291 lines
34 KiB
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291 lines
34 KiB
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="nested-classes" name="nested-classes"></a>
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Classes</h2></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structoperations__research_1_1_default_phase_parameters.html">DefaultPhaseParameters</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">This struct holds all parameters for the default search. <a href="structoperations__research_1_1_default_phase_parameters.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_solver.html">Solver</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="classoperations__research_1_1_solver.html" title="Solver Class.">Solver</a> Class. <a href="classoperations__research_1_1_solver.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structoperations__research_1_1_solver_1_1_integer_cast_info.html">Solver::IntegerCastInfo</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Holds semantic information stating that the 'expression' has been cast into 'variable' using the Var() method, and that 'maintainer' is responsible for maintaining the equality between 'variable' and 'expression'. <a href="structoperations__research_1_1_solver_1_1_integer_cast_info.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structoperations__research_1_1_solver_1_1_search_log_parameters.html">Solver::SearchLogParameters</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Creates a search monitor from logging parameters. <a href="structoperations__research_1_1_solver_1_1_search_log_parameters.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_base_object.html">BaseObject</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">A <a class="el" href="classoperations__research_1_1_base_object.html" title="A BaseObject is the root of all reversibly allocated objects.">BaseObject</a> is the root of all reversibly allocated objects. <a href="classoperations__research_1_1_base_object.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_propagation_base_object.html">PropagationBaseObject</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">NOLINT. <a href="classoperations__research_1_1_propagation_base_object.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_decision.html">Decision</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">A <a class="el" href="classoperations__research_1_1_decision.html" title="A Decision represents a choice point in the search tree.">Decision</a> represents a choice point in the search tree. <a href="classoperations__research_1_1_decision.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_decision_visitor.html">DecisionVisitor</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">A <a class="el" href="classoperations__research_1_1_decision_visitor.html" title="A DecisionVisitor is used to inspect a decision.">DecisionVisitor</a> is used to inspect a decision. <a href="classoperations__research_1_1_decision_visitor.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_decision_builder.html">DecisionBuilder</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">A <a class="el" href="classoperations__research_1_1_decision_builder.html" title="A DecisionBuilder is responsible for creating the search tree.">DecisionBuilder</a> is responsible for creating the search tree. <a href="classoperations__research_1_1_decision_builder.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_profiled_decision_builder.html">ProfiledDecisionBuilder</a></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_demon.html">Demon</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">A <a class="el" href="classoperations__research_1_1_demon.html" title="A Demon is the base element of a propagation queue.">Demon</a> is the base element of a propagation queue. <a href="classoperations__research_1_1_demon.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_model_visitor.html">ModelVisitor</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Model visitor. <a href="classoperations__research_1_1_model_visitor.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_constraint.html">Constraint</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">A constraint is the main modeling object. <a href="classoperations__research_1_1_constraint.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_cast_constraint.html">CastConstraint</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Cast constraints are special channeling constraints designed to keep a variable in sync with an expression. <a href="classoperations__research_1_1_cast_constraint.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_search_monitor.html">SearchMonitor</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">A search monitor is a simple set of callbacks to monitor all search events. <a href="classoperations__research_1_1_search_monitor.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_rev.html">Rev< T ></a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">This class adds reversibility to a POD type. <a href="classoperations__research_1_1_rev.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_numerical_rev.html">NumericalRev< T ></a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Subclass of Rev<T> which adds numerical operations. <a href="classoperations__research_1_1_numerical_rev.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_rev_array.html">RevArray< T ></a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Reversible array of POD types. <a href="classoperations__research_1_1_rev_array.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_numerical_rev_array.html">NumericalRevArray< T ></a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Subclass of RevArray<T> which adds numerical operations. <a href="classoperations__research_1_1_numerical_rev_array.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_int_expr.html">IntExpr</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">The class <a class="el" href="classoperations__research_1_1_int_expr.html" title="The class IntExpr is the base of all integer expressions in constraint programming.">IntExpr</a> is the base of all integer expressions in constraint programming. <a href="classoperations__research_1_1_int_expr.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_int_var_iterator.html">IntVarIterator</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">The class Iterator has two direct subclasses. <a href="classoperations__research_1_1_int_var_iterator.