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<a href="iterators_8h.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">// Copyright 2010-2018 Google LLC</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// You may obtain a copy of the License at</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// Helper classes to make it easy to implement range-based for loops.</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="preprocessor">#ifndef UTIL_GRAPH_ITERATORS_H_</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#define UTIL_GRAPH_ITERATORS_H_</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="preprocessor">#include <iterator></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">namespace </span><a class="code" href="namespaceutil.html">util</a> {</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// This is useful for wrapping iterators of a class that support many different</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// iterations. For instance, on a Graph class, one can write:</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">//</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// BeginEndWrapper<OutgoingArcIterator> Graph::OutgoingArcs(NodeInde node)</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// const {</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// return BeginEndRange(</span></div><div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="namespaceutil.html#aadd7603ae6e78cc2490ca9710fbaf180"> 30</a></span> <span class="comment">// OutgoingArcIterator(*this, node, /*at_end=*/false),</span></div><div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="namespaceutil.html#acc90f8dbcd326a450a7c781ea7a9539d"> 31</a></span> <span class="comment">// OutgoingArcIterator(*this, node, /*at_end=*/true));</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// }</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">//</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// And a client will use it like this:</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">//</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// for (const ArcIndex arc : graph.OutgoingArcs(node)) { ... }</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Iterator></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">class </span><a class="code" href="iterators_8h.html#af3f6bc803bbe87af730cf9e41a35cf68">BeginEndWrapper</a> {</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="iterators_8h.html#a83b9f519556accd1f067da73da5f0624"> 40</a></span>  <span class="keyword">using</span> const_iterator = Iterator;</div><div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="iterators_8h.html#ae7f303a443fbf651b13f8289d05ef498"> 41</a></span>  <span class="keyword">using</span> <a class="code" href="iterators_8h.html#ae7f303a443fbf651b13f8289d05ef498">value_type</a> = <span class="keyword">typename</span> <a class="code" href="iterators_8h.html#ae7f303a443fbf651b13f8289d05ef498">std::iterator_traits<Iterator>::value_type</a>;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="iterators_8h.html#af3f6bc803bbe87af730cf9e41a35cf68"> 43</a></span>  <a class="code" href="iterators_8h.html#af3f6bc803bbe87af730cf9e41a35cf68">BeginEndWrapper</a>(Iterator <a class="code" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a>, Iterator <a class="code" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</a>) : begin_(<a class="code" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a>), end_(<a class="code" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</a>) {}</div><div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577"> 44</a></span>  Iterator <a class="code" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> begin_; }</div><div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d"> 45</a></span>  Iterator <a class="code" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> end_; }</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="iterators_8h.html#a644718bb2fb240de962dc3c9a1fdf0dc"> 47</a></span>  <span class="keywordtype">bool</span> <a class="code" href="iterators_8h.html#a644718bb2fb240de962dc3c9a1fdf0dc">empty</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a>() == <a class="code" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</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">private</span>:</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">const</span> Iterator begin_;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">const</span> Iterator end_;</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> </div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">// Inline wrapper methods, to make the client code even simpler.</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// The harm of overloading is probably less than the benefit of the nice,</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// compact name, in this special case.