語言

Tuple<T1,T2>.Equals(Object) 方法

定義

命名空間:
System
組件:
mscorlib.dll, System.Runtime.dll
組件:
netstandard.dll, System.Runtime.dll
組件:
System.Runtime.dll
組件:
mscorlib.dll
組件:
netstandard.dll
來源:
Tuple.cs
來源:
Tuple.cs
來源:
Tuple.cs
來源:
Tuple.cs
來源:
Tuple.cs

回傳一個值，表示目前 Tuple<T1,T2> 物件是否等於指定物件。

public:
 override bool Equals(System::Object ^ obj);
public override bool Equals(object obj);
public override bool Equals(object? obj);
override this.Equals : obj -> bool
Public Overrides Function Equals (obj As Object) As Boolean

參數

obj
Object

這個例子是要比較的對象。

傳回

Boolean

true如果當前實例等於指定的物件;否則，。 false

範例

以下範例呼叫該 Tuple<T1,T2>.Equals(Object) 方法來判斷一組 Tuple<T1,T2> 物件陣列中是否有物件彼此相等。 輸出反映出方法在比較Equals(Object)元件值相等的物件時回true傳Tuple<T1,T2>的事實。

using System;

public class Example
{
   public static void Main()
   {
      Tuple<string, Nullable<int>>[] scores = 
                      { new Tuple<string, Nullable<int>>("Dan", 90),
                        new Tuple<string, Nullable<int>>("Ernie", null),
                        new Tuple<string, Nullable<int>>("Jill", 88),
                        new Tuple<string, Nullable<int>>("Ernie", null), 
                        new Tuple<string, Nullable<int>>("Nancy", 88), 
                        new Tuple<string, Nullable<int>>("Dan", 90) };

      // Compare the Tuple objects
      for (int ctr = 0; ctr < scores.Length; ctr++)
      {
         for (int innerCtr = ctr + 1; innerCtr < scores.Length; innerCtr++)
         {
            Console.WriteLine("{0} = {1}: {2}", 
                              scores[ctr], scores[innerCtr], 
                              scores[ctr].Equals(scores[innerCtr]));
         }
         Console.WriteLine();
      }
   }
}
// The example displays the following output:
//       (Dan, 90) = (Ernie, ): False
//       (Dan, 90) = (Jill, 88): False
//       (Dan, 90) = (Ernie, ): False
//       (Dan, 90) = (Nancy, 88): False
//       (Dan, 90) = (Dan, 90): True
//       
//       (Ernie, ) = (Jill, 88): False
//       (Ernie, ) = (Ernie, ): True
//       (Ernie, ) = (Nancy, 88): False
//       (Ernie, ) = (Dan, 90): False
//       
//       (Jill, 88) = (Ernie, ): False
//       (Jill, 88) = (Nancy, 88): False
//       (Jill, 88) = (Dan, 90): False
//       
//       (Ernie, ) = (Nancy, 88): False
//       (Ernie, ) = (Dan, 90): False
//       
//       (Nancy, 88) = (Dan, 90): False

open System

let scores = 
    [| Tuple<string, Nullable<int>>("Dan", 90)
       Tuple<string, Nullable<int>>("Ernie", Nullable())
       Tuple<string, Nullable<int>>("Jill", 88)
       Tuple<string, Nullable<int>>("Ernie", Nullable()) 
       Tuple<string, Nullable<int>>("Nancy", 88)
       Tuple<string, Nullable<int>>("Dan", 90) |]

// Compare the Tuple objects
for ctr = 0 to scores.Length - 1 do
    for innerCtr = ctr + 1 to scores.Length - 1 do
        printfn $"{scores[ctr]} = {scores[innerCtr]}: {scores[ctr].Equals scores[innerCtr]}"
    printfn ""
// The example displays the following output:
//       (Dan, 90) = (Ernie, ): False
//       (Dan, 90) = (Jill, 88): False
//       (Dan, 90) = (Ernie, ): False
//       (Dan, 90) = (Nancy, 88): False
//       (Dan, 90) = (Dan, 90): True
//       
//       (Ernie, ) = (Jill, 88): False
//       (Ernie, ) = (Ernie, ): True
//       (Ernie, ) = (Nancy, 88): False
//       (Ernie, ) = (Dan, 90): False
//       
//       (Jill, 88) = (Ernie, ): False
//       (Jill, 88) = (Nancy, 88): False
//       (Jill, 88) = (Dan, 90): False
//       
//       (Ernie, ) = (Nancy, 88): False
//       (Ernie, ) = (Dan, 90): False
//       
//       (Nancy, 88) = (Dan, 90): False

Module Example
   Public Sub Main()
      Dim scores() As Tuple(Of String, Nullable(Of Integer)) = 
                      { New Tuple(Of String, Nullable(Of Integer))("Dan", 90),
                        New Tuple(Of String, Nullable(Of Integer))("Ernie", Nothing),
                        New Tuple(Of String, Nullable(Of Integer))("Jill", 88),
                        New Tuple(Of String, Nullable(Of Integer))("Ernie", Nothing), 
                        New Tuple(Of String, Nullable(Of Integer))("Nancy", 88), 
                        New Tuple(Of String, Nullable(Of Integer))("Dan", 90) }

      ' Compare the Tuple objects
      For ctr As Integer = 0 To scores.Length - 1
         For innerCtr As Integer = ctr + 1 To scores.Length - 1
            Console.WriteLine("{0} = {1}: {2}", 
                              scores(ctr), scores(innerCtr), 
                              scores(ctr).Equals(scores(innerCtr)))
         Next
         Console.WriteLine()
      Next
   End Sub
End Module
' The example displays the following output:
'       (Dan, 90) = (Ernie, ): False
'       (Dan, 90) = (Jill, 88): False
'       (Dan, 90) = (Ernie, ): False
'       (Dan, 90) = (Nancy, 88): False
'       (Dan, 90) = (Dan, 90): True
'       
'       (Ernie, ) = (Jill, 88): False
'       (Ernie, ) = (Ernie, ): True
'       (Ernie, ) = (Nancy, 88): False
'       (Ernie, ) = (Dan, 90): False
'       
'       (Jill, 88) = (Ernie, ): False
'       (Jill, 88) = (Nancy, 88): False
'       (Jill, 88) = (Dan, 90): False
'       
'       (Ernie, ) = (Nancy, 88): False
'       (Ernie, ) = (Dan, 90): False
'       
'       (Nancy, 88) = (Dan, 90): False

備註

在以下條件下，參數 obj 被視為等於當前實例：

  • 它是一個 Tuple<T1,T2> 物件。

  • 它的兩個組件與目前實例屬於同一類型。

  • 其兩個組成部分等於當前實例的組成部分。 等號由每個元件的預設物件等式比較器決定。

適用於