MatrixItem Property

public abstract double this[
	int rowIndex,
	int columnIndex
] { get; set; }

Public MustOverride Default Property Item ( 
	rowIndex As Integer,
	columnIndex As Integer
) As Double
	Get
	Set

public:
virtual property double default[int rowIndex, int columnIndex] {
	double get (int rowIndex, int columnIndex) abstract;
	void set (int rowIndex, int columnIndex, double value) abstract;
}

abstract Item : float with get, set