</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Iterator></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">inline</span> BeginEndWrapper<Iterator> BeginEndRange(Iterator <a class="code" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a>, Iterator <a class="code" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</a>) {</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">return</span> BeginEndWrapper<Iterator>(<a class="code" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a>, <a class="code" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</a>);</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">template</span> <<span class="keyword">typename</span> Iterator></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">inline</span> BeginEndWrapper<Iterator> BeginEndRange(</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  std::pair<Iterator, Iterator> begin_end) {</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">return</span> BeginEndWrapper<Iterator>(begin_end.first, begin_end.second);</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> </div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment">// Shortcut for BeginEndRange(multimap::equal_range(key)).</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// TODO(user): go further and expose only the values, not the pairs (key,</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// values) since the caller already knows the key.</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">template</span> <<span class="keyword">typename</span> MultiMap></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">inline</span> BeginEndWrapper<typename MultiMap::iterator> EqualRange(</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  MultiMap& multi_map, <span class="keyword">const</span> <span class="keyword">typename</span> MultiMap::key_type& key) {</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">return</span> BeginEndRange(multi_map.equal_range(key));</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> <span class="keyword">template</span> <<span class="keyword">typename</span> MultiMap></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="keyword">inline</span> BeginEndWrapper<typename MultiMap::const_iterator> EqualRange(</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">const</span> MultiMap& multi_map, <span class="keyword">const</span> <span class="keyword">typename</span> MultiMap::key_type& key) {</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">return</span> BeginEndRange(multi_map.equal_range(key));</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="comment">// The Reverse() function allows to reverse the iteration order of a range-based</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">// for loop over a container that support STL reverse iterators.</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// The syntax is:</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment">// for (const type& t : Reverse(container_of_t)) { ... }</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Container></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">class </span>BeginEndReverseIteratorWrapper {</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">explicit</span> BeginEndReverseIteratorWrapper(<span class="keyword">const</span> Container& c) : c_(c) {}</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">typename</span> Container::const_reverse_iterator <a class="code" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> c_.rbegin();</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>  <span class="keyword">typename</span> Container::const_reverse_iterator <a class="code" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> c_.rend(); }</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keyword">const</span> Container& c_;</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> <span class="keyword">template</span> <<span class="keyword">typename</span> Container></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> BeginEndReverseIteratorWrapper<Container> Reverse(<span class="keyword">const</span> Container& c) {</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> BeginEndReverseIteratorWrapper<Container>(c);</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> <span class="comment">// Simple iterator on an integer range, see IntegerRange below.</span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">template</span> <<span class="keyword">typename</span> IntegerType></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="keyword">class </span>IntegerRangeIterator</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  : <span class="keyword">public</span> std::iterator<std::input_iterator_tag, IntegerType> {</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keyword">explicit</span> IntegerRangeIterator(IntegerType value) : index_(value) {}</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  IntegerRangeIterator(<span class="keyword">const</span> IntegerRangeIterator& other)</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  : index_(other.index_) {}</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  IntegerRangeIterator& operator=(<span class="keyword">const</span> IntegerRangeIterator& other) {</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  index_ = other.index_;</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="keywordtype">bool</span> operator!=(<span class="keyword">const</span> IntegerRangeIterator& other)<span class="keyword"> const </span>{</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="comment">// This may seems weird, but using < instead of != avoid almost-infinite</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="comment">// loop if one use IntegerRange<int>(1, 0) below for instance.