BitArray.Or(BitArray) Method

Definition

Namespace:

System.Collections

Assembly:

System.Collections.dll

Source:

BitArray.cs

Performs the bitwise OR operation between the elements of the current BitArray object and the corresponding elements in the specified array. The current BitArray object will be modified to store the result of the bitwise OR operation.

public:
 System::Collections::BitArray ^ Or(System::Collections::BitArray ^ value);

public System.Collections.BitArray Or (System.Collections.BitArray value);

member this.Or : System.Collections.BitArray -> System.Collections.BitArray

Public Function Or (value As BitArray) As BitArray

Parameters

value

BitArray

The array with which to perform the bitwise OR operation.

Returns

BitArray

An array containing the result of the bitwise OR operation, which is a reference to the current BitArray object.

Exceptions

ArgumentNullException

value is null.

ArgumentException

value and the current BitArray do not have the same number of elements.

Examples

The following code example shows how to perform the OR operation between two BitArray objects.

using namespace System;
using namespace System::Collections;
void PrintValues( IEnumerable^ myList, int myWidth );
int main()
{
   
   // Creates and initializes two BitArrays of the same size.
   BitArray^ myBA1 = gcnew BitArray( 4 );
   BitArray^ myBA2 = gcnew BitArray( 4 );
   myBA1[ 0 ] = false;
   myBA1[ 1 ] = false;
   myBA1[ 2 ] = true;
   myBA1[ 3 ] = true;
   myBA2[ 0 ] = false;
   myBA2[ 1 ] = true;
   myBA2[ 2 ] = false;
   myBA2[ 3 ] = true;
   
   // Performs a bitwise OR operation between BitArray instances of the same size.
   Console::WriteLine( "Initial values" );
   Console::Write( "myBA1:" );
   PrintValues( myBA1, 8 );
   Console::Write( "myBA2:" );
   PrintValues( myBA2, 8 );
   Console::WriteLine();
   Console::WriteLine( "Result" );
   Console::Write( "OR:" );
   PrintValues( myBA1->Or( myBA2 ), 8 );
   Console::WriteLine();
   Console::WriteLine( "After OR" );
   Console::Write( "myBA1:" );
   PrintValues( myBA1, 8 );
   Console::Write( "myBA2:" );
   PrintValues( myBA2, 8 );
   Console::WriteLine();
   
   // Performing OR between BitArray instances of different sizes returns an exception.
   try
   {
      BitArray^ myBA3 = gcnew BitArray( 8 );
      myBA3[ 0 ] = false;
      myBA3[ 1 ] = false;
      myBA3[ 2 ] = false;
      myBA3[ 3 ] = false;
      myBA3[ 4 ] = true;
      myBA3[ 5 ] = true;
      myBA3[ 6 ] = true;
      myBA3[ 7 ] = true;
      myBA1->Or( myBA3 );
   }
   catch ( Exception^ myException ) 
   {
      Console::WriteLine( "Exception: {0}", myException );
   }

}

void PrintValues( IEnumerable^ myList, int myWidth )
{
   int i = myWidth;
   IEnumerator^ myEnum = myList->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ obj = safe_cast<Object^>(myEnum->Current);
      if ( i <= 0 )
      {
         i = myWidth;
         Console::WriteLine();
      }

      i--;
      Console::Write( "{0,8}", obj );
   }

   Console::WriteLine();
}

/* 
 This code produces the following output.
 
 Initial values
 myBA1:   False   False    True    True
 myBA2:   False    True   False    True

 Result
 OR:   False    True    True    True

 After OR
 myBA1:   False    True    True    True
 myBA2:   False    True   False    True

 Exception: System.ArgumentException: Array lengths must be the same.
    at System.Collections.BitArray.Or(BitArray value)
    at SamplesBitArray.Main()
 */

using System;
using System.Collections;
public class SamplesBitArray  {

   public static void Main()  {

      // Creates and initializes two BitArrays of the same size.
      BitArray myBA1 = new BitArray( 4 );
      BitArray myBA2 = new BitArray( 4 );
      myBA1[0] = myBA1[1] = false;
      myBA1[2] = myBA1[3] = true;
      myBA2[0] = myBA2[2] = false;
      myBA2[1] = myBA2[3] = true;

      // Performs a bitwise OR operation between BitArray instances of the same size.
      Console.WriteLine( "Initial values" );
      Console.Write( "myBA1:" );
      PrintValues( myBA1, 8 );
      Console.Write( "myBA2:" );
      PrintValues( myBA2, 8 );
      Console.WriteLine();

