Tuple<T1,T2,T3,T4,T5>.IStructuralComparable.CompareTo 方法

参考

定义

命名空间:: System

程序集:: System.Runtime.dll

程序集:: mscorlib.dll

程序集:: netstandard.dll

重要

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使用指定的比较器将当前的 Tuple<T1,T2,T3,T4,T5> 对象与指定对象进行比较，并返回一个整数，该整数指示当前对象在排序顺序中的位置是在指定对象之前、之后还是与其相同。

 virtual int System.Collections.IStructuralComparable.CompareTo(System::Object ^ other, System::Collections::IComparer ^ comparer) = System::Collections::IStructuralComparable::CompareTo;

int IStructuralComparable.CompareTo (object other, System.Collections.IComparer comparer);

abstract member System.Collections.IStructuralComparable.CompareTo : obj * System.Collections.IComparer -> int
override this.System.Collections.IStructuralComparable.CompareTo : obj * System.Collections.IComparer -> int

Function CompareTo (other As Object, comparer As IComparer) As Integer Implements IStructuralComparable.CompareTo

参数

other: Object

要与当前实例进行比较的对象。

comparer: IComparer

提供用于比较的自定义规则的对象。

Int32

一个带符号整数，指示此实例和 other 在排序顺序中的相对位置，如下表所示。

值	说明
负整数	此实例位于 `other` 之前。
零	此实例在排序顺序中的位置与 `other` 相同。
正整数	此实例位于 `other` 之后。

实现

CompareTo(Object, IComparer)

例外

ArgumentException

other 不是 Tuple<T1,T2,T3,T4,T5> 对象。

示例

以下示例创建一组 Tuple<T1,T2,T3,T4,T5> 对象，其中包含用于在美国职业足球中跑回的职业统计数据。 5 元组的组件包括玩家的姓名、他玩的游戏数、携带次数或尝试次数、获得码总数以及得分的触地次数。该示例按未排序的顺序显示数组中每个元组的组件，对数组进行排序，然后调用以 ToString 排序顺序显示每个元组。为了对数组进行排序，该示例定义了一个泛型 YardsGained 类，该类实现 IComparer 接口，并按其第四个分量的值（ (码的值）按其第四个组件的值（而不是第一个组件) ）对对象进行降序排序 Tuple<T1,T2,T3,T4,T5> 。请注意，该示例不直接调用 IStructuralComparable.CompareTo 该方法。此方法由 Array.Sort(Array, IComparer) 数组中每个元素的方法隐式调用。

using System;
using System.Collections;
using System.Collections.Generic;

public class YardsGained<T1, T2, T3, T4, T5> : IComparer
{
   public int Compare(object x, object y)
   {
      Tuple<T1, T2, T3, T4, T5> tX = x as Tuple<T1, T2, T3, T4, T5>;
      if (tX == null)
      { 
         return 0;
      }   
      else
      {
         Tuple<T1, T2, T3, T4, T5> tY = y as Tuple<T1, T2, T3, T4, T5>;
         return -1 * Comparer<T4>.Default.Compare(tX.Item4, tY.Item4);             
      }
   }
}

public class Example
{
   public static void Main()
   {
      // Organization of runningBacks 5-tuple:
      //    Component 1: Player name
      //    Component 2: Number of games played
      //    Component 3: Number of attempts (carries)
      //    Component 4: Number of yards gained 
      //    Component 5: Number of touchdowns   
      Tuple<string, int, int, int, int>[] runningBacks =
           { Tuple.Create("Payton, Walter", 190, 3838, 16726, 110),  
             Tuple.Create("Sanders, Barry", 153, 3062, 15269, 99),            
             Tuple.Create("Brown, Jim", 118, 2359, 12312, 106),            
             Tuple.Create("Dickerson, Eric", 144, 2996, 13259, 90),            
             Tuple.Create("Faulk, Marshall", 176, 2836, 12279, 100) }; 

      // Display the array in unsorted order.
      Console.WriteLine("The values in unsorted order:");
      foreach (var runningBack in runningBacks)
         Console.WriteLine(runningBack.ToString());
      Console.WriteLine();
      
      // Sort the array
      Array.Sort(runningBacks, new YardsGained<string, int, int, int, int>());
      
      // Display the array in sorted order.
      Console.WriteLine("The values in sorted order:");
      foreach (var runningBack in runningBacks)
         Console.WriteLine(runningBack.ToString());
   }
}
// The example displays the following output:
//       The values in unsorted order:
//       (Payton, Walter, 190, 3838, 16726, 110)
//       (Sanders, Barry, 153, 3062, 15269, 99)
//       (Brown, Jim, 118, 2359, 12312, 106)
//       (Dickerson, Eric, 144, 2996, 13259, 90)
//       (Faulk, Marshall, 176, 2836, 12279, 100)
//       
//       The values in sorted order:
//       (Brown, Jim, 118, 2359, 12312, 106)
//       (Dickerson, Eric, 144, 2996, 13259, 90)
//       (Faulk, Marshall, 176, 2836, 12279, 100)
//       (Payton, Walter, 190, 3838, 16726, 110)
//       (Sanders, Barry, 153, 3062, 15269, 99)

open System
open System.Collections
open System.Collections.Generic

type YardsGained<'T1, 'T2, 'T3, 'T4, 'T5>() =
    interface IComparer with
        member _.Compare(x, y) =
            match x with
            | :? Tuple<'T1, 'T2, 'T3, 'T4, 'T5> as tX ->
                let tY = y :?> Tuple<'T1, 'T2, 'T3, 'T4, 'T5>
                -1 * Comparer<'T4>.Default.Compare(tX.Item4, tY.Item4)             
            | _ -> 0

