public override Matrix SwapColumns(
	int column1,
	int column2
)

Public Overrides Function SwapColumns ( 
	column1 As Integer,
	column2 As Integer
) As Matrix

public:
virtual Matrix^ SwapColumns(
	int column1, 
	int column2
) override

abstract SwapColumns : 
        column1 : int * 
        column2 : int -> Matrix 
override SwapColumns : 
        column1 : int * 
        column2 : int -> Matrix