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ortools-clone/docs/cpp/classoperations__research_1_1LocalSearchOperator.html
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">LocalSearchOperator<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>The base class for all local search operators. </p>
<p>A local search operator is an object that defines the neighborhood of a solution. In other words, a neighborhood is the set of solutions which can be reached from a given solution using an operator.</p>
<p>The behavior of the <a class="el" href="classoperations__research_1_1LocalSearchOperator.html" title="The base class for all local search operators.">LocalSearchOperator</a> class is similar to iterators. The operator is synchronized with an assignment (gives the current values of the variables); this is done in the <a class="el" href="classoperations__research_1_1LocalSearchOperator.html#ae8505ab0739cf0b585de5844f7a6703c">Start()</a> method.</p>
<p>Then one can iterate over the neighbors using the MakeNextNeighbor method. This method returns an assignment which represents the incremental changes to the current solution. It also returns a second assignment representing the changes to the last solution defined by the neighborhood operator; this assignment is empty if the neighborhood operator cannot track this information. </p>
<p class="definition">Definition at line <a class="el" href="constraint__solveri_8h_source.html#l00805">805</a> of file <a class="el" href="constraint__solveri_8h_source.html">constraint_solveri.h</a>.</p>
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Public Member Functions</h2></td></tr>
<tr class="memitem:aabe1b807361b63e2f00ba8256542a818"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1LocalSearchOperator.html#aabe1b807361b63e2f00ba8256542a818">LocalSearchOperator</a> ()</td></tr>
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<tr class="memitem:af48018bea65b9825579c53e834c8131c"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1LocalSearchOperator.html#af48018bea65b9825579c53e834c8131c">~LocalSearchOperator</a> () override</td></tr>
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<tr class="memitem:a9bd1712271364632b22009ef10eb2172"><td class="memItemLeft" align="right" valign="top">virtual bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1LocalSearchOperator.html#a9bd1712271364632b22009ef10eb2172">MakeNextNeighbor</a> (Assignment *<a class="el" href="resource_8cc.html#a73461c37822b6ebb75b54ba1a9ffb442">delta</a>, Assignment *deltadelta)=0</td></tr>
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<tr class="memitem:ae8505ab0739cf0b585de5844f7a6703c"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1LocalSearchOperator.html#ae8505ab0739cf0b585de5844f7a6703c">Start</a> (const Assignment *assignment)=0</td></tr>
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<tr class="memitem:a4c4ba0ffe635d14b93794268bd8e5995"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1LocalSearchOperator.html#a4c4ba0ffe635d14b93794268bd8e5995">Reset</a> ()</td></tr>
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<tr class="memitem:a2030c5ed835cf4196e8cab0033a6d7bd"><td class="memItemLeft" align="right" valign="top">virtual const <a class="el" href="classoperations__research_1_1LocalSearchOperator.html">LocalSearchOperator</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1LocalSearchOperator.html#a2030c5ed835cf4196e8cab0033a6d7bd">Self</a> () const</td></tr>
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<tr class="memitem:a1b0063f805d92ed061848616d08f4664"><td class="memItemLeft" align="right" valign="top">virtual bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1LocalSearchOperator.html#a1b0063f805d92ed061848616d08f4664">HasFragments</a> () const</td></tr>
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<tr class="memitem:a1e1cf9d9c4228f22482c4ee6c58951a8"><td class="memItemLeft" align="right" valign="top">virtual bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1LocalSearchOperator.html#a1e1cf9d9c4228f22482c4ee6c58951a8">HoldsDelta</a> () const</td></tr>
