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199 lines
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<div class="headertitle"><div class="title">math_opt_proto_utils.cc</div></div>
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<a href="math__opt__proto__utils_8cc.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// Copyright 2010-2021 Google LLC</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div>
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<div class="line"><a id="l00003" 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>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// You may obtain a copy of the License at</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">//</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment">// See the License for the specific language governing permissions and</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment">// limitations under the License.</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include "<a class="code" href="math__opt__proto__utils_8h.html">ortools/math_opt/core/math_opt_proto_utils.h</a>"</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include <stdint.h></span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> </div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include <algorithm></span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <functional></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include "<a class="code" href="integral__types_8h.html">ortools/base/integral_types.h</a>"</span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include "<a class="code" href="base_2logging_8h.html">ortools/base/logging.h</a>"</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include "absl/container/flat_hash_set.h"</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include "ortools/math_opt/callback.pb.h"</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include "<a class="code" href="sparse__vector__view_8h.html">ortools/math_opt/core/sparse_vector_view.h</a>"</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include "ortools/math_opt/sparse_containers.pb.h"</span></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="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="keyword">namespace </span>math_opt {</div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> </div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#af649365c28596912460bb9375e377b63"> 31</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#af649365c28596912460bb9375e377b63">RemoveSparseDoubleVectorZeros</a>(SparseDoubleVectorProto& sparse_vector) {</div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <a class="code hl_define" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(sparse_vector.ids_size(), sparse_vector.values_size());</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// Keep track of the next index that has not yet been used for a non zero</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// value.</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a> = 0;</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span> [<span class="keywordtype">id</span>, <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>] : <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#a80e158d48db32a3bbbe915179b36e405">MakeView</a>(sparse_vector)) {</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// Se use `!(== 0.0)` here so that we keep NaN values for which both `v ==</span></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// 0` and `v != 0` returns false.</span></div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="keywordflow">if</span> (!(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> == 0.0)) {</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> sparse_vector.set_ids(<a class="code hl_variable" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a>, <span class="keywordtype">id</span>);</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> sparse_vector.set_values(<a class="code hl_variable" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a>, <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> ++<a class="code hl_variable" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a>;</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> }</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> }</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="comment">// At the end of the iteration, `next` contains the index of the first unused</span></div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// index. This means it contains the number of used elements.</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> sparse_vector.mutable_ids()->Truncate(<a class="code hl_variable" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a>);</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> sparse_vector.mutable_values()->Truncate(<a class="code hl_variable" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a>);</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span>}</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"><a class="line" href="classoperations__research_1_1math__opt_1_1_sparse_vector_filter_predicate.html#a4b629c158cb9a96810d39b72b3a2a587"> 51</a></span><a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_sparse_vector_filter_predicate.html#a4b629c158cb9a96810d39b72b3a2a587">SparseVectorFilterPredicate::SparseVectorFilterPredicate</a>(</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">const</span> SparseVectorFilterProto& filter)</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> : filter_(filter) {</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="comment">// We only do this test in non-optimized builds.</span></div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="macros_8h.html#a7f536a3b33f9bed8f75734e035d30725">DEBUG_MODE</a> && filter_.filter_by_ids()) {</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// Checks that input filtered_ids are strictly increasing.</span></div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="comment">// That is: for all i, ids(i) < ids(i+1).</span></div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="comment">// Hence here we fail if there exists i such that ids(i) >= ids(i+1).</span></div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">const</span> <span class="keyword">auto</span>& ids = filter_.filtered_ids();</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <a class="code hl_define" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(std::adjacent_find(ids.begin(), ids.end(),</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> std::greater_equal<int64_t>()) == ids.end())</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> << <span class="stringliteral">"The input filter.filtered_ids must be strictly increasing."</span>;</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> }</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span>}</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#af457f60ebac293554106c3ee3898607e"> 66</a></span>absl::flat_hash_set<CallbackEventProto> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#af457f60ebac293554106c3ee3898607e">EventSet</a>(</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keyword">const</span> CallbackRegistrationProto& callback_registration) {</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// Here we don't use for-range loop since for repeated enum fields, the type</span></div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// used in C++ is RepeatedField<int>. Using the generated getter instead</span></div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// guarantees type safety.</span></div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> absl::flat_hash_set<CallbackEventProto> events;</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < callback_registration.request_registration_size(); ++i) {</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> events.emplace(callback_registration.request_registration(i));</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> }</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">return</span> events;</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span>}</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> </div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span>} <span class="comment">// namespace math_opt</span></div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span>} <span class="comment">// namespace operations_research</span></div>
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<div class="ttc" id="abase_2logging_8h_html"><div class="ttname"><a href="base_2logging_8h.html">logging.h</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a3e1cfef60e774a81f30eaddf26a3a274"><div class="ttname"><a href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a></div><div class="ttdeci">#define CHECK(condition)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00492">base/logging.h:492</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a7c0ce053b28d53aa4eaf3eb7fb71663b"><div class="ttname"><a href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a></div><div class="ttdeci">#define CHECK_EQ(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00699">base/logging.h:699</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_sparse_vector_filter_predicate_html_a4b629c158cb9a96810d39b72b3a2a587"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_sparse_vector_filter_predicate.html#a4b629c158cb9a96810d39b72b3a2a587">operations_research::math_opt::SparseVectorFilterPredicate::SparseVectorFilterPredicate</a></div><div class="ttdeci">SparseVectorFilterPredicate(const SparseVectorFilterProto &filter)</div><div class="ttdef"><b>Definition:</b> <a href="math__opt__proto__utils_8cc_source.html#l00051">math_opt_proto_utils.cc:51</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_a80e158d48db32a3bbbe915179b36e405"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#a80e158d48db32a3bbbe915179b36e405">operations_research::math_opt::MakeView</a></div><div class="ttdeci">SparseVectorView< T > MakeView(absl::Span< const int64_t > ids, const Collection &values)</div><div class="ttdef"><b>Definition:</b> <a href="sparse__vector__view_8h_source.html#l00140">sparse_vector_view.h:140</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_af457f60ebac293554106c3ee3898607e"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#af457f60ebac293554106c3ee3898607e">operations_research::math_opt::EventSet</a></div><div class="ttdeci">absl::flat_hash_set< CallbackEventProto > EventSet(const CallbackRegistrationProto &callback_registration)</div><div class="ttdef"><b>Definition:</b> <a href="math__opt__proto__utils_8cc_source.html#l00066">math_opt_proto_utils.cc:66</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_af649365c28596912460bb9375e377b63"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#af649365c28596912460bb9375e377b63">operations_research::math_opt::RemoveSparseDoubleVectorZeros</a></div><div class="ttdeci">void RemoveSparseDoubleVectorZeros(SparseDoubleVectorProto &sparse_vector)</div><div class="ttdef"><b>Definition:</b> <a href="math__opt__proto__utils_8cc_source.html#l00031">math_opt_proto_utils.cc:31</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_html"><div class="ttname"><a href="namespaceoperations__research.html">operations_research</a></div><div class="ttdoc">Collection of objects used to extend the Constraint Solver library.</div><div class="ttdef"><b>Definition:</b> <a href="dense__doubly__linked__list_8h_source.html#l00021">dense_doubly_linked_list.h:21</a></div></div>
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