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VB.NET Tuple<T1,T2,T3,T4>.IStructuralEquatable.Equals方法代码示例

本文整理汇总了VB.NET中System.Tuple<T1,T2,T3,T4>.IStructuralEquatable.Equals方法的典型用法代码示例。如果您正苦于以下问题:VB.NET Tuple<T1,T2,T3,T4>.IStructuralEquatable.Equals方法的具体用法?VB.NET Tuple<T1,T2,T3,T4>.IStructuralEquatable.Equals怎么用?VB.NET Tuple<T1,T2,T3,T4>.IStructuralEquatable.Equals使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在System.Tuple<T1,T2,T3,T4>的用法示例。


在下文中一共展示了Tuple<T1,T2,T3,T4>.IStructuralEquatable.Equals方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的VB.NET代码示例。

示例1: Example

' 导入命名空间
Imports System.Collections

Public Class Item3And4Comparer(Of T1, T2, T3, T4) : Implements IEqualityComparer
   
   Private argument As Integer = 0
   
   Public Overloads Function Equals(x As Object, y As Object) As Boolean _
                   Implements IEqualityComparer.Equals
      argument += 1
      
      ' Return true for all values of Item1, Item2.
      If argument <= 2 Then
         Return True
      Else
         Return x.Equals(y)
      End If
   End Function
   
   Public Overloads Function GetHashCode(obj As Object) As Integer _
                    Implements IEqualityComparer.GetHashCode
      If TypeOf obj Is T1 Then
         Return CType(obj, T1).GetHashCode()
      ElseIf TypeOf obj Is T2 Then
         Return CType(obj, T2).GetHashCode()
      ElseIf TypeOf obj Is T3 Then
         REturn CType(Obj, T3).GetHashCode()
      Else	
         Return CType(obj, T4).GetHashCode()
      End If
   End Function                
End Class

Module Example
   Public Sub Main()
      Dim temperatures() = 
              { Tuple.Create("New York, NY", 4, 61, 43), _
                Tuple.Create("Chicago, IL", 2, 34, 18), _ 
                Tuple.Create("Newark, NJ", 4, 61, 43), _
                Tuple.Create("Boston, MA", 6, 77, 59), _
                Tuple.Create("Detroit, MI", 9, 74, 53), _
                Tuple.Create("Minneapolis, MN", 8, 81, 61) } 
      ' Compare each item with every other item for equality.
      For ctr As Integer = 0 To temperatures.Length - 1
         Dim temperatureInfo As IStructuralEquatable = temperatures(ctr)
         For ctr2 As Integer = ctr + 1 To temperatures.Length - 1
            Console.WriteLine("{0} = {1}: {2}", 
                              temperatureInfo, temperatures(ctr2), 
                              temperatureInfo.Equals(temperatures(ctr2), 
                                              New Item3And4Comparer(Of String, Integer, Double, Double)))
         Next  
         Console.WriteLine()                                               
      Next
   End Sub
End Module
开发者ID:VB.NET开发者,项目名称:System,代码行数:55,代码来源:Tuple.IStructuralEquatable.Equals

输出:

(New York, NY, 4, 61, 43) = (Chicago, IL, 2, 34, 18): False
(New York, NY, 4, 61, 43) = (Newark, NJ, 4, 61, 43): True
(New York, NY, 4, 61, 43) = (Boston, MA, 6, 77, 59): False
(New York, NY, 4, 61, 43) = (Detroit, MI, 9, 74, 53): False
(New York, NY, 4, 61, 43) = (Minneapolis, MN, 8, 81, 61): False

(Chicago, IL, 2, 34, 18) = (Newark, NJ, 4, 61, 43): False
(Chicago, IL, 2, 34, 18) = (Boston, MA, 6, 77, 59): False
(Chicago, IL, 2, 34, 18) = (Detroit, MI, 9, 74, 53): False
(Chicago, IL, 2, 34, 18) = (Minneapolis, MN, 8, 81, 61): False

(Newark, NJ, 4, 61, 43) = (Boston, MA, 6, 77, 59): False
(Newark, NJ, 4, 61, 43) = (Detroit, MI, 9, 74, 53): False
(Newark, NJ, 4, 61, 43) = (Minneapolis, MN, 8, 81, 61): False

(Boston, MA, 6, 77, 59) = (Detroit, MI, 9, 74, 53): False
(Boston, MA, 6, 77, 59) = (Minneapolis, MN, 8, 81, 61): False

(Detroit, MI, 9, 74, 53) = (Minneapolis, MN, 8, 81, 61): False


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