/// <summary>
 /// Initializes a new instance of the <see cref="SparseVector{T}"/> class.
 /// </summary>
 /// <param name="length">The length of the vector.</param>
 public SparseVector(int length)
     : base(length)
 {
     _trashCan = new SparseVectorElement(0);
 }
 /// <summary>
 /// Initializes a new instance of the <see cref="SparseVector{T}"/> class.
 /// </summary>
 public SparseVector()
     : base(1)
 {
     _trashCan = new SparseVectorElement(0);
 }