Problem with passing vector of pointers to objects to member function of another object

Posted by Jamesz on Stack Overflow See other posts from Stack Overflow or by Jamesz
Published on 2010-04-15T13:42:26Z Indexed on 2010/04/15 13:43 UTC
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Hi,

I have a vector of pointers to Mouse objects called 'mice'. I'm passing the mice to the cat by reference.

vector <Mouse*> mice;
Cat * c;

c->lookForMouse(&mice);

And here's my lookForMouse() member function

void Cat::lookForMouse(vector <Mouse*> *mice)
{
  ...
}

And now to the problem! Within the function above, I can't seem to access my mice. This below will not work

mice[i]->isActive();

The error message I receive suggests to use mice[i].isActive(), but this throws an error saying isActive() is not a member of std::vector<_Ty> ...

This works though...

vector <Mouse*> miceCopy = *mice;
miceCopy[i]->isActive();

I understand that I shouldn't be creating another vector of mice here, it defeats the whole point of passing it by reference (let me know if I'm wrong)...

Why can't I do mice[i]->isActive() What should I be doing?

Thanks for your time and help :D

James.

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