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_init_and_get_values.html">InitAndGetValues</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Utility class to encapsulate an <a class="el" href="classoperations__research_1_1_int_var_iterator.html" title="The class Iterator has two direct subclasses.">IntVarIterator</a> and use it in a range-based loop. <a href="classoperations__research_1_1_init_and_get_values.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structoperations__research_1_1_init_and_get_values_1_1_iterator.html">InitAndGetValues::Iterator</a></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_int_var.html">IntVar</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">The class <a class="el" href="classoperations__research_1_1_int_var.html" title="The class IntVar is a subset of IntExpr.">IntVar</a> is a subset of <a class="el" href="classoperations__research_1_1_int_expr.html" title="The class IntExpr is the base of all integer expressions in constraint programming.">IntExpr</a>. <a href="classoperations__research_1_1_int_var.html#details">More...</a><br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_solution_collector.html">SolutionCollector</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">This class is the root class of all solution collectors. <a href="classoperations__research_1_1_solution_collector.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structoperations__research_1_1_solution_collector_1_1_solution_data.html">SolutionCollector::SolutionData</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_optimize_var.html">OptimizeVar</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">This class encapsulates an objective. <a href="classoperations__research_1_1_optimize_var.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_search_limit.html">SearchLimit</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Base class of all search limits. <a href="classoperations__research_1_1_search_limit.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_regular_limit.html">RegularLimit</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Usual limit based on wall_time, number of explored branches and number of failures in the search tree. <a href="classoperations__research_1_1_regular_limit.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_improvement_search_limit.html">ImprovementSearchLimit</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_interval_var.html">IntervalVar</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Interval variables are often used in scheduling. <a href="classoperations__research_1_1_interval_var.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_sequence_var.html">SequenceVar</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">A sequence variable is a variable whose domain is a set of possible orderings of the interval variables. <a href="classoperations__research_1_1_sequence_var.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_assignment_element.html">AssignmentElement</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_int_var_element.html">IntVarElement</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_interval_var_element.html">IntervalVarElement</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_sequence_var_element.html">SequenceVarElement</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">The <a class="el" href="classoperations__research_1_1_sequence_var_element.html" title="The SequenceVarElement stores a partial representation of ranked interval variables in the underlying...">SequenceVarElement</a> stores a partial representation of ranked interval variables in the underlying sequence variable. <a href="classoperations__research_1_1_sequence_var_element.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_assignment_container.html">AssignmentContainer< V, E ></a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_assignment.html">Assignment</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">An <a class="el" href="classoperations__research_1_1_assignment.html" title="An Assignment is a variable -> domains mapping, used to report solutions to the user.">Assignment</a> is a variable -> domains mapping, used to report solutions to the user. <a href="classoperations__research_1_1_assignment.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_pack.html">Pack</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_disjunctive_constraint.html">DisjunctiveConstraint</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classoperations__research_1_1_solution_pool.html">SolutionPool</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">This class is used to manage a pool of solutions. <a href="classoperations__research_1_1_solution_pool.html#details">More...</a><br /></td></tr>
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Namespaces</h2></td></tr>
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<tr class="memitem:namespaceoperations__research"><td class="memItemLeft" align="right" valign="top">namespace  </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceoperations__research.html">operations_research</a></td></tr>
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<tr class="memdesc:namespaceoperations__research"><td class="mdescLeft"> </td><td class="mdescRight">Collection of objects used to extend the <a class="el" href="classoperations__research_1_1_constraint.html" title="A constraint is the main modeling object.">Constraint</a> <a class="el" href="classoperations__research_1_1_solver.html" title="Solver Class.">Solver</a> library. <br /></td></tr>
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Functions</h2></td></tr>
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<tr class="memitem:a3f9da4a1a05483aa80481604e8983b6b"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="constraint__solver_8h.html#a3f9da4a1a05483aa80481604e8983b6b">ABSL_DECLARE_FLAG</a> (int64_t, cp_random_seed)</td></tr>
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<tr class="memdesc:a3f9da4a1a05483aa80481604e8983b6b"><td class="mdescLeft"> </td><td class="mdescRight">Declaration of the core objects for the constraint solver. <a href="constraint__solver_8h.html#a3f9da4a1a05483aa80481604e8983b6b">More...</a><br /></td></tr>
