Sdílet prostřednictvím


Tuple<T1,T2,T3,T4>.Equals(Object) Metoda

Definice

Vrátí hodnotu, která označuje, zda je aktuální Tuple<T1,T2,T3,T4> objekt roven zadanému objektu.

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

Parametry

obj
Object

Objekt k porovnání s touto instancí.

Návraty

Boolean

true pokud je aktuální instance rovna zadanému objektu; falsev opačném případě .

Příklady

Následující příklad definuje pole Tuple<T1,T2,T3,T4> objektů, které poskytují data o teplotě třikrát během určitého dne. Volá se Equals(Object) metoda pro porovnání každého Tuple<T1,T2,T3,T4> objektu s každým jiným Tuple<T1,T2,T3,T4> objektem. Výstup znázorňuje, že metoda vrací true pouze tehdy, Equals(Object) když všechny čtyři komponenty Tuple<T1,T2,T3,T4> objektů mají stejné hodnoty.

using System;

public class Class1
{
   public static void Main()
   {
      Tuple<DateTime, double, double, double>[] temperatures = 
            { Tuple.Create(new DateTime(2009, 1, 16), 3.0, 5.0, 4.0),
              Tuple.Create(new DateTime(2009, 4, 22), 9.0, 14.0, 11.0), 
              Tuple.Create(new DateTime(2009, 4, 22), 9.0, 14.0, 10.0),
              Tuple.Create(new DateTime(2009, 6, 1), 23.0, 28.0, 21.0),
              Tuple.Create(new DateTime(2009, 4, 22), 9.0, 14.0, 11.0),
              Tuple.Create(new DateTime(2009, 9, 6), 25.0, 30.0, 25.0) }; 
      // Compare each item with every other item for equality.
      for (int ctr = 0; ctr < temperatures.Length; ctr++)
      {
         var temperatureInfo = temperatures[ctr];
         for (int ctr2 = ctr + 1; ctr2 < temperatures.Length; ctr2++)
            Console.WriteLine("{0} = {1}: {2}", temperatureInfo, temperatures[ctr2], 
                                                temperatureInfo.Equals(temperatures[ctr2]));
         Console.WriteLine();
      }   
   }
}
// The example displays the following output:
//    (1/16/2009 12:00:00 AM, 3, 5, 4) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
//    (1/16/2009 12:00:00 AM, 3, 5, 4) = (4/22/2009 12:00:00 AM, 9, 14, 10): False
//    (1/16/2009 12:00:00 AM, 3, 5, 4) = (6/1/2009 12:00:00 AM, 23, 28, 21): False
//    (1/16/2009 12:00:00 AM, 3, 5, 4) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
//    (1/16/2009 12:00:00 AM, 3, 5, 4) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
//    
//    (4/22/2009 12:00:00 AM, 9, 14, 11) = (4/22/2009 12:00:00 AM, 9, 14, 10): False
//    (4/22/2009 12:00:00 AM, 9, 14, 11) = (6/1/2009 12:00:00 AM, 23, 28, 21): False
//    (4/22/2009 12:00:00 AM, 9, 14, 11) = (4/22/2009 12:00:00 AM, 9, 14, 11): True
//    (4/22/2009 12:00:00 AM, 9, 14, 11) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
//    
//    (4/22/2009 12:00:00 AM, 9, 14, 10) = (6/1/2009 12:00:00 AM, 23, 28, 21): False
//    (4/22/2009 12:00:00 AM, 9, 14, 10) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
//    (4/22/2009 12:00:00 AM, 9, 14, 10) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
//    
//    (6/1/2009 12:00:00 AM, 23, 28, 21) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
//    (6/1/2009 12:00:00 AM, 23, 28, 21) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
//    
//    (4/22/2009 12:00:00 AM, 9, 14, 11) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
open System

let temperatures = 
    [| Tuple.Create(DateTime(2009, 1, 16), 3.0, 5.0, 4.0)
       Tuple.Create(DateTime(2009, 4, 22), 9.0, 14.0, 11.0)
       Tuple.Create(DateTime(2009, 4, 22), 9.0, 14.0, 10.0)
       Tuple.Create(DateTime(2009, 6, 1), 23.0, 28.0, 21.0)
       Tuple.Create(DateTime(2009, 4, 22), 9.0, 14.0, 11.0)
       Tuple.Create(DateTime(2009, 9, 6), 25.0, 30.0, 25.0) |]

