Class IloSolutionDeltaCheck

In some instances, the illegality of a solution delta can be determined before the delta is applied to the solution in question, if knowledge of the problem is available. This handle class can be used to perform such “pre-filtering”, which can considerably improve the performance of local search procedures. IloMetaHeuristic::getDeltaCheck returns such a delta checker. This is the most common use of the class.

This constructor creates a delta checker whose implementation pointer is 0 (zero). The handle must be assigned before its methods can be used.

This constructor creates a handle object (an instance of the class IloSolutionDeltaCheck from a pointer to an implementation object (an instance of the class IloSolutionDeltaCheckI).

This member function returns the environment specified when the implementation object of the invoking object was constructed.

This member function returns a pointer to the implementation object corresponding to the invoking delta checker.

This member function is called with the delta to be checked. If delta is determined to be illegal, this member function returns IloFalse. Otherwise, it returns IloTrue.

This operator assigns an address to the handle pointer of the invoking delta checker. That address is the location of the implementation object of check. After the execution of this operator, the invoking delta checker and check both point to the same implementation object.