</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">return</span> index_ < other.index_;</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>  <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> IntegerRangeIterator& other)<span class="keyword"> const </span>{</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">return</span> index_ == other.index_;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  IntegerType operator*()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> index_; }</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  IntegerRangeIterator& operator++() {</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  ++index_;</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</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>  IntegerRangeIterator operator++(<span class="keywordtype">int</span>) {</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  IntegerRangeIterator previous_position(*<span class="keyword">this</span>);</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  ++index_;</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">return</span> previous_position;</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> </div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  IntegerType index_;</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> </div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment">// Allows to easily construct nice functions for range-based for loop.</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment">// This can be used like this:</span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment">//</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment">// for (const int i : IntegerRange<int>(0, 10)) { ... }</span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment">//</span></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment">// But it main purpose is to be used as return value for more complex classes:</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment">//</span></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment">// for (const ArcIndex arc : graph.AllOutgoingArcs());</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment">// for (const NodeIndex node : graph.AllNodes());</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="keyword">template</span> <<span class="keyword">typename</span> IntegerType></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="keyword">class </span>IntegerRange : <span class="keyword">public</span> <a class="code" href="iterators_8h.html#af3f6bc803bbe87af730cf9e41a35cf68">BeginEndWrapper</a><IntegerRangeIterator<IntegerType>> {</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  IntegerRange(IntegerType <a class="code" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a>, IntegerType <a class="code" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</a>)</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  : <a class="code" href="iterators_8h.html#af3f6bc803bbe87af730cf9e41a35cf68">BeginEndWrapper</a><IntegerRangeIterator<IntegerType>>(</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  IntegerRangeIterator<IntegerType>(<a class="code" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a>),</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  IntegerRangeIterator<IntegerType>(<a class="code" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</a>)) {}</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> };</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment">// Allow iterating over a std::vector<T> as a mutable std::vector<T*>.</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="keyword">template</span> <<span class="keyword">class</span> T></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="keyword">struct </span>MutableVectorIteration {</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">explicit</span> MutableVectorIteration(std::vector<T>* v) : v_(v) {}</div><div class="line"><a name="l00158"></a><span class="lineno"><a class="line" href="structMutableVectorIteration_1_1Iterator.html"> 158</a></span>  <span class="keyword">struct </span><a class="code" href="structMutableVectorIteration_1_1Iterator.html">Iterator</a> {</div><div class="line"><a name="l00159"></a><span class="lineno"><a class="line" href="structMutableVectorIteration_1_1Iterator.html#a89176363ea78bbe3e9ea5c0d1542d0dd"> 159</a></span>  <span class="keyword">explicit</span> <a class="code" href="structMutableVectorIteration_1_1Iterator.html#a89176363ea78bbe3e9ea5c0d1542d0dd">Iterator</a>(<span class="keyword">typename</span> std::vector<T>::iterator it) : it_(it) {}</div><div class="line"><a name="l00160"></a><span class="lineno"><a class="line" href="structMutableVectorIteration_1_1Iterator.html#a3c0dc6759b61b21af1e6c8e76d5ff6b2"> 160</a></span>  T* operator*() { <span class="keywordflow">return</span> &*it_; }</div><div class="line"><a name="l00161"></a><span class="lineno"><a class="line" href="structMutableVectorIteration_1_1Iterator.html#a1e71d8d1b6089d432b3cfcf8a910986b"> 161</a></span>  <a class="code" href="structMutableVectorIteration_1_1Iterator.html">Iterator</a>& <a class="code" href="structMutableVectorIteration_1_1Iterator.html#a1e71d8d1b6089d432b3cfcf8a910986b">operator++</a>() {</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  it_++;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  }</div><div class="line"><a name="l00165"></a><span class="lineno"><a class="line" href="structMutableVectorIteration_1_1Iterator.html#a9d75c806795d253b1dabbecb84ddcaf6"> 165</a></span>  <span class="keywordtype">bool</span> <a class="code" href="structMutableVectorIteration_1_1Iterator.html#a9d75c806795d253b1dabbecb84ddcaf6">operator!