public override int GetHashCode()
{
return(HashCode.Calculate(this.AllNodesReverse().Select(item => (HashCode)item.GetHashCode())));
}
/// <summary>
/// Returns a hash code for this instance.
/// </summary>
/// <returns>
/// A hash code for this instance, suitable for use in hashing algorithms and data structures like a hash table.
/// </returns>
public override int GetHashCode()
{
return(HashCode.Calculate(this.done.GetHashCode(), this.undone.GetHashCode()));
}