// Organization of runningBacks 5-tuple:
//    Component 1: Player name
//    Component 2: Number of games played
//    Component 3: Number of attempts (carries)
//    Component 4: Number of yards gained 
//    Component 5: Number of touchdowns   
let runningBacks =
    [| Tuple.Create("Payton, Walter", 190, 3838, 16726, 110)
       Tuple.Create("Sanders, Barry", 153, 3062, 15269, 99)
       Tuple.Create("Brown, Jim", 118, 2359, 12312, 106)
       Tuple.Create("Dickerson, Eric", 144, 2996, 13259, 90)
       Tuple.Create("Faulk, Marshall", 176, 2836, 12279, 100) |]

// Display the array in unsorted order.
printfn "The values in unsorted order:"
for runningBack in runningBacks do
    printfn $"{runningBack}"
printfn ""

// Sort the array
Array.Sort(runningBacks, YardsGained<string, int, int, int, int>())

// Display the array in sorted order.
printfn "The values in sorted order:"
for runningBack in runningBacks do
    printfn $"{runningBack}"
// The example displays the following output:
//       The values in unsorted order:
//       (Payton, Walter, 190, 3838, 16726, 110)
//       (Sanders, Barry, 153, 3062, 15269, 99)
//       (Brown, Jim, 118, 2359, 12312, 106)
//       (Dickerson, Eric, 144, 2996, 13259, 90)
//       (Faulk, Marshall, 176, 2836, 12279, 100)
//       
//       The values in sorted order:
//       (Brown, Jim, 118, 2359, 12312, 106)
//       (Dickerson, Eric, 144, 2996, 13259, 90)
//       (Faulk, Marshall, 176, 2836, 12279, 100)
//       (Payton, Walter, 190, 3838, 16726, 110)
//       (Sanders, Barry, 153, 3062, 15269, 99)

Imports System.Collections
Imports System.Collections.Generic

Public Class YardsGained(Of T1, T2, T3, T4, T5) : Implements IComparer
   Public Function Compare(x As Object, y As Object) As Integer _
                   Implements IComparer.Compare
      Dim tX As Tuple(Of T1, T2, T3, T4, T5) = TryCast(x, Tuple(Of T1, T2, T3, T4, T5))
      If tX Is Nothing Then
         Return 0
      Else
         Dim tY As Tuple(Of T1, T2, T3, T4, T5) = DirectCast(y, Tuple(Of T1, T2, T3, T4, T5))
         Return -1 * Comparer(Of T4).Default.Compare(tx.Item4, tY.Item4)             
      End If
   End Function
End Class

Module Example
   Public Sub Main()
      ' Organization of runningBacks 5-tuple:
      '    Component 1: Player name
      '    Component 2: Number of games played
      '    Component 3: Number of attempts (carries)
      '    Component 4: Number of yards gained 
      '    Component 5: Number of touchdowns   
      Dim runningBacks() =
          { Tuple.Create("Payton, Walter", 190, 3838, 16726, 110),  
            Tuple.Create("Sanders, Barry", 153, 3062, 15269, 99),            
            Tuple.Create("Brown, Jim", 118, 2359, 12312, 106),            
            Tuple.Create("Dickerson, Eric", 144, 2996, 13259, 90),            
            Tuple.Create("Faulk, Marshall", 176, 2836, 12279, 100) } 

      ' Display the array in unsorted order.
      Console.WriteLine("The values in unsorted order:")
      For Each runningBack In runningBacks
         Console.WriteLine(runningBack.ToString())
      Next
      Console.WriteLine()
      
      ' Sort the array
      Array.Sort(runningBacks, New YardsGained(Of String, Integer, Integer, Integer, Integer)())
      
      ' Display the array in sorted order.
      Console.WriteLine("The values in sorted order:")
      For Each runningBack In runningBacks
         Console.WriteLine(runningBack.ToString())
      Next
   End Sub
End Module
' The example displays the following output:
'       The values in unsorted order:
'       (Payton, Walter, 190, 3838, 16726, 110)
'       (Sanders, Barry, 153, 3062, 15269, 99)
'       (Brown, Jim, 118, 2359, 12312, 106)
'       (Dickerson, Eric, 144, 2996, 13259, 90)
'       (Faulk, Marshall, 176, 2836, 12279, 100)
'       
'       The values in sorted order:
'       (Payton, Walter, 190, 3838, 16726, 110)
'       (Sanders, Barry, 153, 3062, 15269, 99)
'       (Dickerson, Eric, 144, 2996, 13259, 90)
'       (Brown, Jim, 118, 2359, 12312, 106)
'       (Faulk, Marshall, 176, 2836, 12279, 100)

注解

此成员是显式接口成员的实现。它只能在 Tuple<T1,T2,T3,T4,T5> 实例被强制转换为 IStructuralComparable 接口时使用。

虽然可以直接调用此方法，但通常由包含参数的集合排序方法 IComparer 调用此方法，以便对集合的成员进行排序。例如，它由Array.Sort(Array, IComparer)该方法和Add通过使用SortedList.SortedList(IComparer)构造函数实例化的对象的方法SortedList调用。

注意

该方法 IStructuralComparable.CompareTo 用于排序操作。当比较的主要用途是确定两个对象是否相等时，不应使用它。若要确定两个对象是否相等，请调用 IStructuralEquatable.Equals(Object, IEqualityComparer) 该方法。

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Tuple<T1,T2,T3,T4,T5>.IStructuralComparable.CompareTo 方法

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参数

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实现

例外

示例

注解

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