Tuple<T1>.Equals(Object) Metode

Definisi

Ruang nama:

System

Rakitan:

System.Runtime.dll

Sumber:

Tuple.cs

Mengembalikan nilai yang menunjukkan apakah objek saat ini Tuple<T1> sama dengan objek tertentu.

public:
 override bool Equals(System::Object ^ obj);

public override bool Equals (object? obj);

override this.Equals : obj -> bool

Public Overrides Function Equals (obj As Object) As Boolean

Parameter

obj

Object

Objek untuk dibandingkan dengan instans ini.

Mengembalikan

Boolean

true jika instans saat ini sama dengan objek yang ditentukan; jika tidak, false.

Contoh

Contoh berikut memanggil Tuple<T1>.Equals(Object) metode untuk membandingkan Tuple<T1> objek yang komponennya adalah Double nilai dengan tiga Tuple<T1> objek yang komponennya memiliki karakteristik berikut:

• Jenis yang sama (Double) dan nilai yang sama.

• Jenis yang sama (Double), tetapi nilai yang berbeda.

• Jenis yang berbeda (Single), tetapi nilai yang sama.

using System;

public class Example
{
   public static void Main()
   {
      var doubleTuple1 = Tuple.Create(12.3455);
      var doubleTuple2 = Tuple.Create(16.8912);
      var doubleTuple3 = Tuple.Create(12.3455);
      var singleTuple1 = Tuple.Create(12.3455f);
      var tuple2 = Tuple.Create("James", 97.3); 
        
      // Compare first tuple with a Tuple(Of Double) with a different value.
      TestEquality(doubleTuple1, doubleTuple2);
      // Compare first tuple with a Tuple(Of Double) with the same value.
      TestEquality(doubleTuple1, doubleTuple3);
      // Compare first tuple with a Tuple(Of Single) with the same value.
      TestEquality(doubleTuple1, singleTuple1);
      // Compare a 1-tuple with a 2-tuple.
      TestEquality(doubleTuple1, tuple2); 
   }

   private static void TestEquality(Tuple<double> tuple, object obj)
   {
      Console.WriteLine("{0} = {1}: {2}", tuple.ToString(),
                                          obj.ToString(),
                                          tuple.Equals(obj));
   } 
}
// The example displays the following output:
//       (12.3455) = (16.8912): False
//       (12.3455) = (12.3455): True
//       (12.3455) = (12.3455): False
//       (12.3455) = (James, 97.3): False

open System

let testEquality (tuple: Tuple<double>) (obj: obj) =
    printfn $"{tuple} = {obj}: {tuple.Equals obj}"

let doubleTuple1 = Tuple.Create 12.3455
let doubleTuple2 = Tuple.Create 16.8912
let doubleTuple3 = Tuple.Create 12.3455
let singleTuple1 = Tuple.Create 12.3455f
let tuple2 = Tuple.Create("James", 97.3) 

// Compare first tuple with a Tuple(Of Double) with a different value.
testEquality doubleTuple1 doubleTuple2
// Compare first tuple with a Tuple(Of Double) with the same value.
testEquality doubleTuple1 doubleTuple3
// Compare first tuple with a Tuple(Of Single) with the same value.
testEquality doubleTuple1 singleTuple1
// Compare a 1-tuple with a 2-tuple.
testEquality doubleTuple1 tuple2 

// The example displays the following output:
//       (12.3455) = (16.8912): False
//       (12.3455) = (12.3455): True
//       (12.3455) = (12.3455): False
//       (12.3455) = (James, 97.3): False

Module Example
    Sub Main()
        Dim doubleTuple1 = Tuple.Create(12.3455)

        Dim doubleTuple2 = Tuple.Create(16.8912)
        Dim doubleTuple3 = Tuple.Create(12.3455)
        Dim singleTuple1 = Tuple.Create(CSng(12.3455))
        Dim tuple2 = Tuple.Create("James", 97.3) 
        ' Compare first tuple with a Tuple(Of Double) with a different value.
        TestEquality(doubleTuple1, doubleTuple2)
        ' Compare first tuple with a Tuple(Of Double) with the same value.
        TestEquality(doubleTuple1, doubleTuple3)
        ' Compare first tuple with a Tuple(Of Single) with the same value.
        TestEquality(doubleTuple1, singleTuple1)
        ' Compare a 1-tuple with a 2-tuple.
        TestEquality(doubleTuple1, tuple2) 
    End Sub
    
   Private Sub TestEquality(tuple As Tuple(Of Double), obj As Object)
      Try
         Console.WriteLine("{0} = {1}: {2}", tuple.ToString(),
                                            obj.ToString,
                                            tuple.Equals(obj))
      
      Catch e As ArgumentException
         If obj.GetType.IsGenericType Then 
            If obj.GetType().Name = "Tuple`1" Then 
               Console.WriteLine("Cannot compare a Tuple(Of {0}) with a Tuple(Of {1}).", 
                              tuple.Item1.GetType().Name, obj.Item1.GetType().Name)
            Else
               Console.WriteLine("Cannot compare a {0} with a {1}.", tuple.GetType().Name, 
                                                                     obj.GetType().Name)
            End If
         Else
            Console.WriteLine("Cannot compare a {0} with a {1}.", tuple.GetType().Name,
                                                                  obj.GetType().Name)
         End If
      End Try
   End Sub
End Module
' The example displays the following output:
'       (12.3455) = (16.8912): False
'       (12.3455) = (12.3455): True
'       (12.3455) = (12.3455): False
'       (12.3455) = (James, 97.3): False

Keterangan

Parameter obj dianggap sama dengan instans saat ini dalam kondisi berikut:

• Ini adalah Tuple<T1> objek .

• Komponen tunggalnya memiliki jenis yang sama dengan instans saat ini.

• Komponen tunggalnya sama dengan instans saat ini. Kesetaraan ditentukan oleh perbandingan kesetaraan objek default untuk setiap komponen.