protected override bool TryFulfill(IEnumerable <SolverDemand> demands)
{
var(essential, recommended) = Bucketize(demands);
// Quickly reject impossible sets of demands
if (essential.Any(demand => !demand.Candidates.Any(candidate => candidate.IsSuitable)))
{
return(false);
}
var selectionsSnapshot = Selections.Clone(); // Create snapshot
foreach (var permutation in essential.Permutate())
{
if (permutation.All(TryFulfill))
{
recommended.ForEach(x => TryFulfill(x));
return(true);
}
else
{
Selections = selectionsSnapshot.Clone(); // Revert to snapshot
}
}
return(false);
}
