Int64.Equals Metoda

Definicja

Returns a value indicating whether this instance is equal to a specified object or Int64.Returns a value indicating whether this instance is equal to a specified object or Int64.

Przeciążenia

Equals(Int64)

Returns a value indicating whether this instance is equal to a specified Int64 value.Returns a value indicating whether this instance is equal to a specified Int64 value.

Equals(Object)

Zwraca wartość wskazującą, czy to wystąpienie jest równe podanemu obiektowi.Returns a value indicating whether this instance is equal to a specified object.

Equals(Int64)

Returns a value indicating whether this instance is equal to a specified Int64 value.Returns a value indicating whether this instance is equal to a specified Int64 value.

public:
 virtual bool Equals(long obj);
public bool Equals (long obj);
override this.Equals : int64 -> bool
Public Function Equals (obj As Long) As Boolean

Parametry

obj
Int64

An Int64 value to compare to this instance.An Int64 value to compare to this instance.

Zwraca

true if obj has the same value as this instance; otherwise, false.true if obj has the same value as this instance; otherwise, false.

Implementuje

Uwagi

This method implements the System.IEquatable<T> interface, and performs slightly better than Equals because it does not have to convert the obj parameter to an object.This method implements the System.IEquatable<T> interface, and performs slightly better than Equals because it does not have to convert the obj parameter to an object.

Uwagi dotyczące wywoływania

Compiler overload resolution may account for an apparent difference in the behavior of the two Equals(Int64) method overloads.Compiler overload resolution may account for an apparent difference in the behavior of the two Equals(Int64) method overloads. If an implicit conversion between the obj argument and an Int64 is defined and the argument is not typed as an Object, compilers perform an implicit conversion and call the Equals(Int64) method.If an implicit conversion between the obj argument and an Int64 is defined and the argument is not typed as an Object, compilers perform an implicit conversion and call the Equals(Int64) method. Otherwise, they call the Equals(Object) method, which always returns false if its obj argument is not an Int64 value.Otherwise, they call the Equals(Object) method, which always returns false if its obj argument is not an Int64 value. The following example illustrates the difference in behavior between the two method overloads.The following example illustrates the difference in behavior between the two method overloads. In the case of the Byte, SByte, Int16, UInt16, Int32, and UInt32 values, the first comparison returns true because the compiler automatically performs a widening conversion and calls the Equals(Int64) method, whereas the second comparison returns false because the compiler calls the Equals(Object) method.In the case of the Byte, SByte, Int16, UInt16, Int32, and UInt32 values, the first comparison returns true because the compiler automatically performs a widening conversion and calls the Equals(Int64) method, whereas the second comparison returns false because the compiler calls the Equals(Object) method.

[!code-csharpSystem.Int64.Equals#1] [!code-vbSystem.Int64.Equals#1][!code-csharpSystem.Int64.Equals#1] [!code-vbSystem.Int64.Equals#1]

Equals(Object)

Zwraca wartość wskazującą, czy to wystąpienie jest równe podanemu obiektowi.Returns a value indicating whether this instance is equal to a specified object.

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

Parametry

obj
Object

Obiekt, który ma zostać porównany z tym wystąpieniem.An object to compare with this instance.

Zwraca

true if obj is an instance of an Int64 and equals the value of this instance; otherwise, false.true if obj is an instance of an Int64 and equals the value of this instance; otherwise, false.

Przykłady

The following code example illustrates the use of Equals in the context of Int64, comparing two long values and returning true if they represent the same number, or false if they do not.The following code example illustrates the use of Equals in the context of Int64, comparing two long values and returning true if they represent the same number, or false if they do not.

Int64 myVariable1 = 80;
Int64 myVariable2 = 80;

// Get and display the declaring type.
Console::WriteLine( "\nType of 'myVariable1' is ' {0}' and  value is : {1}", myVariable1.GetType(), myVariable1 );
Console::WriteLine( "Type of 'myVariable2' is ' {0}' and  value is : {1}", myVariable2.GetType(), myVariable2 );

// Compare 'myVariable1' instance with 'myVariable2' Object.
if ( myVariable1.Equals( myVariable2 ) )
      Console::WriteLine( "\nStructures 'myVariable1' and 'myVariable2' are equal" );
else
      Console::WriteLine( "\nStructures 'myVariable1' and 'myVariable2' are not equal" );

   Int64 myVariable1 = 80;
   Int64 myVariable2 = 80;

   // Get and display the declaring type.
   Console.WriteLine("\nType of 'myVariable1' is '{0}' and"+
        " value is :{1}",myVariable1.GetType(), myVariable1); 
   Console.WriteLine("Type of 'myVariable2' is '{0}' and"+
        " value is :{1}",myVariable2.GetType(), myVariable2);

   // Compare 'myVariable1' instance with 'myVariable2' Object.
   if( myVariable1.Equals( myVariable2 ) )
      Console.WriteLine( "\nStructures 'myVariable1' and "+
            "'myVariable2' are equal");
   else
      Console.WriteLine( "\nStructures 'myVariable1' and "+
            "'myVariable2' are not equal");
   
Dim myVariable1 As Int64 = 80
Dim myVariable2 As Int64 = 80

' Get and display the declaring type.
Console.WriteLine(ControlChars.NewLine + "Type of 'myVariable1' is '{0}' and" +  _
            " value is :{1}", myVariable1.GetType().ToString(), myVariable1.ToString())
Console.WriteLine("Type of 'myVariable2' is '{0}' and" +  _
         " value is :{1}", myVariable2.GetType().ToString(), myVariable2.ToString())

' Compare 'myVariable1' instance with 'myVariable2' Object.
If myVariable1.Equals(myVariable2) Then
   Console.WriteLine(ControlChars.NewLine + "Structures 'myVariable1' and " + _
            "'myVariable2' are equal")
Else
   Console.WriteLine(ControlChars.NewLine + "Structures 'myVariable1' and " +  _
         "'myVariable2' are not equal")
End If

Uwagi dotyczące wywoływania

Compiler overload resolution may account for an apparent difference in the behavior of the two Equals(Int64) method overloads.Compiler overload resolution may account for an apparent difference in the behavior of the two Equals(Int64) method overloads. If an implicit conversion between the obj argument and an Int64 is defined and the argument is not typed as an Object, compilers perform an implicit conversion and call the Equals(Int64) method.If an implicit conversion between the obj argument and an Int64 is defined and the argument is not typed as an Object, compilers perform an implicit conversion and call the Equals(Int64) method. Otherwise, they call the Equals(Object) method, which always returns false if its obj argument is not an Int64 value.Otherwise, they call the Equals(Object) method, which always returns false if its obj argument is not an Int64 value. The following example illustrates the difference in behavior between the two method overloads.The following example illustrates the difference in behavior between the two method overloads. In the case of the Byte, SByte, Int16, UInt16, Int32, and UInt32 values, the first comparison returns true because the compiler automatically performs a widening conversion and calls the Equals(Int64) method, whereas the second comparison returns false because the compiler calls the Equals(Object) method.In the case of the Byte, SByte, Int16, UInt16, Int32, and UInt32 values, the first comparison returns true because the compiler automatically performs a widening conversion and calls the Equals(Int64) method, whereas the second comparison returns false because the compiler calls the Equals(Object) method.

[!code-csharpSystem.Int64.Equals#1] [!code-vbSystem.Int64.Equals#1][!code-csharpSystem.Int64.Equals#1] [!code-vbSystem.Int64.Equals#1]

Zobacz też

Dotyczy