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<h2>C++ Reference</h2>
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<h1 style="color: #145A32;">C++ Reference: Routing</h1>
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<li class="navelem"><a class="el" href="namespaceoperations__research.html">operations_research</a></li><li class="navelem"><a class="el" href="classoperations__research_1_1LocalSearchOperator.html">LocalSearchOperator</a></li> </ul>
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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> (<a class="el" href="classoperations__research_1_1Assignment.html">Assignment</a> *delta, <a class="el" href="classoperations__research_1_1Assignment.html">Assignment</a> *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 <a class="el" href="classoperations__research_1_1Assignment.html">Assignment</a> *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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<tr class="memitem:a8eba5d533fa9df4617c1868d3ec2afc4"><td class="memItemLeft" align="right" valign="top">virtual std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1BaseObject.html#a8eba5d533fa9df4617c1868d3ec2afc4">DebugString</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="#a8eba5d533fa9df4617c1868d3ec2afc4">&#9670;&nbsp;</a></span>DebugString()</h2>
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<td class="memname">virtual std::string DebugString </td>
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<p>Reimplemented in <a class="el" href="classoperations__research_1_1Pack.html#aed804747c45a7e1caf81461f9e45dd91">Pack</a>, <a class="el" href="classoperations__research_1_1Assignment.html#aed804747c45a7e1caf81461f9e45dd91">Assignment</a>, <a class="el" href="classoperations__research_1_1SequenceVar.html#aed804747c45a7e1caf81461f9e45dd91">SequenceVar</a>, <a class="el" href="classoperations__research_1_1RegularLimit.html#aed804747c45a7e1caf81461f9e45dd91">RegularLimit</a>, <a class="el" href="classoperations__research_1_1SearchLimit.html#aed804747c45a7e1caf81461f9e45dd91">SearchLimit</a>, <a class="el" href="classoperations__research_1_1OptimizeVar.html#aed804747c45a7e1caf81461f9e45dd91">OptimizeVar</a>, <a class="el" href="classoperations__research_1_1SolutionCollector.html#aed804747c45a7e1caf81461f9e45dd91">SolutionCollector</a>, <a class="el" href="classoperations__research_1_1IntVarIterator.html#aed804747c45a7e1caf81461f9e45dd91">IntVarIterator</a>, <a class="el" href="classoperations__research_1_1CPFeasibilityFilter.html#aed804747c45a7e1caf81461f9e45dd91">CPFeasibilityFilter</a>, <a class="el" href="classoperations__research_1_1Constraint.html#aed804747c45a7e1caf81461f9e45dd91">Constraint</a>, <a class="el" href="classoperations__research_1_1Demon.html#aed804747c45a7e1caf81461f9e45dd91">Demon</a>, <a class="el" href="classoperations__research_1_1DecisionBuilder.html#aed804747c45a7e1caf81461f9e45dd91">DecisionBuilder</a>, <a class="el" href="classoperations__research_1_1Decision.html#aed804747c45a7e1caf81461f9e45dd91">Decision</a>, <a class="el" href="classoperations__research_1_1PropagationBaseObject.html#aed804747c45a7e1caf81461f9e45dd91">PropagationBaseObject</a>, <a class="el" href="classoperations__research_1_1IntVarFilteredDecisionBuilder.html#aed804747c45a7e1caf81461f9e45dd91">IntVarFilteredDecisionBuilder</a>, <a class="el" href="classoperations__research_1_1ArrayWithOffset.html#aed804747c45a7e1caf81461f9e45dd91">ArrayWithOffset&lt; T &gt;</a>, <a class="el" href="classoperations__research_1_1SearchLog.html#aed804747c45a7e1caf81461f9e45dd91">SearchLog</a>, <a class="el" href="classoperations__research_1_1BooleanVar.html#aed804747c45a7e1caf81461f9e45dd91">BooleanVar</a>, <a class="el" href="classoperations__research_1_1LocalSearchMonitor.html#aed804747c45a7e1caf81461f9e45dd91">LocalSearchMonitor</a>, <a class="el" href="classoperations__research_1_1GlobalVehicleBreaksConstraint.html#aed804747c45a7e1caf81461f9e45dd91">GlobalVehicleBreaksConstraint</a>, <a class="el" href="classoperations__research_1_1PropagationMonitor.html#aed804747c45a7e1caf81461f9e45dd91">PropagationMonitor</a>, <a class="el" href="classoperations__research_1_1LocalSearchFilterManager.html#aed804747c45a7e1caf81461f9e45dd91">LocalSearchFilterManager</a>, <a class="el" href="classoperations__research_1_1DelayedCallMethod2.html#aed804747c45a7e1caf81461f9e45dd91">DelayedCallMethod2&lt; T, P, Q &gt;</a>, <a class="el" href="classoperations__research_1_1DelayedCallMethod1.html#aed804747c45a7e1caf81461f9e45dd91">DelayedCallMethod1&lt; T, P &gt;</a>, <a class="el" href="classoperations__research_1_1DelayedCallMethod0.html#aed804747c45a7e1caf81461f9e45dd91">DelayedCallMethod0&lt; T &gt;</a>, <a class="el" href="classoperations__research_1_1ExchangeSubtrip.html#aed804747c45a7e1caf81461f9e45dd91">ExchangeSubtrip</a>, <a class="el" href="classoperations__research_1_1CallMethod3.html#aed804747c45a7e1caf81461f9e45dd91">CallMethod3&lt; T, P, Q, R &gt;</a>, <a class="el" href="classoperations__research_1_1RelocateSubtrip.html#aed804747c45a7e1caf81461f9e45dd91">RelocateSubtrip</a>, <a class="el" href="classoperations__research_1_1CallMethod2.html#aed804747c45a7e1caf81461f9e45dd91">CallMethod2&lt; T, P, Q &gt;</a>, <a class="el" href="classoperations__research_1_1CallMethod1.html#aed804747c45a7e1caf81461f9e45dd91">CallMethod1&lt; T, P &gt;</a>, <a class="el" href="classoperations__research_1_1CallMethod0.html#aed804747c45a7e1caf81461f9e45dd91">CallMethod0&lt; T &gt;</a>, <a class="el" href="classoperations__research_1_1PairNodeSwapActiveOperator.html#aed804747c45a7e1caf81461f9e45dd91">PairNodeSwapActiveOperator&lt; swap_first &gt;</a>, <a class="el" href="classoperations__research_1_1RelocateExpensiveChain.html#aed804747c45a7e1caf81461f9e45dd91">RelocateExpensiveChain</a>, <a class="el" href="classoperations__research_1_1FilteredHeuristicExpensiveChainLNSOperator.html#aed804747c45a7e1caf81461f9e45dd91">FilteredHeuristicExpensiveChainLNSOperator</a>, <a class="el" href="classoperations__research_1_1FilteredHeuristicPathLNSOperator.html#aed804747c45a7e1caf81461f9e45dd91">FilteredHeuristicPathLNSOperator</a>, <a class="el" href="classoperations__research_1_1IndexPairSwapActiveOperator.html#aed804747c45a7e1caf81461f9e45dd91">IndexPairSwapActiveOperator</a>, <a class="el" href="classoperations__research_1_1SwapIndexPairOperator.html#aed804747c45a7e1caf81461f9e45dd91">SwapIndexPairOperator</a>, <a class="el" href="classoperations__research_1_1PairExchangeRelocateOperator.html#aed804747c45a7e1caf81461f9e45dd91">PairExchangeRelocateOperator</a>, <a class="el" href="classoperations__research_1_1PairExchangeOperator.html#aed804747c45a7e1caf81461f9e45dd91">PairExchangeOperator</a>, <a class="el" href="classoperations__research_1_1LightPairRelocateOperator.html#aed804747c45a7e1caf81461f9e45dd91">LightPairRelocateOperator</a>, <a class="el" href="classoperations__research_1_1PairRelocateOperator.html#aed804747c45a7e1caf81461f9e45dd91">PairRelocateOperator</a>, <a class="el" href="classoperations__research_1_1MakePairInactiveOperator.html#aed804747c45a7e1caf81461f9e45dd91">MakePairInactiveOperator</a>, <a class="el" href="classoperations__research_1_1MakePairActiveOperator.html#aed804747c45a7e1caf81461f9e45dd91">MakePairActiveOperator</a>, and <a class="el" href="classoperations__research_1_1MakeRelocateNeighborsOperator.html#aed804747c45a7e1caf81461f9e45dd91">MakeRelocateNeighborsOperator</a>.</p>
<p class="definition">Definition at line <a class="el" href="constraint__solver_8h_source.html#l03108">3108</a> of file <a class="el" href="constraint__solver_8h_source.html">constraint_solver.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a1b0063f805d92ed061848616d08f4664">&#9670;&nbsp;</a></span>HasFragments()</h2>
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<p>Reimplemented in <a class="el" href="classoperations__research_1_1BaseLns.html#a4c069642a869d9055609c7eac7078f8c">BaseLns</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_1VarLocalSearchOperator.html#a35de616bef50b1661e3133761f7260e1">VarLocalSearchOperator&lt; V, Val, Handler &gt;</a>, and <a class="el" href="classoperations__research_1_1VarLocalSearchOperator.html#a35de616bef50b1661e3133761f7260e1">VarLocalSearchOperator&lt; IntVar, int64, IntVarLocalSearchHandler &gt;</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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<td class="memname">virtual bool MakeNextNeighbor </td>
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<p>Implemented in <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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<td class="memname">virtual void Reset </td>
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<p>Reimplemented in <a class="el" href="classoperations__research_1_1PathOperator.html#af82f4acaed7bb39d568e689a9caa63d5">PathOperator</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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<p>Implemented in <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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