Question

Is the declaration of the modify method in the Test class correct?

class Test {
private:
   mutable int mX;
public:
   void modify( const int iNewX ) const  {
      mX = iNewX;
   }
};

Cosmo · Accepted Answer

The definition is correct since the mutable modifier allows changing the value of a class field even in constant methods.

Cosmo · Accepted Answer

Yes, correct

Cosmo · Answer

No, since the method is declared const, however, it changes the state of the class

Cosmo · Answer

No, since the iNewX parameter is of type const int, however, it takes part in the assignment operator

Cosmo · Answer

No, since constant methods cannot return void

Cosmo · Answer

No, since the method is declared in the public section, however, it refers to the class field from the private section