public override int GetHashCode()
{
int hash = m_before.GetHashCode();
if (m_after != null)
{
hash ^= m_after.GetHashCode();
}
if (m_solution != null)
{
hash ^= m_solution.GetHashCode();
}
return(hash);
}
public override int GetHashCode()
{
return(m_board.GetHashCode() ^ m_state.GetHashCode() ^ ((m_solution != null) ? m_solution.GetHashCode() : 0));
}