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Fixed Dest

Tries moving every object in the hot container to a single, fixed destination container. Unlike Single, the destination is not explored---it is pinned in advance---so only the source objects vary. Useful for draining into, or filling, one specific container.

Every object in the source container is evaluated for moving into one fixed destination container

Parameters​

ParameterTypeRequiredDefaultDescription
specialContainerstringNo-The fixed destination container objects are moved into
sampleSizeSampleSizeNoall objectsIf set, samples a subset of the destination's objects rather than considering every one
objectBundleFormationHintsObjectBundleFormationHintsNo-For scope items that require objects to move in bundles, describes how those bundles are formed

Behavior​

Given the hot container chosen by the common logic and a fixed destination container, the move type evaluates moving each object from the source into that destination (optionally sampling), and applies the best improving move.

Complexity​

Roughly objects neighbors are evaluated---one per candidate object---since the destination is fixed.

Example​

Configure local search to use only the fixed dest move type, pinning the destination:

FixedDestMoveTypeSpec fixedDest;
fixedDest.specialContainer() = "container1";

LocalSearchSolverSpec localSearch;
localSearch.moveTypeList()->push_back(
ProblemSolver::makeMoveTypeSpec(fixedDest));

solver.addSolver(localSearch);

(source)