CollectionsExUpdateT 方法

public static void Update<T>(
	this List<T> list,
	int index,
	T value
)

<ExtensionAttribute>
Public Shared Sub Update(Of T) ( 
	list As List(Of T),
	index As Integer,
	value As T
)

[<ExtensionAttribute>]
static member Update : 
        list : List<'T> * 
        index : int * 
        value : 'T -> unit