=</a>(<span class="keyword">const</span> <a class="code" href="structMutableVectorIteration_1_1Iterator.html">Iterator</a>& other)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> other.it_ != it_; }</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>  <span class="keyword">private</span>:</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">typename</span> std::vector<T>::iterator it_;</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  };</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  Iterator <a class="code" href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a>() { <span class="keywordflow">return</span> Iterator(v_->begin()); }</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  Iterator <a class="code" href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</a>() { <span class="keywordflow">return</span> Iterator(v_->end()); }</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  std::vector<T>* <span class="keyword">const</span> v_;</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="comment">// namespace util</span></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="preprocessor">#endif // UTIL_GRAPH_ITERATORS_H_</span></div><div class="ttc" id="namespaceutil_html"><div class="ttname"><a href="namespaceutil.html">util</a></div><div class="ttdoc">Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in c...</div><div class="ttdef"><b>Definition:</b> <a href="connected__components_8h_source.html#l00056">connected_components.h:56</a></div></div>
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<div class="ttc" id="iterators_8h_html_a09dd208593b9721a30a83ed978ede577"><div class="ttname"><a href="iterators_8h.html#a09dd208593b9721a30a83ed978ede577">begin</a></div><div class="ttdeci">Iterator begin() const</div><div class="ttdef"><b>Definition:</b> <a href="iterators_8h_source.html#l00044">iterators.h:44</a></div></div>
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<div class="ttc" id="structMutableVectorIteration_1_1Iterator_html_a1e71d8d1b6089d432b3cfcf8a910986b"><div class="ttname"><a href="structMutableVectorIteration_1_1Iterator.html#a1e71d8d1b6089d432b3cfcf8a910986b">MutableVectorIteration::Iterator::operator++</a></div><div class="ttdeci">Iterator & operator++()</div><div class="ttdef"><b>Definition:</b> <a href="iterators_8h_source.html#l00161">iterators.h:161</a></div></div>
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<div class="ttc" id="iterators_8h_html_a644718bb2fb240de962dc3c9a1fdf0dc"><div class="ttname"><a href="iterators_8h.html#a644718bb2fb240de962dc3c9a1fdf0dc">empty</a></div><div class="ttdeci">bool empty() const</div><div class="ttdef"><b>Definition:</b> <a href="iterators_8h_source.html#l00047">iterators.h:47</a></div></div>
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<div class="ttc" id="iterators_8h_html_a62469461ed7c932afba3808f4da0fe3d"><div class="ttname"><a href="iterators_8h.html#a62469461ed7c932afba3808f4da0fe3d">end</a></div><div class="ttdeci">Iterator end() const</div><div class="ttdef"><b>Definition:</b> <a href="iterators_8h_source.html#l00045">iterators.h:45</a></div></div>
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<div class="ttc" id="structMutableVectorIteration_1_1Iterator_html_a89176363ea78bbe3e9ea5c0d1542d0dd"><div class="ttname"><a href="structMutableVectorIteration_1_1Iterator.html#a89176363ea78bbe3e9ea5c0d1542d0dd">MutableVectorIteration::Iterator::Iterator</a></div><div class="ttdeci">Iterator(typename std::vector< T >::iterator it)</div><div class="ttdef"><b>Definition:</b> <a href="iterators_8h_source.html#l00159">iterators.h:159</a></div></div>
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<div class="ttc" id="structMutableVectorIteration_1_1Iterator_html"><div class="ttname"><a href="structMutableVectorIteration_1_1Iterator.html">MutableVectorIteration::Iterator</a></div><div class="ttdef"><b>Definition:</b> <a href="iterators_8h_source.html#l00158">iterators.h:158</a></div></div>
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<div class="ttc" id="iterators_8h_html_af3f6bc803bbe87af730cf9e41a35cf68"><div class="ttname"><a href="iterators_8h.html#af3f6bc803bbe87af730cf9e41a35cf68">BeginEndWrapper</a></div><div class="ttdeci">BeginEndWrapper(Iterator begin, Iterator end)</div><div class="ttdef"><b>Definition:</b> <a href="iterators_8h_source.html#l00043">iterators.h:43</a></div></div>
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<div class="ttc" id="structMutableVectorIteration_1_1Iterator_html_a9d75c806795d253b1dabbecb84ddcaf6"><div class="ttname"><a href="structMutableVectorIteration_1_1Iterator.html#a9d75c806795d253b1dabbecb84ddcaf6">MutableVectorIteration::Iterator::operator!=</a></div><div class="ttdeci">bool operator!=(const Iterator &other) const</div><div class="ttdef"><b>Definition:</b> <a href="iterators_8h_source.html#l00165">iterators.h:165</a></div></div>
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<div class="ttc" id="iterators_8h_html_ae7f303a443fbf651b13f8289d05ef498"><div class="ttname"><a href="iterators_8h.html#ae7f303a443fbf651b13f8289d05ef498">value_type</a></div><div class="ttdeci">typename std::iterator_traits< Iterator >::value_type value_type</div><div class="ttdef"><b>Definition:</b> <a href="iterators_8h_source.html#l00041">iterators.h:41</a></div></div>
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