QLNet.Matrix.empty C# (CSharp) Метод

        public bool empty()
        {
            return rows_ == 0 || columns_ == 0;
        }

 public Matrix(Matrix from)
 {
     data_    = !from.empty() ? (double[])from.data_.Clone() : null;
     rows_    = from.rows_;
     columns_ = from.columns_;
 }