public static Nullable<double> Distance(
	Nullable<double> startLatitude,
	Nullable<double> startLongitude,
	Nullable<double> endLatitude,
	Nullable<double> endLongitude
)

Public Shared Function Distance ( 
	startLatitude As Nullable(Of Double),
	startLongitude As Nullable(Of Double),
	endLatitude As Nullable(Of Double),
	endLongitude As Nullable(Of Double)
) As Nullable(Of Double)

public:
static Nullable<double> Distance(
	Nullable<double> startLatitude, 
	Nullable<double> startLongitude, 
	Nullable<double> endLatitude, 
	Nullable<double> endLongitude
)

static member Distance : 
        startLatitude : Nullable<float> * 
        startLongitude : Nullable<float> * 
        endLatitude : Nullable<float> * 
        endLongitude : Nullable<float> -> Nullable<float>