4
我試圖創建一個基於lambda函數返回IEqualityComparer的擴展方法。繼承人的擴展方法:匿名函數的擴展方法
<Extension()>
Public Function Comparer(Of T)(Func As Func(Of T, T, Boolean)) As IEqualityComparer(Of T)
Return New GenericComparer(Of T)(Func)
End Function
這裏是我要找的使用,
Dim CICF = (Function(a As String, b As String) As Boolean
If a.ToUpper = b.ToUpper Then
Return True
Else
Return False
End If
End Function).Comparer
如果我分配功能來顯式類型,編譯器將報告錯誤
'Comparer' is not a member of '<anonymous method>'
它的工作原理如下:
Dim CICF As Func(Of String, String, Boolean) = (Function(a As String, b As String) As Boolean
If a.ToUpper = b.ToUpper Then
Return True
Else
Return False
End If
End Function)
Dim CIC = CICF.Comparer
所以我的問題是,我可以輸入擴展方法的方式,讓我使用我期待的單線風格?那就是說,如何輸入擴展方法來接受匿名方法?
這就是我的想法,但我想也許有什麼我沒有看到這裏。 – Kratz