Статья
11/17/2011

Tuple<T1, T2, T3, T4, T5, T6, T7, TRest>.Equals Method

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Returns a value that indicates whether the current Tuple<T1, T2, T3, T4, T5, T6, T7, TRest> object is equal to a specified object.

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

Syntax

'Declaration
Public Overrides Function Equals ( _
    obj As Object _
) As Boolean

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.

Remarks

The obj parameter is considered to be equal to the current instance if it meets all the following conditions:

It is a Tuple<T1, T2, T3, T4, T5, T6, T7, TRest> object.
It has the same total number of components that are of the same types as the current instance.
Its components (including its nested components) have the same values as those of the current instance.

Examples

The following example defines five Tuple<T1, T2, T3, T4, T5, T6, T7, TRest> objects that contain prime numbers. It then compares the first object with each of the remaining objects. As the output shows, only the first and the last Tuple<T1, T2, T3, T4, T5, T6, T7, TRest> objects are equal, because they have an identical number of components with identical values.

Module Example
   Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      ' 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))
      outputBlock.Text += String.Format("{0} = {1} : {2}", prime1, prime2, prime1.Equals(prime2)) & vbCrLf
      outputBlock.Text += String.Format("{0} = {1} : {2}", prime1, prime3, prime1.Equals(prime3)) & vbCrLf
      outputBlock.Text += String.Format("{0} = {1} : {2}", prime1, prime4, prime1.Equals(prime4)) & vbCrLf
      outputBlock.Text += String.Format("{0} = {1} : {2}", prime1, prime5, prime1.Equals(prime5)) & vbCrLf
   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

using System;

public class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      // 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));
      outputBlock.Text += String.Format("{0} = {1} : {2}", prime1, prime2, prime1.Equals(prime2)) + "\n";
      outputBlock.Text += String.Format("{0} = {1} : {2}", prime1, prime3, prime1.Equals(prime3)) + "\n";
      outputBlock.Text += String.Format("{0} = {1} : {2}", prime1, prime4, prime1.Equals(prime4)) + "\n";
      outputBlock.Text += String.Format("{0} = {1} : {2}", prime1, prime5, prime1.Equals(prime5)) + "\n";
   }
}
// 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

Version Information

Silverlight

Supported in: 5, 4

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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