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<h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#aabe1b807361b63e2f00ba8256542a818">&#9670;&nbsp;</a></span>LocalSearchOperator()</h2>
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<td class="memname"><a class="el" href="classoperations__research_1_1LocalSearchOperator.html">LocalSearchOperator</a> </td>
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<p class="definition">Definition at line <a class="el" href="constraint__solveri_8h_source.html#l00807">807</a> of file <a class="el" href="constraint__solveri_8h_source.html">constraint_solveri.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#af48018bea65b9825579c53e834c8131c">&#9670;&nbsp;</a></span>~LocalSearchOperator()</h2>
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<td class="memname">~<a class="el" href="classoperations__research_1_1LocalSearchOperator.html">LocalSearchOperator</a> </td>
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<p class="definition">Definition at line <a class="el" href="constraint__solveri_8h_source.html#l00808">808</a> of file <a class="el" href="constraint__solveri_8h_source.html">constraint_solveri.h</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a1b0063f805d92ed061848616d08f4664">&#9670;&nbsp;</a></span>HasFragments()</h2>
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<td class="memname">virtual bool HasFragments </td>
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<p>Reimplemented in <a class="el" href="classoperations__research_1_1PathLns.html#a4c069642a869d9055609c7eac7078f8c">PathLns</a>, <a class="el" href="classoperations__research_1_1BaseLns.html#a4c069642a869d9055609c7eac7078f8c">BaseLns</a>, <a class="el" href="classSwigDirector__PathOperator.html#a1c43e22699ec4dff03195005615b0ee6">SwigDirector_PathOperator</a>, <a class="el" href="classSwigDirector__ChangeValue.html#a1c43e22699ec4dff03195005615b0ee6">SwigDirector_ChangeValue</a>, <a class="el" href="classSwigDirector__BaseLns.html#a1c43e22699ec4dff03195005615b0ee6">SwigDirector_BaseLns</a>, <a class="el" href="classSwigDirector__SequenceVarLocalSearchOperator.html#a1c43e22699ec4dff03195005615b0ee6">SwigDirector_SequenceVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__IntVarLocalSearchOperator.html#a1c43e22699ec4dff03195005615b0ee6">SwigDirector_IntVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__LocalSearchOperator.html#a1c43e22699ec4dff03195005615b0ee6">SwigDirector_LocalSearchOperator</a>, <a class="el" href="classSwigDirector__ChangeValue.html#a1b0063f805d92ed061848616d08f4664">SwigDirector_ChangeValue</a>, <a class="el" href="classSwigDirector__BaseLns.html#a1b0063f805d92ed061848616d08f4664">SwigDirector_BaseLns</a>, <a class="el" href="classSwigDirector__IntVarLocalSearchOperator.html#a1b0063f805d92ed061848616d08f4664">SwigDirector_IntVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__LocalSearchOperator.html#a1b0063f805d92ed061848616d08f4664">SwigDirector_LocalSearchOperator</a>, <a class="el" href="classSwigDirector__PathOperator.html#a1b0063f805d92ed061848616d08f4664">SwigDirector_PathOperator</a>, <a class="el" href="classSwigDirector__ChangeValue.html#a1b0063f805d92ed061848616d08f4664">SwigDirector_ChangeValue</a>, <a class="el" href="classSwigDirector__BaseLns.html#a1b0063f805d92ed061848616d08f4664">SwigDirector_BaseLns</a>, <a class="el" href="classSwigDirector__SequenceVarLocalSearchOperator.html#a1b0063f805d92ed061848616d08f4664">SwigDirector_SequenceVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__IntVarLocalSearchOperator.html#a1b0063f805d92ed061848616d08f4664">SwigDirector_IntVarLocalSearchOperator</a>, and <a class="el" href="classSwigDirector__LocalSearchOperator.html#a1b0063f805d92ed061848616d08f4664">SwigDirector_LocalSearchOperator</a>.</p>
<p class="definition">Definition at line <a class="el" href="constraint__solveri_8h_source.html#l00815">815</a> of file <a class="el" href="constraint__solveri_8h_source.html">constraint_solveri.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a1e1cf9d9c4228f22482c4ee6c58951a8">&#9670;&nbsp;</a></span>HoldsDelta()</h2>
