overloading [] operator for pointers

[mdonati]

Hello to everyone.
I'm trying to overload array-access operator, but I'm not able to make it work with pointers to objects.

I made a simple example to expose the problem:

NumberSet.h

class NumberSet
{
   bitset<9> values;
   public:
   NumberSet(short startValue);
   char operator[](int index);
}

NumberSet.cpp

NumberSet::NumberSet(short startValue)
{
   values = startValue;
}

char NumberSet::operator[](int index)
{
   return values[index];
}

Example of usage with error: Cannot convert 'NumberSet' to char)

NumberSet* set = new NumberSet(25);
char anElement = set[0];

Example of usage without error

NumberSet set(25);
char anElement = set[0];

What I'm doing wrong?

[Galik]

When you use a pointer you need to dereference it:

NumberSet* set = new NumberSet(25);
char anElement = (*set)[0];

[mdonati]

It worked. Thanks for your reply.