vector<bool>::reference::operator~

Returns a Boolean value that is the opposite of that held by the element referenced.

bool operator~( ) const;

Return Value

The inverted Boolean value of the vector element.

Remarks

The vector object cannot be modified by this operator.

flip also inverts the Boolean value of a vector element.

Example

// vector_bool_ref_op_opp.cpp
// compile with: /EHsc
#include <vector>
#include <iostream> 

int main( ) 
{
   using namespace std;
   typedef vector<bool> boolvector;
   boolvector v;
   bool b1 , b2; 

   v.push_back( false );
   v.push_back( true );
   boolvector::reference ref1 = v.at( 0 );
   boolvector::reference ref2 = v.at( 1 ); 

   // There are two ways to invert the value:
   b1 = ref1.operator~( );
   b2 = ~ref2; 

   cout << "Value of inverted 1st element obtained is: " << b1 << endl;
   cout << "Value of 1st element in vector is still: " << ref1 << endl;
   cout << endl;
   cout << "Value of inverted 2nd element obtained is: " << b2 << endl;
   cout << "Value of 2nd element in vector is still: " << ref2 << endl;
   cout << endl;
}

Value of inverted 1st element obtained is: 1
Value of 1st element in vector is still: 0

Value of inverted 2nd element obtained is: 0
Value of 2nd element in vector is still: 1

Requirements

Header: <vector>

Namespace: std

See Also

Reference

vector<bool>::reference Class

Standard Template Library

Other Resources

vector<bool>::reference Members