private static void Engage(Proposer proposer, Accepter accepter)
{
proposer.EngagedTo = accepter;
accepter.EngagedTo = proposer;
}
private static void Free(Proposer proposer)
{
proposer.EngagedTo = null;
}
private static int Score(Proposer proposer, Accepter accepter) => proposer.PreferenceOrder.ToList().IndexOf(accepter);
private static bool IsEngaged(Proposer proposer) => proposer.EngagedTo != null;
public bool PrefersOverCurrent(Proposer newProposer) => EngagedTo == null || PreferenceOrder.IndexOf(newProposer) < PreferenceOrder.IndexOf(EngagedTo);