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<p>Reimplemented in <a class="el" href="classoperations__research_1_1NeighborhoodLimit.html#a35de616bef50b1661e3133761f7260e1">NeighborhoodLimit</a>, <a class="el" href="classoperations__research_1_1VarLocalSearchOperator.html#a35de616bef50b1661e3133761f7260e1">VarLocalSearchOperator&lt; V, Val, Handler &gt;</a>, <a class="el" href="classSwigDirector__PathOperator.html#a0f13404d57183b4dac8f069f6881e62d">SwigDirector_PathOperator</a>, <a class="el" href="classSwigDirector__ChangeValue.html#a0f13404d57183b4dac8f069f6881e62d">SwigDirector_ChangeValue</a>, <a class="el" href="classSwigDirector__BaseLns.html#a0f13404d57183b4dac8f069f6881e62d">SwigDirector_BaseLns</a>, <a class="el" href="classSwigDirector__SequenceVarLocalSearchOperator.html#a0f13404d57183b4dac8f069f6881e62d">SwigDirector_SequenceVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__IntVarLocalSearchOperator.html#a0f13404d57183b4dac8f069f6881e62d">SwigDirector_IntVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__LocalSearchOperator.html#a0f13404d57183b4dac8f069f6881e62d">SwigDirector_LocalSearchOperator</a>, <a class="el" href="classSwigDirector__ChangeValue.html#a1e1cf9d9c4228f22482c4ee6c58951a8">SwigDirector_ChangeValue</a>, <a class="el" href="classSwigDirector__BaseLns.html#a1e1cf9d9c4228f22482c4ee6c58951a8">SwigDirector_BaseLns</a>, <a class="el" href="classSwigDirector__IntVarLocalSearchOperator.html#a1e1cf9d9c4228f22482c4ee6c58951a8">SwigDirector_IntVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__LocalSearchOperator.html#a1e1cf9d9c4228f22482c4ee6c58951a8">SwigDirector_LocalSearchOperator</a>, <a class="el" href="classSwigDirector__PathOperator.html#a1e1cf9d9c4228f22482c4ee6c58951a8">SwigDirector_PathOperator</a>, <a class="el" href="classSwigDirector__ChangeValue.html#a1e1cf9d9c4228f22482c4ee6c58951a8">SwigDirector_ChangeValue</a>, <a class="el" href="classSwigDirector__BaseLns.html#a1e1cf9d9c4228f22482c4ee6c58951a8">SwigDirector_BaseLns</a>, <a class="el" href="classSwigDirector__SequenceVarLocalSearchOperator.html#a1e1cf9d9c4228f22482c4ee6c58951a8">SwigDirector_SequenceVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__IntVarLocalSearchOperator.html#a1e1cf9d9c4228f22482c4ee6c58951a8">SwigDirector_IntVarLocalSearchOperator</a>, and <a class="el" href="classSwigDirector__LocalSearchOperator.html#a1e1cf9d9c4228f22482c4ee6c58951a8">SwigDirector_LocalSearchOperator</a>.</p>
<p class="definition">Definition at line <a class="el" href="constraint__solveri_8h_source.html#l00816">816</a> of file <a class="el" href="constraint__solveri_8h_source.html">constraint_solveri.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9bd1712271364632b22009ef10eb2172">&#9670;&nbsp;</a></span>MakeNextNeighbor()</h2>
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<p>Implemented in <a class="el" href="classoperations__research_1_1NeighborhoodLimit.html#a2b47576627076cc054924a89a08f69a6">NeighborhoodLimit</a>, <a class="el" href="classoperations__research_1_1IntVarLocalSearchOperator.html#a2b47576627076cc054924a89a08f69a6">IntVarLocalSearchOperator</a>, <a class="el" href="classoperations__research_1_1PairNodeSwapActiveOperator.html#a2b47576627076cc054924a89a08f69a6">PairNodeSwapActiveOperator&lt; swap_first &gt;</a>, <a class="el" href="classoperations__research_1_1IndexPairSwapActiveOperator.html#a2b47576627076cc054924a89a08f69a6">IndexPairSwapActiveOperator</a>, and <a class="el" href="classoperations__research_1_1SwapIndexPairOperator.html#a2b47576627076cc054924a89a08f69a6">SwapIndexPairOperator</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a4c4ba0ffe635d14b93794268bd8e5995">&#9670;&nbsp;</a></span>Reset()</h2>