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<tr class="memitem:a6daa2481a6bbd7b307647006a8752630"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceoperations__research.html#a6daa2481a6bbd7b307647006a8752630">CpRandomSeed</a> ()</td></tr>
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<tr class="memitem:a87fdc0126f6fc98ffb86ba1aa618f322"><td class="memItemLeft" align="right" valign="top">std::ostream & </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceoperations__research.html#a87fdc0126f6fc98ffb86ba1aa618f322">operator<<</a> (std::ostream &out, const Solver *const s)</td></tr>
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<tr class="memitem:a5a9881f8a07b166ef2cbde572cea27b6"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceoperations__research.html#a5a9881f8a07b166ef2cbde572cea27b6">Zero</a> ()</td></tr>
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<tr class="memdesc:a5a9881f8a07b166ef2cbde572cea27b6"><td class="mdescLeft"> </td><td class="mdescRight">NOLINT. <a href="namespaceoperations__research.html#a5a9881f8a07b166ef2cbde572cea27b6">More...</a><br /></td></tr>
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<tr class="memitem:a9e48359348ad94d97e6c44ffd52b33e3"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceoperations__research.html#a9e48359348ad94d97e6c44ffd52b33e3">One</a> ()</td></tr>
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<tr class="memdesc:a9e48359348ad94d97e6c44ffd52b33e3"><td class="mdescLeft"> </td><td class="mdescRight">This method returns 1. <a href="namespaceoperations__research.html#a9e48359348ad94d97e6c44ffd52b33e3">More...</a><br /></td></tr>
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<tr class="separator:a9e48359348ad94d97e6c44ffd52b33e3"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ab563b868509e5ca6c0db57a038d863e4"><td class="memItemLeft" align="right" valign="top">std::ostream & </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceoperations__research.html#ab563b868509e5ca6c0db57a038d863e4">operator<<</a> (std::ostream &out, const BaseObject *o)</td></tr>
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<tr class="memitem:a82d722796fae06c7fb9d1d8a37c91c99"><td class="memItemLeft" align="right" valign="top">std::ostream & </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceoperations__research.html#a82d722796fae06c7fb9d1d8a37c91c99">operator<<</a> (std::ostream &out, const Assignment &assignment)</td></tr>
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<tr class="memitem:aea2bf322fab4e2319a23ad22acf8ccf8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceoperations__research.html#aea2bf322fab4e2319a23ad22acf8ccf8">SetAssignmentFromAssignment</a> (Assignment *target_assignment, const std::vector< IntVar * > &target_vars, const Assignment *source_assignment, const std::vector< IntVar * > &source_vars)</td></tr>
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<tr class="memdesc:aea2bf322fab4e2319a23ad22acf8ccf8"><td class="mdescLeft"> </td><td class="mdescRight">NOLINT. <a href="namespaceoperations__research.html#aea2bf322fab4e2319a23ad22acf8ccf8">More...</a><br /></td></tr>
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<h2 class="groupheader">Function Documentation</h2>
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<a id="a3f9da4a1a05483aa80481604e8983b6b" name="a3f9da4a1a05483aa80481604e8983b6b"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a3f9da4a1a05483aa80481604e8983b6b">◆ </a></span>ABSL_DECLARE_FLAG()</h2>
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<td class="memname">ABSL_DECLARE_FLAG </td>
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<td>(</td>
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<td class="paramtype">int64_t </td>
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<td class="paramtype">cp_random_seed </td>
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<p>Declaration of the core objects for the constraint solver. </p>
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<p >The literature around constraint programming is extremely dense but one can find some basic introductions in the following links:</p><ul>
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<li><a href="http://en.wikipedia.org/wiki/Constraint_programming">http://en.wikipedia.org/wiki/Constraint_programming</a></li>
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<li><a href="http://kti.mff.cuni.cz/~bartak/constraints/index.html">http://kti.mff.cuni.cz/~bartak/constraints/index.html</a></li>
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<p >Here is a very simple Constraint Programming problem:</p>
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<p >If we see 56 legs and 20 heads, how many two-legged pheasants and four-legged rabbits are we looking at?</p>
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<p >Here is some simple Constraint Programming code to find out:</p>
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<p >void pheasant() { Solver s("pheasant"); // Create integer variables to represent the number of pheasants and // rabbits, with a minimum of 0 and a maximum of 20. IntVar* const p = s.MakeIntVar(0, 20, "pheasant")); IntVar* const r = s.MakeIntVar(0, 20, "rabbit")); // The number of heads is the sum of pheasants and rabbits. IntExpr* const heads = s.MakeSum(p, r); // The number of legs is the sum of pheasants * 2 and rabbits * 4. IntExpr* const legs = s.MakeSum(s.MakeProd(p, 2), s.MakeProd(r, 4)); // Constraints: the number of legs is 56 and heads is 20. Constraint* const ct_legs = s.MakeEquality(legs, 56); Constraint* const ct_heads = s.MakeEquality(heads, 20); s.AddConstraint(ct_legs); s.AddConstraint(ct_heads); DecisionBuilder* const db = s.MakePhase(p, r,
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Solver::CHOOSE_FIRST_UNBOUND,
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Solver::ASSIGN_MIN_VALUE); s.NewSearch(db); CHECK(s.NextSolution()); LOG(INFO) << "rabbits -> " << r->Value() << ", pheasants -> " << p->Value(); LOG(INFO) << s.DebugString(); s.EndSearch(); }</p>
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<p >which outputs:</p>
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<p >rabbits -> 8, pheasants -> 12 Solver(name = "pheasant", state = OUTSIDE_SEARCH, branches = 0, fails = 0, decisions = 0 propagation loops = 11, demons Run = 25, Run time = 0 ms) </p>
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