vector<bool>::reference::operator~

返回对负由元素引用的是相反的布尔值。

bool operator~( ) const;

返回值

向量元素的翻转的布尔值。

备注

向量对象不能由此运算符修改。

翻转 还反转向量元素的布尔值。

示例

// 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;
}

要求

标头: <vector>

命名空间: std

请参见

参考

vector<bool>::reference Class

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