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<p>Reimplemented in <a class="el" href="classoperations__research_1_1PathOperator.html#af82f4acaed7bb39d568e689a9caa63d5">PathOperator</a>, <a class="el" href="classSwigDirector__PathOperator.html#a372de693ad40b3f42839c8ec6ac845f4">SwigDirector_PathOperator</a>, <a class="el" href="classSwigDirector__ChangeValue.html#a372de693ad40b3f42839c8ec6ac845f4">SwigDirector_ChangeValue</a>, <a class="el" href="classSwigDirector__BaseLns.html#a372de693ad40b3f42839c8ec6ac845f4">SwigDirector_BaseLns</a>, <a class="el" href="classSwigDirector__SequenceVarLocalSearchOperator.html#a372de693ad40b3f42839c8ec6ac845f4">SwigDirector_SequenceVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__IntVarLocalSearchOperator.html#a372de693ad40b3f42839c8ec6ac845f4">SwigDirector_IntVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__LocalSearchOperator.html#a372de693ad40b3f42839c8ec6ac845f4">SwigDirector_LocalSearchOperator</a>, <a class="el" href="classSwigDirector__ChangeValue.html#a4c4ba0ffe635d14b93794268bd8e5995">SwigDirector_ChangeValue</a>, <a class="el" href="classSwigDirector__BaseLns.html#a4c4ba0ffe635d14b93794268bd8e5995">SwigDirector_BaseLns</a>, <a class="el" href="classSwigDirector__IntVarLocalSearchOperator.html#a4c4ba0ffe635d14b93794268bd8e5995">SwigDirector_IntVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__LocalSearchOperator.html#a4c4ba0ffe635d14b93794268bd8e5995">SwigDirector_LocalSearchOperator</a>, <a class="el" href="classSwigDirector__PathOperator.html#a4c4ba0ffe635d14b93794268bd8e5995">SwigDirector_PathOperator</a>, <a class="el" href="classSwigDirector__ChangeValue.html#a4c4ba0ffe635d14b93794268bd8e5995">SwigDirector_ChangeValue</a>, <a class="el" href="classSwigDirector__BaseLns.html#a4c4ba0ffe635d14b93794268bd8e5995">SwigDirector_BaseLns</a>, <a class="el" href="classSwigDirector__SequenceVarLocalSearchOperator.html#a4c4ba0ffe635d14b93794268bd8e5995">SwigDirector_SequenceVarLocalSearchOperator</a>, <a class="el" href="classSwigDirector__IntVarLocalSearchOperator.html#a4c4ba0ffe635d14b93794268bd8e5995">SwigDirector_IntVarLocalSearchOperator</a>, and <a class="el" href="classSwigDirector__LocalSearchOperator.html#a4c4ba0ffe635d14b93794268bd8e5995">SwigDirector_LocalSearchOperator</a>.</p>
<p class="definition">Definition at line <a class="el" href="constraint__solveri_8h_source.html#l00811">811</a> of file <a class="el" href="constraint__solveri_8h_source.html">constraint_solveri.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a2030c5ed835cf4196e8cab0033a6d7bd">&#9670;&nbsp;</a></span>Self()</h2>
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<td class="memname">virtual const <a class="el" href="classoperations__research_1_1LocalSearchOperator.html">LocalSearchOperator</a>* Self </td>
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<p class="definition">Definition at line <a class="el" href="constraint__solveri_8h_source.html#l00813">813</a> of file <a class="el" href="constraint__solveri_8h_source.html">constraint_solveri.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae8505ab0739cf0b585de5844f7a6703c">&#9670;&nbsp;</a></span>Start()</h2>
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<td class="memname">virtual void Start </td>
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<td class="paramtype">const Assignment *&#160;</td>
<td class="paramname"><em>assignment</em></td><td>)</td>
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<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>Implemented in <a class="el" href="classoperations__research_1_1NeighborhoodLimit.html#aeacffb05338262fd232dc77fed8cc586">NeighborhoodLimit</a>, <a class="el" href="classoperations__research_1_1VarLocalSearchOperator.html#aeacffb05338262fd232dc77fed8cc586">VarLocalSearchOperator&lt; V, Val, Handler &gt;</a>, and <a class="el" href="classoperations__research_1_1VarLocalSearchOperator.html#aeacffb05338262fd232dc77fed8cc586">VarLocalSearchOperator&lt; IntVar, int64, IntVarLocalSearchHandler &gt;</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="constraint__solveri_8h_source.html">constraint_solveri.h</a></li>
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