAL_ARRAY 1</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#pragma GCC system_header</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#if __cplusplus >= 201402L</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="a16482.html">array</a>></span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <<a class="code" href="a17211.html">experimental/type_traits</a>></span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">namespace </span><a class="code" href="a01538.html">std</a> _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> {</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">namespace </span>experimental</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">inline</span> <span class="keyword">namespace </span>fundamentals_v2</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> {</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#define __cpp_lib_experimental_make_array 201505</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> /**</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> * @defgroup make_array Array creation functions</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> * @ingroup experimental</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> *</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> * Array creation functions as described in N4529,</span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> * Working Draft, C++ Extensions for Library Fundamentals, Version 2</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> *</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> * @{</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> */</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">template</span><<span class="keyword">typename</span> _Dest, <span class="keyword">typename</span>... _Types></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">struct </span>__make_array_elem</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">using</span> type = _Dest;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  };</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">template</span><<span class="keyword">typename</span>... _Types></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">struct </span>__make_array_elem<void, _Types...></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  : common_type<_Types...></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  {</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">template</span> <<span class="keyword">typename</span>></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">struct </span>__is_reference_wrapper : <a class="code" href="a01476.html#gaebe6729ab5488ecc76c762873d226857">false_type</a></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  {};</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Up></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keyword">struct </span>__is_reference_wrapper<reference_wrapper<_Up>> : <a class="code" href="a01476.html#ga6a860513044e23d34e553ea986e83fa1">true_type</a></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> </div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  static_assert(!__or_<__is_reference_wrapper<decay_t<_Types>>...>::value,</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="stringliteral">"make_array must be used with an explicit target type when"</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="stringliteral">"any of the arguments is a reference_wrapper"</span>);</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  };</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">template</span> <<span class="keyword">typename</span> _Dest = void, <span class="keyword">typename</span>... _Types></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  constexpr</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  array<<span class="keyword">typename</span> __make_array_elem<_Dest, _Types...>::type, <span class="keyword">sizeof</span>...(_Types)></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  make_array(_Types&&... __t)</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  {</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span> {{ std::forward<_Types>(__t)... }};</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> </div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="keyword">template</span> <<span class="keyword">typename</span> _Tp, <span class="keywordtype">size_t</span> _Nm, <span class="keywordtype">size_t</span>... _Idx></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  constexpr array<remove_cv_t<_Tp>, _Nm></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  __to_array(_Tp (&__a)[_Nm], index_sequence<_Idx...>)</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>  <span class="keywordflow">return</span> {{__a[_Idx]...}};</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">template</span> <<span class="keyword">typename</span> _Tp, <span class="keywordtype">size_t</span> _Nm></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  constexpr array<remove_cv_t<_Tp>, _Nm></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  to_array(_Tp (&__a)[_Nm])</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  noexcept(is_nothrow_constructible<remove_cv_t<_Tp>, _Tp&>::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>  <span class="keywordflow">return</span> __to_array(__a, make_index_sequence<_Nm>{});</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// @} group make_array</span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> } <span class="comment">// namespace fundamentals_v2</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> } <span class="comment">// namespace experimental</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> } <span class="comment">// namespace std</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#endif // C++14</span></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> <span class="preprocessor">#endif // _GLIBCXX_EXPERIMENTAL_ARRAY</span></div><div class="ttc" id="a17211_html"><div class="ttname"><a href="a17211.html">type_traits</a></div></div> <div class="ttc" id="a01476_html_gaebe6729ab5488ecc76c762873d226857"><div class="ttname"><a href="a01476.html#gaebe6729ab5488ecc76c762873d226857">std::false_type</a></div><div class="ttdeci">integral_constant< bool, false > false_type</div><div class="ttdoc">The type used as a compile-time boolean with false value.</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l00078">type_traits:78</a></div></div> <div class="ttc" id="a01476_html_ga6a860513044e23d34e553ea986e83fa1"><div class="ttname"><a href="a01476.html#ga6a860513044e23d34e553ea986e83fa1">std::true_type</a></div><div class="ttdeci">integral_constant< bool, true > true_type</div><div class="ttdoc">The type used as a compile-time boolean with true value.</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l00075">type_traits:75</a></div></div> <div class="ttc" id="a01538_html"><div class="ttname"><a href="a01538.html">std</a></div><div class="ttdoc">ISO C++ entities toplevel namespace is std.</div></div> <div class="ttc" id="a16482_html"><div class="ttname"><a href="a16482.html">array</a></div></div> </div><!-- fragment --></div><!-- contents --> </div><!-- doc-content --> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> <li class="navelem"><a class="el" href="dir_3a83f109ff04170a1f8448445d1bdcba.html">include</a></li><li class="navelem"><a class="el" href="dir_70d4ab3a5261b72adc47eec15b413144.html">experimental</a></li><li class="navelem"><a class="el" href="a16482.html">array</a></li> <li class="footer">Generated by 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