// Compare each item with every other item for equality.
for ctr = 0 to temperatures.Length - 1 do
    let temperatureInfo = temperatures[ctr]
    for ctr2 = ctr + 1 to temperatures.Length - 1 do
        printfn $"{temperatureInfo} = {temperatures[ctr2]}: {temperatureInfo.Equals temperatures[ctr2]}"
    printfn ""   
// The example displays the following output:
//    (1/16/2009 12:00:00 AM, 3, 5, 4) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
//    (1/16/2009 12:00:00 AM, 3, 5, 4) = (4/22/2009 12:00:00 AM, 9, 14, 10): False
//    (1/16/2009 12:00:00 AM, 3, 5, 4) = (6/1/2009 12:00:00 AM, 23, 28, 21): False
//    (1/16/2009 12:00:00 AM, 3, 5, 4) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
//    (1/16/2009 12:00:00 AM, 3, 5, 4) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
//    
//    (4/22/2009 12:00:00 AM, 9, 14, 11) = (4/22/2009 12:00:00 AM, 9, 14, 10): False
//    (4/22/2009 12:00:00 AM, 9, 14, 11) = (6/1/2009 12:00:00 AM, 23, 28, 21): False
//    (4/22/2009 12:00:00 AM, 9, 14, 11) = (4/22/2009 12:00:00 AM, 9, 14, 11): True
//    (4/22/2009 12:00:00 AM, 9, 14, 11) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
//    
//    (4/22/2009 12:00:00 AM, 9, 14, 10) = (6/1/2009 12:00:00 AM, 23, 28, 21): False
//    (4/22/2009 12:00:00 AM, 9, 14, 10) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
//    (4/22/2009 12:00:00 AM, 9, 14, 10) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
//    
//    (6/1/2009 12:00:00 AM, 23, 28, 21) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
//    (6/1/2009 12:00:00 AM, 23, 28, 21) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
//    
//    (4/22/2009 12:00:00 AM, 9, 14, 11) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
Module Example
   Public Sub Main()
      Dim temperatures() = 
              { Tuple.Create(#1/16/2009#, 3, 5, 4), _
                Tuple.Create(#4/22/2009#, 9, 14, 11), _ 
                Tuple.Create(#4/22/2009#, 9, 14, 10), _
                Tuple.Create(#6/01/2009#, 23, 28, 21), _
                Tuple.Create(#4/22/2009#, 9, 14, 11), _
                Tuple.Create(#9/06/2009#, 25, 30, 25) } 
      ' Compare each item with every other item for equality.
      For ctr As Integer = 0 To temperatures.Length - 1
         Dim temperatureInfo = temperatures(ctr)
         For ctr2 As Integer = ctr + 1 To temperatures.Length - 1
            Console.WriteLine("{0} = {1}: {2}", temperatureInfo, temperatures(ctr2), 
                                                temperatureInfo.Equals(temperatures(ctr2)))
         Next  
         Console.WriteLine()                                               
      Next
   End Sub
End Module
' The example displays the following output:
'    (1/16/2009 12:00:00 AM, 3, 5, 4) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
'    (1/16/2009 12:00:00 AM, 3, 5, 4) = (4/22/2009 12:00:00 AM, 9, 14, 10): False
'    (1/16/2009 12:00:00 AM, 3, 5, 4) = (6/1/2009 12:00:00 AM, 23, 28, 21): False
'    (1/16/2009 12:00:00 AM, 3, 5, 4) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
'    (1/16/2009 12:00:00 AM, 3, 5, 4) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
'    
'    (4/22/2009 12:00:00 AM, 9, 14, 11) = (4/22/2009 12:00:00 AM, 9, 14, 10): False
'    (4/22/2009 12:00:00 AM, 9, 14, 11) = (6/1/2009 12:00:00 AM, 23, 28, 21): False
'    (4/22/2009 12:00:00 AM, 9, 14, 11) = (4/22/2009 12:00:00 AM, 9, 14, 11): True
'    (4/22/2009 12:00:00 AM, 9, 14, 11) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
'    
'    (4/22/2009 12:00:00 AM, 9, 14, 10) = (6/1/2009 12:00:00 AM, 23, 28, 21): False
'    (4/22/2009 12:00:00 AM, 9, 14, 10) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
'    (4/22/2009 12:00:00 AM, 9, 14, 10) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
'    
'    (6/1/2009 12:00:00 AM, 23, 28, 21) = (4/22/2009 12:00:00 AM, 9, 14, 11): False
'    (6/1/2009 12:00:00 AM, 23, 28, 21) = (9/6/2009 12:00:00 AM, 25, 30, 25): False
'    
'    (4/22/2009 12:00:00 AM, 9, 14, 11) = (9/6/2009 12:00:00 AM, 25, 30, 25): False

Poznámky

Parametr obj se považuje za roven aktuální instanci za následujících podmínek:

  • Jedná se o Tuple<T1,T2,T3,T4> objekt.

  • Jeho čtyři komponenty jsou stejné typy jako aktuální instance.

  • Jeho čtyři komponenty jsou stejné jako součásti aktuální instance. Rovnost je určena výchozí porovnávací procedurou pro jednotlivé komponenty.

Platí pro