public static double Sum<T>(
	IEnumerable<T> collection,
	Func<T, double> terms
)

Public Shared Function Sum(Of T) ( 
	collection As IEnumerable(Of T),
	terms As Func(Of T, Double)
) As Double

public:
generic<typename T>
static double Sum(
	IEnumerable<T>^ collection, 
	Func<T, double>^ terms
)

static member Sum : 
        collection : IEnumerable<'T> * 
        terms : Func<'T, float> -> float