Re: Referencing the container object

From:

"Alf P. Steinbach" <alfps@start.no>

Newsgroups:

comp.lang.c++

Date:

Wed, 04 Feb 2009 12:37:33 +0100

Message-ID:

<gmbulv$ikr$1@news.motzarella.org>

* Alessandro [AkiRoss] Re:

On Feb 4, 11:03 am, "Alf P. Steinbach" <al...@start.no> wrote:

Check out multiple inheritance. Make you "functors" base classes.

Meh, it requires to do something like this, or am I wrong?

struct Functor {
  Functor fun1;
  operator() //do something
};

struct Functor2 {
  Functor2 fun2;
  operator()
};

struct Container: public Functor, public Functor2 {} cont;

cont.fun1();
cont.fun2();

If you try to compile the above you'll see that there are errors both at the
syntax level and the semantics.

So it's unclear exactly what you mean. However, defining operator() in multiple
base classes is probably not helpful towards your earlier goal.

Please post only real code.

What if names collide? Container may be a

struct Container: public Parent {}

which (Parent) already have fun1(). How can I handle this?

How would you handle it for some other scheme?

Decide what the effect should be or whether it should be supported at all.

Techniques that may be relevant include virtual inheritance and
renaming-via-wrapper.

Cheers & hth.,

- Alf