// ReSharper disable once UnusedMember.Global
public bool TrySolve()
{
var count = 0;
void CountSolutions(object sender, ChangeMakerSolutionEventArgs e) => ++ count;
Solved += CountSolutions;
using (var solver = new Solver(SolverName))
{
var compositionVars = DeclareVariables(solver);
// ReSharper disable once IdentifierTypo
decimal GetActualDenomCompositeValue(Denomination d)
=> compositionVars[(int)d, 1].Value();
// ReSharper disable once IdentifierTypo
Tuple <Denomination, decimal> GetActualDenomComposite(Denomination d)
=> Create(d, GetActualDenomCompositeValue(d));
DefineConstraints(solver, compositionVars).ToList().ForEach(solver.Add);
using (var sc = solver.MakeAllSolutionCollector())
{
using (var db = solver.MakePhase(compositionVars.Flatten().ToArray()
, INT_VAR_DEFAULT, INT_VALUE_DEFAULT))
{
StartedOn = UtcNow;
solver.NewSearch(db, sc);
while (solver.NextSolution())
{
var solution = new ChangeMaker(
GetActualDenomComposite(TwoPounds)
, GetActualDenomComposite(OnePence)
, GetActualDenomComposite(TwoPence)
, GetActualDenomComposite(FivePence)
, GetActualDenomComposite(TenPence)
, GetActualDenomComposite(TwentyPence)
, GetActualDenomComposite(FiftyPence)
, GetActualDenomComposite(OnePound)
);
OnSolved(solution);
}
solver.EndSearch();
FinishedOn = UtcNow;
}
}
}
Solved -= CountSolutions;
return(count > 0);
}
private void OnSolved(ChangeMaker solution) => Solved?.Invoke(this, new ChangeMakerSolutionEventArgs(solution));
internal ChangeMakerSolutionEventArgs(ChangeMaker solution)
{
Solution = solution;
}