C# 3.0 generic type inference - passing a delegate as a function parameter

Question

I am wondering why the C# 3.0 compiler is unable to infer the type of a method when it is passed as a parameter to a generic function when it can implicitly create a delegat

Answer 1

Just for completeness, this is not specific to C#: The same VB.NET code fails similarly:

Imports System

Module Test
  Sub foo(ByVal x As integer)
  End Sub
  Sub bar(Of T)(ByVal f As Action(Of T))
  End Sub

  Sub Main()
    Dim f As Action(Of integer) = AddressOf foo ' I can do this
    bar(f) ' and then do this
    bar(AddressOf foo) ' but this does not work
  End Sub
End Module

error BC32050: Type parameter 'T' for 'Public Sub bar(Of T)(f As System.Action(Of T))' cannot be inferred.