Leggere in inglese

Condividi tramite


Tuple<T1,T2,T3,T4,T5,T6,T7,TRest>.Equals(Object) Metodo

Definizione

Restituisce un valore che indica se l'oggetto Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> corrente è uguale a un oggetto specificato.

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

Parametri

obj
Object

Oggetto da confrontare con questa istanza.

Restituisce

true se l'istanza corrente è uguale all'oggetto specificato; in caso contrario, false.

Esempio

Nell'esempio seguente vengono definiti cinque Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> oggetti contenenti numeri primi. Confronta quindi il primo oggetto con ognuno degli oggetti rimanenti. Come illustrato nell'output, solo il primo e l'ultimo Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> oggetto sono uguali, perché hanno un numero identico di componenti con valori identici.

using System;

public class Class1
{
   public static void Main()
   {
      // Create five 8-tuple objects containing prime numbers.
      var prime1 = new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple<Int32>> (2, 3, 5, 7, 11, 13, 17, 
                           new Tuple<Int32>(19));
      var prime2 = new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple<Int32>> (23, 29, 31, 37, 41, 43, 47, 
                           new Tuple<Int32>(55));
      var prime3 = new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple<Int32>> (3, 2, 5, 7, 11, 13, 17, 
                           new Tuple<Int32>(19)); 
      var prime4 = new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple<Int32, Int32>> (2, 3, 5, 7, 11, 13, 17, 
                           new Tuple<Int32, Int32>(19, 23));
      var prime5 = new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple<Int32>> (2, 3, 5, 7, 11, 13, 17, 
                           new Tuple<Int32>(19));
      Console.WriteLine("{0} = {1} : {2}", prime1, prime2, prime1.Equals(prime2));
      Console.WriteLine("{0} = {1} : {2}", prime1, prime3, prime1.Equals(prime3));
      Console.WriteLine("{0} = {1} : {2}", prime1, prime4, prime1.Equals(prime4));
      Console.WriteLine("{0} = {1} : {2}", prime1, prime5, prime1.Equals(prime5));
   }
}
// The example displays the following output:
//    (2, 3, 5, 7, 11, 13, 17, 19) = (23, 29, 31, 37, 41, 43, 47, 55) : False
//    (2, 3, 5, 7, 11, 13, 17, 19) = (3, 2, 5, 7, 11, 13, 17, 19) : False
//    (2, 3, 5, 7, 11, 13, 17, 19) = (2, 3, 5, 7, 11, 13, 17, 19, 23) : False
//    (2, 3, 5, 7, 11, 13, 17, 19) = (2, 3, 5, 7, 11, 13, 17, 19) : True
open System

// Create five 8-tuple objects containing prime numbers.
let prime1 = 
    new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
        Tuple<Int32>> (2, 3, 5, 7, 11, 13, 17, 
        new Tuple<Int32>(19))
let prime2 = 
    new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
        Tuple<Int32>> (23, 29, 31, 37, 41, 43, 47, 
        new Tuple<Int32>(55))
let prime3 = 
    new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
        Tuple<Int32>> (3, 2, 5, 7, 11, 13, 17, 
        new Tuple<Int32>(19)) 
let prime4 = 
    new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
        Tuple<Int32, Int32>> (2, 3, 5, 7, 11, 13, 17, 
        new Tuple<Int32, Int32>(19, 23))
let prime5 = 
    new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
        Tuple<Int32>> (2, 3, 5, 7, 11, 13, 17, 
        new Tuple<Int32>(19))
printfn $"{prime1} = {prime2} : {prime1.Equals prime2}"
printfn $"{prime1} = {prime3} : {prime1.Equals prime3}"
printfn $"{prime1} = {prime4} : {prime1.Equals prime4}"
printfn $"{prime1} = {prime5} : {prime1.Equals prime5}"
// The example displays the following output:
//    (2, 3, 5, 7, 11, 13, 17, 19) = (23, 29, 31, 37, 41, 43, 47, 55) : False
//    (2, 3, 5, 7, 11, 13, 17, 19) = (3, 2, 5, 7, 11, 13, 17, 19) : False
//    (2, 3, 5, 7, 11, 13, 17, 19) = (2, 3, 5, 7, 11, 13, 17, 19, 23) : False
//    (2, 3, 5, 7, 11, 13, 17, 19) = (2, 3, 5, 7, 11, 13, 17, 19) : True
Module Example
   Public Sub Main()
      ' Create five 8-tuple objects containing prime numbers.
      Dim prime1 = New Tuple(Of Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple(Of Int32)) (2, 3, 5, 7, 11, 13, 17, 
                           New Tuple(Of Int32)(19))
      Dim prime2 = New Tuple(Of Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple(Of Int32)) (23, 29, 31, 37, 41, 43, 47, 
                           New Tuple(Of Int32)(55)) 
      Dim prime3 = New Tuple(Of Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple(Of Int32)) (3, 2, 5, 7, 11, 13, 17, 
                           New Tuple(Of Int32)(19)) 
      Dim prime4 = New Tuple(Of Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple(Of Int32, Int32)) (2, 3, 5, 7, 11, 13, 17, 
                           New Tuple(Of Int32, Int32)(19, 23))
      Dim prime5 = New Tuple(Of Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple(Of Int32)) (2, 3, 5, 7, 11, 13, 17, 
                           New Tuple(Of Int32)(19))
      Console.WriteLine("{0} = {1} : {2}", prime1, prime2, prime1.Equals(prime2))
      Console.WriteLine("{0} = {1} : {2}", prime1, prime3, prime1.Equals(prime3))
      Console.WriteLine("{0} = {1} : {2}", prime1, prime4, prime1.Equals(prime4))
      Console.WriteLine("{0} = {1} : {2}", prime1, prime5, prime1.Equals(prime5))
   End Sub
End Module
' The example displays the following output:
'    (2, 3, 5, 7, 11, 13, 17, 19) = (23, 29, 31, 37, 41, 43, 47, 55) : False
'    (2, 3, 5, 7, 11, 13, 17, 19) = (3, 2, 5, 7, 11, 13, 17, 19) : False
'    (2, 3, 5, 7, 11, 13, 17, 19) = (2, 3, 5, 7, 11, 13, 17, 19, 23) : False
'    (2, 3, 5, 7, 11, 13, 17, 19) = (2, 3, 5, 7, 11, 13, 17, 19) : True

Commenti

Il obj parametro viene considerato uguale all'istanza corrente se soddisfa tutte le condizioni seguenti:

  • Si tratta di un Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> oggetto .

  • Ha lo stesso numero totale di componenti che sono degli stessi tipi dell'istanza corrente.

  • I componenti, compresi i relativi componenti annidati, sono uguali a quelli dell'istanza corrente. L'uguaglianza è determinata dall'operatore di uguaglianza predefinito per ogni componente.

Si applica a

Prodotto Versioni
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0