      Console.WriteLine( "Result" );
      Console.Write( "OR:" );
      PrintValues( myBA1.Or( myBA2 ), 8 );
      Console.WriteLine();

      Console.WriteLine( "After OR" );
      Console.Write( "myBA1:" );
      PrintValues( myBA1, 8 );
      Console.Write( "myBA2:" );
      PrintValues( myBA2, 8 );
      Console.WriteLine();

      // Performing OR between BitArray instances of different sizes returns an exception.
      try  {
         BitArray myBA3 = new BitArray( 8 );
         myBA3[0] = myBA3[1] = myBA3[2] = myBA3[3] = false;
         myBA3[4] = myBA3[5] = myBA3[6] = myBA3[7] = true;
         myBA1.Or( myBA3 );
      } catch ( Exception myException )  {
         Console.WriteLine("Exception: " + myException.ToString());
      }
   }

   public static void PrintValues( IEnumerable myList, int myWidth )  {
      int i = myWidth;
      foreach ( Object obj in myList ) {
         if ( i <= 0 )  {
            i = myWidth;
            Console.WriteLine();
         }
         i--;
         Console.Write( "{0,8}", obj );
      }
      Console.WriteLine();
   }
}


/*
This code produces the following output.

Initial values
myBA1:   False   False    True    True
myBA2:   False    True   False    True

Result
OR:   False    True    True    True

After OR
myBA1:   False    True    True    True
myBA2:   False    True   False    True

Exception: System.ArgumentException: Array lengths must be the same.
   at System.Collections.BitArray.Or(BitArray value)
   at SamplesBitArray.Main()
*/

Imports System.Collections

Public Class SamplesBitArray    
    
    Public Shared Sub Main()
        
        ' Creates and initializes two BitArrays of the same size.
        Dim myBA1 As New BitArray(4)
        Dim myBA2 As New BitArray(4)
        myBA1(0) = False
        myBA1(1) = False
        myBA1(2) = True
        myBA1(3) = True
        myBA2(0) = False
        myBA2(2) = False
        myBA2(1) = True
        myBA2(3) = True
        
        ' Performs a bitwise OR operation between BitArray instances of the same size.
        Console.WriteLine("Initial values")
        Console.Write("myBA1:")
        PrintValues(myBA1, 8)
        Console.Write("myBA2:")
        PrintValues(myBA2, 8)
        Console.WriteLine()
        
        Console.WriteLine("Result")
        Console.Write("OR:")
        PrintValues(myBA1.Or(myBA2), 8)
        Console.WriteLine()
        
        Console.WriteLine("After OR")
        Console.Write("myBA1:")
        PrintValues(myBA1, 8)
        Console.Write("myBA2:")
        PrintValues(myBA2, 8)
        Console.WriteLine()
        
        ' Performing OR between BitArray instances of different sizes returns an exception.
        Try
            Dim myBA3 As New BitArray(8)
            myBA3(0) = False
            myBA3(1) = False
            myBA3(2) = False
            myBA3(3) = False
            myBA3(4) = True
            myBA3(5) = True
            myBA3(6) = True
            myBA3(7) = True
            myBA1.Or(myBA3)
        Catch myException As Exception
            Console.WriteLine("Exception: " + myException.ToString())
        End Try
    End Sub
    
    Public Shared Sub PrintValues(myList As IEnumerable, myWidth As Integer)
        Dim i As Integer = myWidth
        Dim obj As [Object]
        For Each obj In  myList
            If i <= 0 Then
                i = myWidth
                Console.WriteLine()
            End If
            i -= 1
            Console.Write("{0,8}", obj)
        Next obj
        Console.WriteLine()
    End Sub

End Class


' This code produces the following output.
' 
' Initial values
' myBA1:   False   False    True    True
' myBA2:   False    True   False    True
' 
' Result
' OR:   False    True    True    True
' 
' After OR
' myBA1:   False    True    True    True
' myBA2:   False    True   False    True
' 
' Exception: System.ArgumentException: Array lengths must be the same.
'    at System.Collections.BitArray.Or(BitArray value)
'    at SamplesBitArray.Main()

Remarks

The bitwise OR operation returns true if one or both operands are true, and returns false if both operands are false.

This method is an O(n) operation, where n is Count.