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Equals Method

Tuple<T1, T2, T3, T4, T5>.Equals Method

Returns a value that indicates whether the current Tuple<T1, T2, T3, T4, T5> object is equal to a specified object.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public override bool Equals(
	Object obj
)

Parameters

obj
Type: System.Object

The object to compare with this instance.

Return Value

Type: System.Boolean
true if the current instance is equal to the specified object; otherwise, false.

The obj parameter is considered to be equal to the current instance under the following conditions:

  • It is a Tuple<T1, T2, T3, T4, T5> object.

  • Its five components are of the same types as the current instance.

  • Its five components are equal to those of the current instance. Equality is determined by the default object equality comparer for each component.

The following example defines an array of 5-tuple objects that contain data about the temperatures of patients in two test groups. The first component of the array provides the number of the test group, and the second through fifth components provide the temperatures of a patient at hourly intervals. The Tuple<T1, T2, T3, T4, T5>.Equals(Object) method is called to compare every Tuple<T1, T2, T3, T4, T5> object with every other Tuple<T1, T2, T3, T4, T5> object. The output illustrates that the Equals method returns true only when all five components of the Tuple<T1, T2, T3, T4, T5> objects have equal values.

using System;

public class Class1
{
   public static void Main()
   {
      Tuple<int, double, double, double, double>[] temperatureInfos = 
                           { Tuple.Create(2, 97.9, 97.8, 98.0, 98.2),
                             Tuple.Create(1, 98.6, 98.8, 98.8, 99.0), 
                             Tuple.Create(2, 98.6, 98.6, 98.6, 98.4),
                             Tuple.Create(1, 98.4, 98.6, 99.0, 99.2),
                             Tuple.Create(2, 98.6, 98.6, 98.6, 98.4),
                             Tuple.Create(1, 98.6, 98.8, 98.8, 99.0) }; 
      // Compare each item with every other item for equality. 
      for (int ctr = 0; ctr < temperatureInfos.Length; ctr++)
      {
         var temperatureInfo = temperatureInfos[ctr];
         for (int ctr2 = ctr + 1; ctr2 < temperatureInfos.Length; ctr2++)
            Console.WriteLine("{0} = {1}: {2}", temperatureInfo, temperatureInfos[ctr2], 
                                                temperatureInfo.Equals(temperatureInfos[ctr2]));
         Console.WriteLine();
      }   
   }
}
// The example displays the following output: 
//    (2, 97.9, 97.8, 98, 98.2) = (1, 98.6, 98.8, 98.8, 99): False 
//    (2, 97.9, 97.8, 98, 98.2) = (2, 98.6, 98.6, 98.6, 98.4): False 
//    (2, 97.9, 97.8, 98, 98.2) = (1, 98.4, 98.6, 99, 99.2): False 
//    (2, 97.9, 97.8, 98, 98.2) = (2, 98.6, 98.6, 98.6, 98.4): False 
//    (2, 97.9, 97.8, 98, 98.2) = (1, 98.6, 98.8, 98.8, 99): False 
//     
//    (1, 98.6, 98.8, 98.8, 99) = (2, 98.6, 98.6, 98.6, 98.4): False 
//    (1, 98.6, 98.8, 98.8, 99) = (1, 98.4, 98.6, 99, 99.2): False 
//    (1, 98.6, 98.8, 98.8, 99) = (2, 98.6, 98.6, 98.6, 98.4): False 
//    (1, 98.6, 98.8, 98.8, 99) = (1, 98.6, 98.8, 98.8, 99): True 
//     
//    (2, 98.6, 98.6, 98.6, 98.4) = (1, 98.4, 98.6, 99, 99.2): False 
//    (2, 98.6, 98.6, 98.6, 98.4) = (2, 98.6, 98.6, 98.6, 98.4): True 
//    (2, 98.6, 98.6, 98.6, 98.4) = (1, 98.6, 98.8, 98.8, 99): False 
//     
//    (1, 98.4, 98.6, 99, 99.2) = (2, 98.6, 98.6, 98.6, 98.4): False 
//    (1, 98.4, 98.6, 99, 99.2) = (1, 98.6, 98.8, 98.8, 99): False 
//     
//    (2, 98.6, 98.6, 98.6, 98.4) = (1, 98.6, 98.8, 98.8, 99): False

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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