检查 VB 中的通用对象是否相等

Question

这看起来很微不足道，但我无法让它发挥作用。我需要比较两个相同类型 T 的泛型是否相等：

Sub SomeMethod(Of T)(x As T, y As T) 
    If x Is y
        ' do stuff
    End If
End Sub

编译器拒绝：

'Is' operand of type 'T' can be compared only to 'Nothing' because 'T' is a type parameter with no class constraint.

Answer 1

像这样给它一个class约束：

Sub SomeMethod(Of T As Class)(x As T, y As T)
    If x Is y Then
        ' do stuff
    End If
End Sub

Check Generic objects for equality in VB