'宣言 Protected Friend Function GetPreviousOrExactIndexHelper( _ ByVal world As Point, _ ByVal skipUnknowns As Boolean, _ ByVal indexAxis As Axis, _ ByVal getExactUnsortedIndex As Func(Of Point,Double), _ ByVal valueColumn As IList(Of Double) _ ) As Integer
protected internal int GetPreviousOrExactIndexHelper( Point world, bool skipUnknowns, Axis indexAxis, Func<Point,double> getExactUnsortedIndex, IList<double> valueColumn )