用泛型和反射实现函数通用
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使用泛型和反射机制事项函数的通用，写下来，欢迎吐槽
代码示例使用vb. net
Imports System.Reflection
Module Module1
Sub Main()
Dim lst1 As List(Of Person) = New List(Of Person)()
Dim lst2 As List(Of Person) = New List(Of Person)()
Dim lstT As List(Of Person) = New List(Of Person)()
For i As Integer = 1 To 10
Dim p As Person = New Person() With {.name = "A" + i.ToString, .age = i}
lst1.Add(p)
Next
For i As Integer = 5 To 20
Dim p As Person = New Person() With {.name = "A" + i.ToString, .age = i}
lst2.Add(p)
Next
lstT = New Common().MyFilter(Of Person)(lst1, lst2)
For Each itm As Person In lstT
Console.WriteLine(itm.name)
Next
Console.WriteLine("========================")
Dim lst3 As List(Of Animal) = New List(Of Animal)()
Dim lst4 As List(Of Animal) = New List(Of Animal)()
Dim lstM As List(Of Animal) = New List(Of Animal)()
For i As Integer = 1 To 10
Dim p As Animal = New Animal() With {.name = "B" + i.ToString, .ID = i}
lst3.Add(p)
Next
For i As Integer = 5 To 20
Dim p As Animal = New Animal() With {.name = "B" + i.ToString, .ID = i}
lst4.Add(p)
Next
lstM = New Common().MyFilter(Of Animal)(lst3, lst4)
For Each itm As Animal In lstM
Console.WriteLine(itm.name)
Next
Console.WriteLine("Over OK!")
Console.Read()
End Sub
End Module
Class Person
Public name As String
Public age As Integer
End Class
Class Animal
Public name As String
Public ID As String
End Class
Class Common
Public Function MyFilter(Of T)(ByVal lst1 As List(Of T), ByVal lst2 As List(Of T)) As List(Of T)
Dim lstT As List(Of T) = New List(Of T)()
lstT = lst1.Where(Function(x As T)
If lst2.Any(Function(u As T)
Return MyCompare(x, u)
End Function) Then
Return False
Else
Return True
End If
End Function).ToList()
Return lstT
End Function
Public Shared Function MyCompare(Of T)(ByVal t1 As T, ByVal t2 As T) As Boolean
Dim tmp1 As Type = t1.GetType()
Dim fields1 As FieldInfo() = tmp1.GetFields()
Dim tmp2 As Type = t2.GetType()
Dim fields2 As FieldInfo() = tmp2.GetFields()
For i As Integer = 0 To fields1.Count - 1
If Not (fields1(i).GetValue(t1)).Equals((fields2(i).GetValue(t2))) Then
Return False
End If
Next
Return True
End Function
End Class
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