<!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++: initializer_list 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('a00029_source.html','');}); /* @license-end */ </script> <div id="doc-content"> <div class="header"> <div class="headertitle"> <div class="title">initializer_list</div> </div> </div><!--header--> <div class="contents"> <a href="a00029.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">// std::initializer_list support -*- 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) 2008-2018 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 GCC.</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// GCC is free software; you can redistribute it and/or modify</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// it under the terms of the GNU General Public License as published by</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// the Free Software Foundation; either version 3, or (at your option)</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// any later version.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">//</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// GCC is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// GNU General Public License for more details.</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">//</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></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> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">/** @file initializer_list</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * This is a Standard C++ Library header.</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#ifndef _INITIALIZER_LIST</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#define _INITIALIZER_LIST</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#pragma GCC system_header</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#if __cplusplus < 201103L</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"># include <<a class="code" href="a00299.html">bits/c++0x_warning.h</a>></span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#else // C++0x</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="preprocessor">#pragma GCC visibility push(default)</span></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> <span class="preprocessor">#include <<a class="code" href="a00656.html">bits/c++config.h</a>></span></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><a class="code" href="a01538.html">std</a></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> {<span class="comment"></span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> /// initializer_list</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">class</span> _E></div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="a01652.html"> 47</a></span>  <span class="keyword">class </span><a class="code" href="a01652.html">initializer_list</a></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  {</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">typedef</span> _E value_type;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _E& reference;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _E& const_reference;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">typedef</span> <span class="keywordtype">size_t</span> size_type;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _E* iterator;</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _E* const_iterator;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  iterator _M_array;</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  size_type _M_len;</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="comment">// The compiler can call a private constructor.</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  constexpr <a class="code" href="a01652.html">initializer_list</a>(const_iterator __a, size_type __l)</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  : _M_array(__a), _M_len(__l) { }</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>  <span class="keyword">public</span>:</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  constexpr <a class="code" href="a01652.html">initializer_list</a>() noexcept</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  : _M_array(0), _M_len(0) { }</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// Number of elements.</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  constexpr size_type</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  size() <span class="keyword">const</span> noexcept { <span class="keywordflow">return</span> _M_len; }</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>  <span class="comment">// First element.</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  constexpr const_iterator</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  begin() <span class="keyword">const</span> noexcept { <span class="keywordflow">return</span> _M_array; }</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// One past the last element.</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  constexpr const_iterator</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  end() <span class="keyword">const</span> noexcept { <span class="keywordflow">return</span> begin() + size(); }</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="comment"></span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> /**</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> * @brief Return an iterator pointing to the first element of</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> * the initializer_list.</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> * @param __ils Initializer list.</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"> */</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">template</span><<span class="keyword">class</span> _Tp></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  constexpr <span class="keyword">const</span> _Tp*</div><div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="a01538.html#a549ebac15bcc03ae83f87b89796d89fc"> 89</a></span>  <a class="code" href="a01538.html#a549ebac15bcc03ae83f87b89796d89fc">begin</a>(<a class="code" href="a01652.html">initializer_list<_Tp></a> __ils) noexcept</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  { <span class="keywordflow">return</span> __ils.begin(); }</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"></span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> /**</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> * @brief Return an iterator pointing to one past the last element</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> * of the initializer_list.</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> * @param __ils Initializer list.</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> */</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">template</span><<span class="keyword">class</span> _Tp></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  constexpr <span class="keyword">const</span> _Tp*</div><div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="a01538.html#a579ff3807b61f57bda29d023b3918504"> 99</a></span>  <a class="code" href="a01538.html#a579ff3807b61f57bda29d023b3918504">end</a>(<a class="code" href="a01652.html">initializer_list<_Tp></a> __ils) noexcept</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  { <span class="keywordflow">return</span> __ils.end(); }</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> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="preprocessor">#pragma GCC visibility pop</span></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> <span class="preprocessor">#endif // C++11</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="preprocessor">#endif // _INITIALIZER_LIST</span></div><div class="ttc" id="a00656_html"><div class="ttname"><a href="a00656.html">c++config.h</a></div></div> <div class="ttc" id="a01538_html_a579ff3807b61f57bda29d023b3918504"><div class="ttname"><a href="a01538.html#a579ff3807b61f57bda29d023b3918504">std::end</a></div><div class="ttdeci">constexpr const _Tp * end(initializer_list< _Tp > __ils) noexcept</div><div class="ttdoc">Return an iterator pointing to one past the last element of the initializer_list.</div><div class="ttdef"><b>Definition:</b> <a href="a00029_source.html#l00099">initializer_list:99</a></div></div> <div class="ttc" id="a01538_html_a549ebac15bcc03ae83f87b89796d89fc"><div class="ttname"><a href="a01538.html#a549ebac15bcc03ae83f87b89796d89fc">std::begin</a></div><div class="ttdeci">constexpr const _Tp * begin(initializer_list< _Tp > __ils) noexcept</div><div class="ttdoc">Return an iterator pointing to the first element of the initializer_list.</div><div class="ttdef"><b>Definition:</b> <a href="a00029_source.html#l00089">initializer_list:89</a></div></div> <div class="ttc" id="a00299_html"><div class="ttname"><a href="a00299.html">c++0x_warning.h</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="a01652_html"><div class="ttname"><a href="a01652.html">std::initializer_list</a></div><div class="ttdoc">initializer_list</div><div class="ttdef"><b>Definition:</b> <a href="a00029_source.html#l00047">initializer_list:47</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_434a3f2b81816e64e09d7f43ca77c261.html">libstdc++-v3</a></li><li class="navelem"><a class="el" href="dir_a90251c88a7d73de47aa10417ea6b112.html">libsupc++</a></li><li class="navelem"><a class="el" href="a00029.html">initializer_list</a></li> <li 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